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Vascular surgery

Vascular surgery is a surgical subspecialty in which vascular diseases involving the arteries, veins, or lymphatic vessels, are managed by medical therapy, minimally-invasive catheter procedures and surgical reconstruction. The specialty evolved from general and cardiovascular surgery where it refined the management of just the vessels, no longer treating the heart or other organs. Modern vascular surgery includes open surgery techniques, endovascular (minimally invasive) techniques and medical management of vascular diseases - unlike the parent specialities. The vascular surgeon is trained in the diagnosis and management of diseases affecting all parts of the vascular system excluding the coronaries and intracranial vasculature. Vascular surgeons also are called to assist other physicians to carry out surgery near vessels, or to salvage vascular injuries that include hemorrhage control, dissection, occlusion or simply for safe exposure of vascular structures.[1]

Vascular surgery
Open infrarenal aortic repair model
ICD-9-CM38-39
MeSHD014656
OPS-301 code5-38...5-39
[edit on Wikidata]

History Edit

Early leaders of the field included Russian surgeon Nikolai Korotkov, noted for developing early surgical techniques, American interventional radiologist Charles Theodore Dotter who is credited with inventing minimally invasive angioplasty (1964), and Australian Robert Paton, who helped the field achieve recognition as a specialty. Edwin Wylie of San Francisco was one of the early American pioneers who developed and fostered advanced training in vascular surgery and pushed for its recognition as a specialty in the United States in the 1970s. The most notable historic figure in vascular surgery is the 1912 Nobel Prize winning surgeon, Alexis Carrel for his techniques used to suture vessels.

Evolution Edit

 
Medical science has advanced significantly since 1507, when Leonardo da Vinci drew this diagram of the internal organs and vascular systems of a woman.

The specialty continues to be based on operative arterial and venous surgery but since the early 1990s has evolved greatly. There is now considerable emphasis on minimally invasive alternatives to surgery. The field was originally pioneered by interventional radiologists like Dr. Charles Dotter, who invented angioplasty using serial dilatation of vessels.

The surgeon Dr. Thomas J. Fogarty invented a balloon catheter, designed to remove clots from occluded vessels, which was used as the eventual model to do endovascular angioplasty. Further development of the field has occurred via joint efforts between interventional radiology, vascular surgery, and interventional cardiology. This area of vascular surgery is called Endovascular Surgery or Interventional Vascular Radiology, a term that some in the specialty append to their primary qualification as Vascular Surgeon. Endovascular and endovenous procedures (e.g., EVAR) can now form the bulk of a vascular surgeon's practice.

The treatment of the aorta, the body's largest artery, dates back to Greek surgeon Antyllus, who first performed surgeries for various aneurysms in the second century AD. Modern treatment of aortic diseases stems from development and advancements from Michael DeBakey and Denton Cooley. In 1955, DeBakey and Cooley performed the first replacement of a thoracic aneurysm with a homograft. In 1958, they began using the Dacron graft, resulting in a revolution for surgeons in the repair of aortic aneurysms. He also was first to perform cardiopulmonary bypass to repair the ascending aorta, using antegrade perfusion of the brachiocephalic artery.

Dr. Ted Diethrich, one of Dr. DeBakey's associates, went on to pioneer many of the minimally invasive techniques that later became hallmarks of endovascular surgery.[2] Dietrich later founded the Arizona Heart Hospital in 1998 and served as its medical director from 1998 to 2010. In 2000, Diethrich performed the first endovascular aneurysm repair (EVAR) for ruptured abdominal aortic aneurysm. Dietrich trained several future leaders in the field of endovascular surgery at the Arizona Heart Hospital including Venkatesh Ramaiah, MD[3] who served as medical director of the institution following Dietrich's death in 2017.[4]

The development of endovascular surgery has been accompanied by a gradual separation of vascular surgery from its origin in general surgery. Most vascular surgeons would now confine their practice to vascular surgery and, similarly, general surgeons would not be trained or practise the larger vascular surgery operations or most endovascular procedures. More recently, professional vascular surgery societies and their training program have formally separated vascular surgery into a separate specialty with its own training program, meetings and accreditation. Notable societies are Society for Vascular Surgery (SVS), USA; Australia and New Zealand Society of Vascular Surgeons (ANZSVS). Local societies also exist (e.g., New South Wales Vascular and Melbourne Vascular Surgical Association (MVSA)). Larger societies of surgery actively separate and encourage specialty surgical societies under their umbrella (e.g., Royal Australasian College of Surgeons (RACS)).

Currently Edit

Arterial and venous disease treatment by angiography, stenting, and non-operative varicose vein treatment sclerotherapy, endovenous laser treatment have largely replaced major surgery in many first world countries. These procedures provide reasonable outcomes that are comparable to surgery with the advantage of short hospital stay (day or overnight for most cases) with lower morbidity and mortality rates. Historically performed by interventional radiologists, vascular surgeons have become increasingly proficient with endovascular methods.[5] The durability of endovascular arterial procedures is generally good, especially when viewed in the context of their common clinical usage i.e. arterial disease occurring in elderly patients and usually associated with concurrent significant patient comorbidities especially ischemic heart disease. The cost savings from shorter hospital stays and less morbidity are considerable but are somewhat balanced by the high cost of imaging equipment, construction and staffing of dedicated procedural suites, and of the implant devices themselves. The benefits for younger patients and in venous disease are less persuasive but there are strong trends towards nonoperative treatment options driven by patient preference, health insurance company costs, trial demonstrating comparable efficacy at least in the medium term.

A recent trend in the United States is the stand-alone day angiography facility associated with a private vascular surgery clinic, thus allowing treatment of most arterial endovascular cases conveniently and possibly with lesser overall community cost.[citation needed] Similar non-hospital treatment facilities for non-operative vein treatment have existed for some years and are now widespread in many countries.

NHS England conducted a review of all 70 vascular surgery sites across England in 2018 as part of its Getting It Right First Time programme. The review specified that vascular hubs should perform at least 60 abdominal aortic aneurysm procedures and 40 carotid endarterectomies a year. 12 trusts missed both targets and many more missed one of them. A programme of concentrating vascular surgery in fewer centres is proceeding.[6]

Vascular surgery encompasses surgery of the aorta, carotid arteries, and lower extremities, including the iliac, femoral, vascular trauma and tibial arteries. Vascular surgery also involves surgery of veins, for conditions such as May–Thurner syndrome and for varicose veins. In some regions, vascular surgery also includes dialysis access surgery and transplant surgery.

Management of arterial diseases Edit

 
Infrarenal aortic occlusion imaged with magnetic resonance angiography (MRA).

The management of arterial pathology excluding coronary and intracranial disease is within the scope of vascular surgeons. Disease states generally arise from narrowing of the arterial system known as stenosis or abnormal dilation referred to as an aneurysm. There are multiple mechanisms by which the arterial lumen can narrow, the most common of which is atherosclerosis.[7] Symptomatic stenosis may also result from a complication of arterial dissection. Other less common causes of stenosis include fibromuscular dysplasia, radiation induced fibrosis or cystic adventitial disease. Dilation of an artery which retains histologic layers is called an aneurysm. An aneurysms can be fusiform (concentric dilation), saccular (outpouching) or a combination of the two. Arterial dilation which does not contain three histologic layers is considered a pseudoaneurysm. Additionally, there are a number of congenital vascular anomalies which lead to symptomatic disease that are managed by the vascular surgeon, a few of which include aberrant subclavian artery, popliteal artery entrapment syndrome or persistent sciatic artery.[8] Vascular surgeons treat arterial diseases with a range of therapies including lifestyle modification, medications, endovascular therapy and surgery.

Aneurysms Edit

Aortic aneurysms Edit

 
The aorta is the largest artery in the body and the descending aorta has both a thoracic and an abdominal component. A thoracic aortic aneurysm is located in the chest, and an abdominal aortic aneurysm is located in the abdomen. Not pictured here are aneurysms which span both cavities and are referred to as thoracoabdominal aortic aneurysms.
Abdominal

An abdominal aortic aneurysm (AAA) refers to aneurysmal dilation of the aorta confined to the abdominal cavity. Most commonly, aneurysms are asymptomatic and located in the infrarenal position. Often, they are discovered incidentally or on screening exams in patients with risk factors such as a history of smoking. Patients with aneurysms which have a diameter less than 5 cm are at <1% rupture risk per year. When the aneurysm meets size criteria it can be treated with aortic replacement or EVAR.

Thoracic

Thoracic aortic aneurysms are contained in the chest. Aneurysms of the descending aorta can often be treated with thoracic endovascular aortic repair or TEVAR. Treating aneurysms which involve the ascending aorta are generally within the scope of cardiac surgeons, but upcoming endovascular technology may allow for a more minimally invasive approach in some patients.

Thoracoabdominal

Thoroacoabdominal aneurysms are those which span the chest and abdominal cavities. The Crawford classification was developed and describes five types of thoracoabdominal aneurysms.[9]

Other arterial aneurysms Edit

In addition to treating aneurysms which arise from the aorta, vascular surgeons also treat aneurysms elsewhere in the body.

Visceral artery

Visceral artery aneurysms include those isolated to the renal artery, splenic artery, celiac artery, and hepatic artery. Of these, data shows that splenic artery aneurysms are the most common.[10]

Indications for repair differ slightly between arteries. For instance, current guidelines recommend repair of renal and splenic artery aneurysms greater than 3 cm, and those of any size in women of childbearing age; whereas celiac and hepatic artery aneurysms are indicated for repair when their size is greater than 2 cm. This is in contrast to superior mesenteric artery aneurysms which should be repaired regardless of size when they are discovered.[11]

Popliteal artery

A popliteal artery aneurysm is an arterial aneurysm localized in the popliteal artery which courses behind the knee. Unlike aneurysms located in the abdomen, popliteal artery aneurysm rarely present with rupture but rather with symptoms of acute limb ischemia due to embolization of thrombus. Thus, when a patient presents with an asymptomatic popliteal aneurysm that is greater than 2 cm in diameter a vascular surgeon are able to offer vascular bypass or endovascular exclusion depending on several factors.[12]

Arterial dissections Edit

 
Early classification schemes of aortic dissection. Stanford type A are those which originate in the ascending aorta whereas Stanford type B originate distal to the left subclavian artery (descending aorta). The Debakey classification describes where the original tear is and the extent of the dissection.

The artery wall is composed of three concentric layers: the intima, media and adventitia. In general, an arterial dissection is a tear in the innermost layer of the arterial wall that makes a separation which allows blood to flow, and collect, between the layers. Arterial dissections include: an aortic dissection (aorta), a coronary artery dissection (coronary artery), two types of cervical artery dissection involving one of the arteries in the neck – a carotid artery dissection (carotid artery), and a vertebral artery dissection (vertebral artery), a pulmonary artery dissection is an extremely rare condition as a complication of chronic pulmonary hypertension.[13]

Whereas cardiac surgeons are usually in charge of managing type A dissections, type B dissections are typically managed by vascular surgeons. The most common risk factor for type B aortic dissection is hypertension. The first line treatment for type B aortic dissection is aimed at reducing both heart rate and blood pressure and is referred to as anti-impulse therapy.

 
A thoracic aortic stent graft, seen on chest X-ray which was placed during a TEVAR procedure.

Should initial medical management fail or there is the involvement of a major branch of the aorta, vascular surgery may be needed for these type B dissections. Treatment may include thoracic endovascular aortic repair (TEVAR) with or without extra-anatomic bypass such as carotid-carotid bypass, carotid-subclavian bypass, or subclavian-carotid transposition.[14]

Visceral artery dissection Edit

Visceral artery dissections are arterial dissections involving the superior mesenteric artery, celiac artery, renal arteries, hepatic artery and others. When they are an extension of an aortic dissection, this condition is managed simultaneously with aortic treatment. In isolation, visceral artery dissections are discovered incidentally in up to a third of patients and in these cases may be managed medically by a vascular surgeon. In cases where the dissection results in organ damage it is generally accepted by vascular surgeons that surgery is necessary. Surgical management strategies depend on the associated complications, surgical ability and patient preference.[15][16]

Mesenteric ischemia Edit

Mesenteric ischemia results from the acute or chronic obstruction of the superior mesenteric artery (SMA). The SMA arises from the abdominal aorta and usually supplies blood from the distal duodenum through two-thirds of the transverse colon and the pancreas.

Chronic mesenteric ischemia Edit

The symptoms of chronic mesenteric ischemia can be classified as abdominal angina[17] which is abdominal pain which occurs a fixed period of time after eating. Due to this, patient's may avoid eating, resulting in unintended weight loss. The first surgical treatment is thought to be performed by R.S. Shaw and described in the New England Journal of Medicine in 1958. The procedure Shaw described is referred to as mesenteric endarterectomy.[18] Since then, many advances in treatment have been made in minimally invasive, endovascular techniques including angioplasty and stenting.

Acute mesenteric ischemia Edit

Acute mesenteric ischemia (AMI) results from the sudden occlusion of the superior mesenteric artery.

Renovascular hypertension Edit

The renal arteries supply oxygenated blood to the kidneys. The kidneys serve to filter the flood and control blood pressure through the renin-angiotensin system. One cause of resistant hypertension is atherosclerotic disease in the renal arteries and is generally referred to as renovascular hypertension. If renovascular hypertension is diagnosed and maximal medical fails to control high blood pressure, the vascular surgeon may offer surgical treatment, either endovascular or open surgical reconstruction.

Cerebrovascular disease Edit

 
Carotid ultrasound.
 
Carotid endarterectomy.

Vascular surgeons are responsible for treating extracranial cerebrovascular disease as well as the interpretation of non-invasive vascular imaging relating to extracranial and intracranial circulation such as carotid ultrasonography and transcranial doppler. The most common of cerebrovascular conditions treated by vascular surgeons is carotid artery stenosis which is a narrowing of the carotid arteries and may be either clinically symptomatic or asymptomatic (silent). Carotid artery stenosis is caused by atherosclerosis whereby the buildup of atheromatous plaque inside the artery causes narrowing.

Symptoms of carotid artery stenosis can include transient ischemic attack or stroke. Both symptomatic and asymptomatic carotid stenosis can be diagnosed with the aid of carotid duplex ultrasound which allows for the estimation of severity of narrowing as well as characterize the plaque. Treatment can include medical therapy, carotid endarterectomy or carotid stenting.

The Society for Vascular Surgery publishes clinical practice guidelines for the management of extracranial cerebrovascular disease.[19] Less common diseases involving cerebral circulation treated by vascular surgeons include vertebrobasilar insufficiency, subclavian steal syndrome, carotid artery dissection, vertebral artery dissection, carotid body tumor and carotid artery aneurysm among others.

Peripheral artery disease Edit

Peripheral artery disease PAD is the abnormal narrowing of the arteries which supply the limbs. Patients with this condition can present with intermittent claudication which is pain mainly in the calves and thighs while walking. If there is progression, a patient may also present with chronic limb threatening ischemia which encompasses pain at rest and non-healing wounds. Vascular surgeons are experts in the diagnosis, medical management, endovascular and open surgical treatment of PAD.[20]

A vascular surgeon may diagnose PAD using a combination of history, physical exam and medical imaging. Medical imaging may include ankle-brachial index, doppler ultrasonography and computed tomography angiography, among others. Treatments are individualized and may include medical therapy, endovascular intervention or open surgical options including angioplasty, stenting, atherectomy, endarterectomy and vascular bypass, among others.

Management of venous diseases Edit

Chronic venous disease Edit

Chronic venous insufficiency is the abnormal pooling of blood in the lower extremity venous system which can lead to reticular veins, varicose veins, chronic edema and inflammation among other things. Population data suggests that chronic venous insufficiency affects up to 40% of females and 17% of males.[21] When chronic insufficiency leads to pain, swelling and skin changes it is referred to as chronic venous disease. Chronic venous insufficiency (CVI) is distinguished from post-thrombotic syndrome (PTS) in that CVI is primarily an issue of valvular incompetence of the superficial or deep veins whereas PTS may occur as a long-term complication of deep venous thrombosis.[22]

The vascular surgeon has several modalities to treat lower extremity venous disease which including medical, interventional and surgical procedures. For instance, venous ulceration may be treated with Unna's boots, superficial venous reflux with radiofrequency, laser ablation or vein stripping if indicated. When indicated, insufficiency in the deep veins may be treated with reconstruction of the venous valves with internal or external valvuloplasty.[23]

Varicose veins Edit

 
A medical illustration of lower extremity varicose veins.

Lower extremity varicose veins is the condition in which the superficial veins become tortuous(snakelike) and dilated (enlarged) to greater than 3mm in the upright position.[24] Incompetent or faulty valves are often present in these veins when investigated with duplex ultrasonography. Vascular treatments can include compression stockings, venous ablation or vein stripping, depending on specific patient presentation, severity of disease, among other things.

Nonthrombotic iliac vein lesions Edit

Nonthrombotic iliac vein lesions (NIVL) include May-Thurner Syndrome (MTS) whereby there is compression of the left iliac venous outflow usually by the right iliac artery leading to left leg discomfort, pain, swelling and varicose veins. NIVL encompasses compression of the iliac veins on either the right or left side.[25] Vascular surgeons may offer different treatment modalities depending on the patient presentation. Minimally invasive diagnostic and therapeutic options might include intravascular ultrasound, venography and iliac vein stenting whereas surgical management may be offered in refractory cases.[26] Surgical management strategies involve reconstruction or bypass of the affected segment such as cross-pubic venous bypass, also known as the Palma procedure.[27][28]

Deep vein thrombosis Edit

Deep vein thrombosis (DVT) is the formation of thrombus in a deep vein. DVT is more likely to occur in the lower extremity than the upper extremity or jugular vein. When a DVT involves the pelvic and lower extremity veins it can sometimes be classified as an iliofemoral DVT. Some evidence to suggests that performing an intervention in these cases may be beneficial whereas other evidence does not.[29] Overall, the data shows that there may be a reduction in the incidence in post-thrombotic syndrome in patients who undergo certain procedures for iliofemoral DVT but it is not without risks.[30] A vascular surgeon may offer venogram, endovascular suction or mechanical thrombectomy and in some cases pharmacomechanical thrombectomy.[citation needed] Some lower extremity DVT can be severe enough to cause a condition called phlegmasia cerulea dolens or phlegmasia alba dolens and can be limb-threatening events. When phlegmasia is present, intervention is often warranted and may include venous thrombectomy.

Post-thrombotic syndrome Edit

Post-thrombotic syndrome (PTS) is a medical condition that sometimes occurs as a long-term complication of DVT and is characterized by long term edema and skin changes following DVT. Presenting symptoms may include itchiness, pain, cramps and paresthesia. It is estimated that between 20% and 50% of patients will experience some degree of PTS.[31] A treatment strategy for PTS may involve the use of compression stockings.

Pulmonary embolism Edit

Surgical management of an acute pulmonary embolism (pulmonary thrombectomy) is uncommon and has largely been abandoned because of poor long-term outcomes. However, recently, it has gone through a resurgence with the revision of the surgical technique and is thought to benefit certain people.[32] Chronic pulmonary embolism leading to pulmonary hypertension (known as chronic thromboembolic hypertension) is treated with a surgical procedure known as a pulmonary thromboendarterectomy.[33]

Compressive venopathies Edit

Compression of large veins by adjacent structures or masses may lead to distinct clinical syndromes including May–Thurner syndrome (MTS), nutcracker syndrome and superior vena cava syndrome to name a few. Treatment modalities include venography, intravascular ultrasound and venous stenting as well as more invasive open venous reconstruction and bypass.

Management of hemodialysis access Edit

Patients with chronic kidney disease may have progression of disease which requires renal replacement therapy to filter their blood. One strategy for this therapy is hemodialysis, which is a procedure that involves filtering a patient's blood to remove waste products and returning their blood back to them. One method which avoids repeated arterial trauma is to create an arteriovenous fistula (AVF). The first procedure described for this purpose is named the Cimino fistula, after one of the surgeons who first had success with it. Vascular surgeons may create an AVF for a patient as well as undertake minimally invasive procedures to ensure the fistula remains patent.

Management of vascular trauma Edit

One way that vascular trauma may be understood is by categorizing vascular injury by three criteria: mechanism of injury, anatomical site of injury and contextual circumstances. Mechanism of injury refers to etiology, e.g. iatrogenic, blunt, penetrating, blast injury, etc. Anatomical site functionally refers to whether there is compressible versus non-compressible hemorrhage, while contextual circumstances refers to injuries sustained in the civilian or military realm. Each context can be further broken down: military into combatant vs. noncombatant and civil into urban vs rural trauma.[34] This categorization scheme is of both epidemiologic and clinical significance. For instance, arterial injury in military combatants currently occurs predominantly in males in their twenties who are exposed to improvised explosive devices or gunshot wounds; whereas in the civilian realm, one study conducted in the United States showed the most common mechanisms to include motor vehicle collisions, firearm injuries, stab wounds and falls from heights.[35]

Blunt thoracic aortic injury Edit

Advances in vascular surgery, specifically endovascular technologies, have led to a dramatic change in the operative approach to blunt thoracic aortic injury (BTAI). BTAI results from a high speed insult to the thorax such as a motor vehicle collision or a fall from a height. One widely-used classification scheme is based on the extent of injury to the anatomic layers of the aorta as seen with computed tomography angiography or intravascular ultrasound. Grade 1 BTAI are those which tear the aortic intima; grade 2 injuries refer to intramural hematoma; grade 3 injuries are pseudoaneurysm and are only contained by adventitial tissue; and grade 4 refer to free rupture of blood into the chest and surrounding tissue.[36] When indicated, first line intervention involves TEVAR.

Investigations Edit

Major trials Edit

Name Number of
patients
Description
Netherlands Vascular Study[37]
Multicentre Aneurysm Screening Study (MASS) Found reduced mortality after screening for abdominal aortic aneurysms in the UK.[38]
UK Small Aneurysm Trial 1090 AAA 4–5.5 cm; Immediate surgery vs. ultrasound surveillance (and treatment for rapid expansion or AAA >5.5); 30-day mortality after elective AAA repair is 5.8%. No difference in survival.[39]
ADAM VA Cooperative Group Trial 73451 Patients in VA screened with no known history of aneurysm; Age 50–79; AAA 4.0-5.4 cm; similar conclusion to UK Small Aneurysm Trial.[40]
Joint Vascular Research Group Trial 284 Studied the relationship between intraoperative intravenous heparinization, blood loss during surgery and thrombotic complications. Conclusion: Intraoperative heparin, given before aortic cross-clamping, is an important prophylactic against perioperative MI[clarification needed] in aortic aneurysm surgery.[41]
North American Symptomatic Carotid Endarterectomy Trial (NASCET) 1415 Showed carotid endarterectomy was beneficial in symptomatic patients. Two year stroke rate in patients with > 70% carotid stenosis decreased from 26% to 9%. Two year stroke rate in patients with > 50% decreased from 15% to 9%.[42][43]
Asymptomatic Carotid Atherosclerosis Study (ACAS) 1662 Demonstrated benefit in asymptomatic patients with >60% stenosis. Five year stroke rate reduced from 11% to 5.1% with carotid endarterectomy.[44][45]

Training Edit

Previously considered a field within general surgery, it is now considered a specialty in its own right. As a result, there are two pathways for training in the United States. Traditionally, a five-year general surgery residency is followed by a 1-2 year (typically 2 years) vascular surgery fellowship. An alternative path is to perform a five or six year vascular surgery residency. In many countries, Vascular surgeons can opt for additional training in cardiac surgery as well as post-residency.

Programs of training vary slightly between different regions of the world.

Country Standards bodies Professional representation Minimum length of training (post intern)
Australia and New Zealand Royal Australasian College of Surgeons Australian & New Zealand Society of Vascular Surgery (ANZSVS) 6 years
Canada Royal College of Surgeons of Canada Canadian Society for Vascular Surgery 5 years
Iran Iran National Board of Vascular Surgery Iranian College of Vascular Surgeons 7 years (4 years of general surgery + 3 years of vascular surgery)
Italy 5 years
United Kingdom Royal College of Surgeons of England
Royal College of Surgeons of Edinburgh
Vascular Society of Great Britain and Ireland 8 years
United States American Board of Surgery
American Osteopathic Board of Surgery
Society for Vascular Surgery
American College of Surgeons
5 years (4 via 5-year integrated Vascular Surgery Residency).
7 if completing as a 2-year fellowship following general surgery[46]

See also Edit

References Edit

  1. ^ Hemingway, Jake F.; Desikan, Sarasijhaa; Dasari, Mohini; Tran, Cuong; Hoffman, Rachel; Gobble, Alexandra; Spurlock, Aaron; Singh, Niten; Quiroga, Elina; Tran, Nam; Starnes, Benjamin W. (2021). "Intraoperative consultation of vascular surgeons is increasing at a major American trauma center". Journal of Vascular Surgery. 74 (5): 1581–1587. doi:10.1016/j.jvs.2021.04.065. PMID 34022381. S2CID 235126667.
  2. ^ Coselli, Joseph S.; Preventza, Ourania (2017-06-01). "In Memoriam: Edward B. Diethrich, MD (1935–2017)". Texas Heart Institute Journal. 44 (3): 164–166. doi:10.14503/THIJ-17-6354. ISSN 0730-2347. PMC 5505391.
  3. ^ Dr. Venkatesh Ramaiah: "Dr. Ted Diethrich lessons carried forward" - The Antegrade Flow Show, retrieved 2021-10-28
  4. ^ "Dr. Ted Diethrich, founder of Arizona Heart Institute, dies at 81". www.beckershospitalreview.com. Retrieved 2021-10-28.
  5. ^ Suckow BD, Goodney PP, Columbo JA, Kang R, Stone DH, Sedrakyan A, Cronenwett JL, Fillinger MF (Jun 2018). "National Trends in Open Surgical, Endovascular and Branched/Fenestrated Endovascular Aortic Aneurysm Repair in Medicare Patients". Journal of Vascular Surgery. 67 (6): 1690–1697.e1. doi:10.1016/j.jvs.2017.09.046. PMC 5970963. PMID 29290495. Retrieved 23 Sep 2020.
  6. ^ "Trusts reveal plans to centralise services after GIRFT review". Health Service Journal. 19 March 2018. Retrieved 13 May 2018.
  7. ^ Ho, Karen J (2023). Rutherford's Vascular Surgery and Endovascular Therapy. Chapter 4 - Atherosclerosis: Elsevier Health. pp. 41–50. ISBN 978-0-323-77557-1.{{cite book}}: CS1 maint: location (link)
  8. ^ Van Hooft, I. M.; Zeebregts, C. J.; Van Sterkenburg, S. M.; De Vries, W. R.; Reijnen, M. M. (2009). "The persistent sciatic artery". European Journal of Vascular and Endovascular Surgery. 37 (5): 585–591. doi:10.1016/j.ejvs.2009.01.014. PMID 19231248.
  9. ^ "Crawford classification". Retrieved 13 February 2023.
  10. ^ Kassem, M. M.; Gonzalez, L. (2022). "Splenic Artery Aneurysm". StatPearls. PMID 28613599.
  11. ^ Chaer, R. A.; Abularrage, C. J.; Coleman, D. M.; Eslami, M. H.; Kashyap, V. S.; Rockman, C.; Murad, M. H. (2020). "The Society for Vascular Surgery clinical practice guidelines on the management of visceral aneurysms". Journal of Vascular Surgery. 72 (1S): 3S–39S. doi:10.1016/j.jvs.2020.01.039. PMID 32201007. S2CID 214617284.
  12. ^ Farber, A.; Angle, N.; Avgerinos, E.; Dubois, L.; Eslami, M.; Geraghty, P.; Haurani, M.; Jim, J.; Ketteler, E.; Pulli, R.; Siracuse, J. J.; Murad, M. H. (2022). "The Society for Vascular Surgery clinical practice guidelines on popliteal artery aneurysms". Journal of Vascular Surgery. 75 (1S): 109S–120S. doi:10.1016/j.jvs.2021.04.040. PMID 34023430. S2CID 235170081.
  13. ^ Khattar, R. S.; Fox, D. J.; Alty, J. E.; Arora, A. (1 February 2005). "Pulmonary artery dissection: an emerging cardiovascular complication in surviving patients with chronic pulmonary hypertension". Heart. 91 (2): 142–145. doi:10.1136/hrt.2004.045799. PMID 15657218. S2CID 11516764. Retrieved 13 February 2023.
  14. ^ Lombardi, J. V.; Hughes, G. C.; Appoo, J. J.; Bavaria, J. E.; Beck, A. W.; Cambria, R. P.; Charlton-Ouw, K.; Eslami, M. H.; Kim, K. M.; Leshnower, B. G.; Maldonado, T.; Reece, T. B.; Wang, G. J. (2020). "Society for Vascular Surgery (SVS) and Society of Thoracic Surgeons (STS) reporting standards for type B aortic dissections". Journal of Vascular Surgery. 71 (3): 723–747. doi:10.1016/j.jvs.2019.11.013. PMID 32001058. S2CID 210984324.
  15. ^ Acosta, S.; Gonçalves, F. B. (2021). "Management of Spontaneous Isolated Mesenteric Artery Dissection: A Systematic Review". Scandinavian Journal of Surgery. 110 (2): 130–138. doi:10.1177/14574969211000546. PMC 8258720. PMID 33724090.
  16. ^ Gobble, Ryan M.; Brill, Eliott R.; Rockman, Caron B.; Hecht, Elizabeth M.; Lamparello, Patrick J.; Jacobowitz, Glenn R.; Maldonado, Thomas S. (2009). "Endovascular treatment of spontaneous dissections of the superior mesenteric artery". Journal of Vascular Surgery. 50 (6): 1326–1332. doi:10.1016/j.jvs.2009.07.019. PMID 19782510.
  17. ^ Goodman, G.H. (1918). "Angina Abdominus". The American Journal of the Medical Sciences. 155 (4): 524–528. doi:10.1097/00000441-191804000-00003. S2CID 72885362.
  18. ^ SHAW RS; MAYNARD EP 3rd (1958). "Acute and chronic thrombosis of the mesenteric arteries associated with malabsorption; a report of two cases successfully treated by thromboendarterectomy". The New England Journal of Medicine. 258 (18): 874–878. doi:10.1056/NEJM195805012581803. PMID 13541677.
  19. ^ Aburahma, A. F.; Avgerinos, E. D.; Chang, R. W.; Darling Rc, 3rd; Duncan, A. A.; Forbes, T. L.; Malas, M. B.; Murad, M. H.; Perler, B. A.; Powell, R. J.; Rockman, C. B.; Zhou, W. (2022). "Society for Vascular Surgery clinical practice guidelines for management of extracranial cerebrovascular disease". Journal of Vascular Surgery. 75 (1S): 4S–22S. doi:10.1016/j.jvs.2021.04.073. PMID 34153348. S2CID 235596620.
  20. ^ "Specialty at a Glance | Society for Vascular Surgery".
  21. ^ Patel, S. K.; Surowiec, S. M. (2022). "Venous Insufficiency". StatPearls. PMID 28613694.
  22. ^ Waheed, S. M.; Kudaravalli, P.; Hotwagner, D. T. (2022). "Deep Vein Thrombosis". StatPearls. PMID 29939530.
  23. ^ Dalsing, Michael C (2023). Rutherford's Vascular Surgery and Endovascular Therapy. Chapter 159 - Chronic Venous Insufficiency: Deep Vein Valve Reconstruction: Elsevier Health. pp. 2098–2111. ISBN 978-0-323-77557-1.{{cite book}}: CS1 maint: location (link)
  24. ^ Gloviczki, Peter (26 December 2008). Handbook of Venous Disorders: Guidelines of the American Venous Forum Third Edition. CRC Press. ISBN 978-0-340-93880-5.
  25. ^ Joh, M.; Desai, K. R. (2021). "Treatment of Nonthrombotic Iliac Vein Lesions". Seminars in Interventional Radiology. 38 (2): 155–159. doi:10.1055/s-0041-1727101. PMC 8175115. PMID 34108800.
  26. ^ Jayaraj, Arjun (2023). Rutherford's Vascular Surgery and Endovascular Therapy. Chapter 160- Iliocaval Venous Obstruction: Surgical Treatment: Elsevier Health. pp. 2132–2147. ISBN 978-0-323-77557-1.{{cite book}}: CS1 maint: location (link)
  27. ^ Alimi, Yves S Sr. (2023). Rutherford's Vascular Surgery and Endovascular Therapy. Chapter 161- Iliocaval Venous Obstruction: Endovascular Treatment: Elsevier Health. pp. 2112–2131. ISBN 978-0-323-77557-1.{{cite book}}: CS1 maint: location (link)
  28. ^ Power, Adam H.; Gloviczki, Peter (2014). "Left iliac vein occlusion treated with a Palma procedure". Journal of Vascular Surgery: Venous and Lymphatic Disorders. 2 (2): 204–205. doi:10.1016/j.jvsv.2012.10.053. PMID 26993190.
  29. ^ Stevens, S. M.; Woller, S. C.; Baumann Kreuziger, L.; Bounameaux, H.; Doerschug, K.; Geersing, G. J.; Huisman, M. V.; Kearon, C.; King, C. S.; Knighton, A. J.; Lake, E.; Murin, S.; Vintch JRE; Wells, P. S.; Moores, L. K. (2021). "Executive Summary: Antithrombotic Therapy for VTE Disease: Second Update of the Chest Guideline and Expert Panel Report". Chest. 160 (6): 2247–2259. doi:10.1016/j.chest.2021.07.056. PMID 34352279. S2CID 236933535.
  30. ^ Broderick, Cathryn; Watson, Lorna; Armon, Matthew P. (2021). "Thrombolytic strategies versus standard anticoagulation for acute deep vein thrombosis of the lower limb". Cochrane Database of Systematic Reviews. 2021 (1): CD002783. doi:10.1002/14651858.CD002783.pub5. PMC 8094969. PMID 33464575.
  31. ^ Azirar, Sara; Appelen, Diebrecht; Prins, Martin H.; Neumann, Martino HAM; De Feiter, Adriaan NP; Kolbach, Dinanda N. (2019). "Compression therapy for treating post-thrombotic syndrome". Cochrane Database of Systematic Reviews. 2019 (9): CD004177. doi:10.1002/14651858.CD004177.pub2. PMC 6749555. PMID 31531971.
  32. ^ Augustinos P, Ouriel K (August 2004). "Invasive approaches to treatment of venous thromboembolism". Circulation. 110 (9 Suppl 1): I27–34. doi:10.1161/01.CIR.0000140900.64198.f4. PMID 15339878.
  33. ^ Madani, Michael M. (2016). "50. Pulmonary Thromboendarterectomy". In Peacock, Andrew J.; Naeije, Robert; Rubin, Lewis J. (eds.). Pulmonary Circulation: Diseases and Their Treatment, Fourth Edition. CRC Press. p. 541. ISBN 978-1-4987-1991-9.
  34. ^ Gogalniceanu, Peter (2021). Rich's Vascular Trauma (4th ed.). Chapter 2 - Epidemiology of Vascular Trauma: Elsevier Medical. pp. 23–33. ISBN 978-0-323-69766-8.{{cite book}}: CS1 maint: location (link)
  35. ^ Barmparas, G.; Inaba, K.; Talving, P.; David, J. S.; Lam, L.; Plurad, D.; Green, D.; Demetriades, D. (2010). "Pediatric vs adult vascular trauma: A National Trauma Databank review". Journal of Pediatric Surgery. 45 (7): 1404–1412. doi:10.1016/j.jpedsurg.2009.09.017. PMID 20638516.
  36. ^ Arbabi, Cassra N (2023). Rutherford's Vascular Surgery and Endovascular Therapy (10th ed.). Chapter 181 - Thoracic Vascular Trauma: Elsevier Medical. pp. 2397–2410. ISBN 978-0-323-77559-5.{{cite book}}: CS1 maint: location (link)
  37. ^ Hooi JD; Kester AD; Stoffers HE; Overdijk MM; van Ree JW; Knottnerus JA (April 2001). "Incidence of and risk factors for asymptomatic peripheral arterial occlusive disease: a longitudinal study". Am J Epidemiol. 153 (7): 666–72. doi:10.1093/aje/153.7.666. PMID 11282794.
  38. ^ Ashton HA; Buxton MJ; Day NE; et al. (November 2002). "The Multicentre Aneurysm Screening Study (MASS) into the effect of abdominal aortic aneurysm screening on mortality in men: a randomised controlled trial". Lancet. 360 (9345): 1531–9. doi:10.1016/S0140-6736(02)11522-4. PMID 12443589. S2CID 21497118.
  39. ^ "Mortality results for randomised controlled trial of early elective surgery or ultrasonographic surveillance for small abdominal aortic aneurysms. The UK Small Aneurysm Trial Participants". Lancet. 352 (9141): 1649–55. November 1998. doi:10.1016/S0140-6736(98)10137-X. PMID 9853436. S2CID 24733279.
  40. ^ Lederle FA; Wilson SE; Johnson GR; et al. (August 1994). "Design of the abdominal aortic Aneurysm Detection and Management Study. ADAM VA Cooperative Study Group". J Vasc Surg. 20 (2): 296–303. doi:10.1016/0741-5214(94)90019-1. PMID 8040955.
  41. ^ Thompson JF; Mullee MA; Bell PR; et al. (July 1996). "Intraoperative heparinisation, blood loss and myocardial infarction during aortic aneurysm surgery: a Joint Vascular Research Group study". Eur J Vasc Endovasc Surg. 12 (1): 86–90. doi:10.1016/S1078-5884(96)80281-4. PMID 8696904.
  42. ^ Barnett, Henry J.M.; Taylor, D. Wayne; Eliasziw, Michael; Fox, Allan J.; Ferguson, Gary G.; Haynes, R. Brian; Rankin, Richard N.; Clagett, G. Patrick; Hachinski, Vladimir C.; Sackett, David L.; Thorpe, Kevin E. (1998-11-12). "Benefit of Carotid Endarterectomy in Patients with Symptomatic Moderate or Severe Stenosis". New England Journal of Medicine. 339 (20): 1415–1425. doi:10.1056/NEJM199811123392002. ISSN 0028-4793. PMID 9811916.
  43. ^ LLC, Peripheral Brain. "NASCET - Wiki Journal Club". www.wikijournalclub.org. Retrieved 2021-02-11.
  44. ^ "Table 1: The Single Nucleotide Polymorphisms in cathepsin B protein mined from literature (PMID: 16492714)". doi:10.7717/peerj.7425/table-1. {{cite journal}}: Cite journal requires |journal= (help)
  45. ^ "ACAS - Wiki Journal Club". www.wikijournalclub.org. Retrieved 2021-02-11.
  46. ^ VascularWeb: New Vascular Surgery Training Paradigms

External links Edit

  • Society for Vascular Surgery (U.S.)
  • European Society for Vascular Surgery

vascular, surgery, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, june, 20. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Vascular surgery news newspapers books scholar JSTOR June 2021 Learn how and when to remove this template message Vascular surgery is a surgical subspecialty in which vascular diseases involving the arteries veins or lymphatic vessels are managed by medical therapy minimally invasive catheter procedures and surgical reconstruction The specialty evolved from general and cardiovascular surgery where it refined the management of just the vessels no longer treating the heart or other organs Modern vascular surgery includes open surgery techniques endovascular minimally invasive techniques and medical management of vascular diseases unlike the parent specialities The vascular surgeon is trained in the diagnosis and management of diseases affecting all parts of the vascular system excluding the coronaries and intracranial vasculature Vascular surgeons also are called to assist other physicians to carry out surgery near vessels or to salvage vascular injuries that include hemorrhage control dissection occlusion or simply for safe exposure of vascular structures 1 Vascular surgeryOpen infrarenal aortic repair modelICD 9 CM38 39MeSHD014656OPS 301 code5 38 5 39 edit on Wikidata Contents 1 History 1 1 Evolution 1 2 Currently 2 Management of arterial diseases 2 1 Aneurysms 2 1 1 Aortic aneurysms 2 2 Other arterial aneurysms 2 3 Arterial dissections 3 Visceral artery dissection 4 Mesenteric ischemia 4 1 Chronic mesenteric ischemia 4 2 Acute mesenteric ischemia 5 Renovascular hypertension 6 Cerebrovascular disease 7 Peripheral artery disease 8 Management of venous diseases 8 1 Chronic venous disease 8 2 Varicose veins 8 3 Nonthrombotic iliac vein lesions 8 4 Deep vein thrombosis 8 5 Post thrombotic syndrome 8 6 Pulmonary embolism 9 Compressive venopathies 10 Management of hemodialysis access 11 Management of vascular trauma 12 Blunt thoracic aortic injury 13 Investigations 13 1 Major trials 14 Training 15 See also 16 References 17 External linksHistory EditEarly leaders of the field included Russian surgeon Nikolai Korotkov noted for developing early surgical techniques American interventional radiologist Charles Theodore Dotter who is credited with inventing minimally invasive angioplasty 1964 and Australian Robert Paton who helped the field achieve recognition as a specialty Edwin Wylie of San Francisco was one of the early American pioneers who developed and fostered advanced training in vascular surgery and pushed for its recognition as a specialty in the United States in the 1970s The most notable historic figure in vascular surgery is the 1912 Nobel Prize winning surgeon Alexis Carrel for his techniques used to suture vessels Evolution Edit nbsp Medical science has advanced significantly since 1507 when Leonardo da Vinci drew this diagram of the internal organs and vascular systems of a woman The specialty continues to be based on operative arterial and venous surgery but since the early 1990s has evolved greatly There is now considerable emphasis on minimally invasive alternatives to surgery The field was originally pioneered by interventional radiologists like Dr Charles Dotter who invented angioplasty using serial dilatation of vessels The surgeon Dr Thomas J Fogarty invented a balloon catheter designed to remove clots from occluded vessels which was used as the eventual model to do endovascular angioplasty Further development of the field has occurred via joint efforts between interventional radiology vascular surgery and interventional cardiology This area of vascular surgery is called Endovascular Surgery or Interventional Vascular Radiology a term that some in the specialty append to their primary qualification as Vascular Surgeon Endovascular and endovenous procedures e g EVAR can now form the bulk of a vascular surgeon s practice The treatment of the aorta the body s largest artery dates back to Greek surgeon Antyllus who first performed surgeries for various aneurysms in the second century AD Modern treatment of aortic diseases stems from development and advancements from Michael DeBakey and Denton Cooley In 1955 DeBakey and Cooley performed the first replacement of a thoracic aneurysm with a homograft In 1958 they began using the Dacron graft resulting in a revolution for surgeons in the repair of aortic aneurysms He also was first to perform cardiopulmonary bypass to repair the ascending aorta using antegrade perfusion of the brachiocephalic artery Dr Ted Diethrich one of Dr DeBakey s associates went on to pioneer many of the minimally invasive techniques that later became hallmarks of endovascular surgery 2 Dietrich later founded the Arizona Heart Hospital in 1998 and served as its medical director from 1998 to 2010 In 2000 Diethrich performed the first endovascular aneurysm repair EVAR for ruptured abdominal aortic aneurysm Dietrich trained several future leaders in the field of endovascular surgery at the Arizona Heart Hospital including Venkatesh Ramaiah MD 3 who served as medical director of the institution following Dietrich s death in 2017 4 The development of endovascular surgery has been accompanied by a gradual separation of vascular surgery from its origin in general surgery Most vascular surgeons would now confine their practice to vascular surgery and similarly general surgeons would not be trained or practise the larger vascular surgery operations or most endovascular procedures More recently professional vascular surgery societies and their training program have formally separated vascular surgery into a separate specialty with its own training program meetings and accreditation Notable societies are Society for Vascular Surgery SVS USA Australia and New Zealand Society of Vascular Surgeons ANZSVS Local societies also exist e g New South Wales Vascular and Melbourne Vascular Surgical Association MVSA Larger societies of surgery actively separate and encourage specialty surgical societies under their umbrella e g Royal Australasian College of Surgeons RACS Currently Edit Arterial and venous disease treatment by angiography stenting and non operative varicose vein treatment sclerotherapy endovenous laser treatment have largely replaced major surgery in many first world countries These procedures provide reasonable outcomes that are comparable to surgery with the advantage of short hospital stay day or overnight for most cases with lower morbidity and mortality rates Historically performed by interventional radiologists vascular surgeons have become increasingly proficient with endovascular methods 5 The durability of endovascular arterial procedures is generally good especially when viewed in the context of their common clinical usage i e arterial disease occurring in elderly patients and usually associated with concurrent significant patient comorbidities especially ischemic heart disease The cost savings from shorter hospital stays and less morbidity are considerable but are somewhat balanced by the high cost of imaging equipment construction and staffing of dedicated procedural suites and of the implant devices themselves The benefits for younger patients and in venous disease are less persuasive but there are strong trends towards nonoperative treatment options driven by patient preference health insurance company costs trial demonstrating comparable efficacy at least in the medium term A recent trend in the United States is the stand alone day angiography facility associated with a private vascular surgery clinic thus allowing treatment of most arterial endovascular cases conveniently and possibly with lesser overall community cost citation needed Similar non hospital treatment facilities for non operative vein treatment have existed for some years and are now widespread in many countries NHS England conducted a review of all 70 vascular surgery sites across England in 2018 as part of its Getting It Right First Time programme The review specified that vascular hubs should perform at least 60 abdominal aortic aneurysm procedures and 40 carotid endarterectomies a year 12 trusts missed both targets and many more missed one of them A programme of concentrating vascular surgery in fewer centres is proceeding 6 Vascular surgery encompasses surgery of the aorta carotid arteries and lower extremities including the iliac femoral vascular trauma and tibial arteries Vascular surgery also involves surgery of veins for conditions such as May Thurner syndrome and for varicose veins In some regions vascular surgery also includes dialysis access surgery and transplant surgery Management of arterial diseases Edit nbsp Infrarenal aortic occlusion imaged with magnetic resonance angiography MRA The management of arterial pathology excluding coronary and intracranial disease is within the scope of vascular surgeons Disease states generally arise from narrowing of the arterial system known as stenosis or abnormal dilation referred to as an aneurysm There are multiple mechanisms by which the arterial lumen can narrow the most common of which is atherosclerosis 7 Symptomatic stenosis may also result from a complication of arterial dissection Other less common causes of stenosis include fibromuscular dysplasia radiation induced fibrosis or cystic adventitial disease Dilation of an artery which retains histologic layers is called an aneurysm An aneurysms can be fusiform concentric dilation saccular outpouching or a combination of the two Arterial dilation which does not contain three histologic layers is considered a pseudoaneurysm Additionally there are a number of congenital vascular anomalies which lead to symptomatic disease that are managed by the vascular surgeon a few of which include aberrant subclavian artery popliteal artery entrapment syndrome or persistent sciatic artery 8 Vascular surgeons treat arterial diseases with a range of therapies including lifestyle modification medications endovascular therapy and surgery Aneurysms Edit Main articles Aortic Aneurysm and Open aortic surgery Aortic aneurysms Edit nbsp The aorta is the largest artery in the body and the descending aorta has both a thoracic and an abdominal component A thoracic aortic aneurysm is located in the chest and an abdominal aortic aneurysm is located in the abdomen Not pictured here are aneurysms which span both cavities and are referred to as thoracoabdominal aortic aneurysms AbdominalAn abdominal aortic aneurysm AAA refers to aneurysmal dilation of the aorta confined to the abdominal cavity Most commonly aneurysms are asymptomatic and located in the infrarenal position Often they are discovered incidentally or on screening exams in patients with risk factors such as a history of smoking Patients with aneurysms which have a diameter less than 5 cm are at lt 1 rupture risk per year When the aneurysm meets size criteria it can be treated with aortic replacement or EVAR ThoracicThoracic aortic aneurysms are contained in the chest Aneurysms of the descending aorta can often be treated with thoracic endovascular aortic repair or TEVAR Treating aneurysms which involve the ascending aorta are generally within the scope of cardiac surgeons but upcoming endovascular technology may allow for a more minimally invasive approach in some patients ThoracoabdominalThoroacoabdominal aneurysms are those which span the chest and abdominal cavities The Crawford classification was developed and describes five types of thoracoabdominal aneurysms 9 nbsp Abdominal aortic aneurysms can be classified as infrarenal juxtarenal pararenal or suprarenal as depicted in the illustration nbsp The Crawford Classification Extent I IV and the Safi modification Extent V for thoracoabdominal aortic aneurysms is pictured above Other arterial aneurysms Edit In addition to treating aneurysms which arise from the aorta vascular surgeons also treat aneurysms elsewhere in the body Visceral arteryVisceral artery aneurysms include those isolated to the renal artery splenic artery celiac artery and hepatic artery Of these data shows that splenic artery aneurysms are the most common 10 Indications for repair differ slightly between arteries For instance current guidelines recommend repair of renal and splenic artery aneurysms greater than 3 cm and those of any size in women of childbearing age whereas celiac and hepatic artery aneurysms are indicated for repair when their size is greater than 2 cm This is in contrast to superior mesenteric artery aneurysms which should be repaired regardless of size when they are discovered 11 Popliteal arteryA popliteal artery aneurysm is an arterial aneurysm localized in the popliteal artery which courses behind the knee Unlike aneurysms located in the abdomen popliteal artery aneurysm rarely present with rupture but rather with symptoms of acute limb ischemia due to embolization of thrombus Thus when a patient presents with an asymptomatic popliteal aneurysm that is greater than 2 cm in diameter a vascular surgeon are able to offer vascular bypass or endovascular exclusion depending on several factors 12 Arterial dissections Edit Main articles Aortic dissection Surgery and Arterial dissections nbsp Early classification schemes of aortic dissection Stanford type A are those which originate in the ascending aorta whereas Stanford type B originate distal to the left subclavian artery descending aorta The Debakey classification describes where the original tear is and the extent of the dissection The artery wall is composed of three concentric layers the intima media and adventitia In general an arterial dissection is a tear in the innermost layer of the arterial wall that makes a separation which allows blood to flow and collect between the layers Arterial dissections include an aortic dissection aorta a coronary artery dissection coronary artery two types of cervical artery dissection involving one of the arteries in the neck a carotid artery dissection carotid artery and a vertebral artery dissection vertebral artery a pulmonary artery dissection is an extremely rare condition as a complication of chronic pulmonary hypertension 13 Whereas cardiac surgeons are usually in charge of managing type A dissections type B dissections are typically managed by vascular surgeons The most common risk factor for type B aortic dissection is hypertension The first line treatment for type B aortic dissection is aimed at reducing both heart rate and blood pressure and is referred to as anti impulse therapy nbsp A thoracic aortic stent graft seen on chest X ray which was placed during a TEVAR procedure Should initial medical management fail or there is the involvement of a major branch of the aorta vascular surgery may be needed for these type B dissections Treatment may include thoracic endovascular aortic repair TEVAR with or without extra anatomic bypass such as carotid carotid bypass carotid subclavian bypass or subclavian carotid transposition 14 Visceral artery dissection EditVisceral artery dissections are arterial dissections involving the superior mesenteric artery celiac artery renal arteries hepatic artery and others When they are an extension of an aortic dissection this condition is managed simultaneously with aortic treatment In isolation visceral artery dissections are discovered incidentally in up to a third of patients and in these cases may be managed medically by a vascular surgeon In cases where the dissection results in organ damage it is generally accepted by vascular surgeons that surgery is necessary Surgical management strategies depend on the associated complications surgical ability and patient preference 15 16 Mesenteric ischemia EditMesenteric ischemia results from the acute or chronic obstruction of the superior mesenteric artery SMA The SMA arises from the abdominal aorta and usually supplies blood from the distal duodenum through two thirds of the transverse colon and the pancreas Chronic mesenteric ischemia Edit The symptoms of chronic mesenteric ischemia can be classified as abdominal angina 17 which is abdominal pain which occurs a fixed period of time after eating Due to this patient s may avoid eating resulting in unintended weight loss The first surgical treatment is thought to be performed by R S Shaw and described in the New England Journal of Medicine in 1958 The procedure Shaw described is referred to as mesenteric endarterectomy 18 Since then many advances in treatment have been made in minimally invasive endovascular techniques including angioplasty and stenting Acute mesenteric ischemia Edit Acute mesenteric ischemia AMI results from the sudden occlusion of the superior mesenteric artery Renovascular hypertension EditThe renal arteries supply oxygenated blood to the kidneys The kidneys serve to filter the flood and control blood pressure through the renin angiotensin system One cause of resistant hypertension is atherosclerotic disease in the renal arteries and is generally referred to as renovascular hypertension If renovascular hypertension is diagnosed and maximal medical fails to control high blood pressure the vascular surgeon may offer surgical treatment either endovascular or open surgical reconstruction Cerebrovascular disease Edit nbsp Carotid ultrasound nbsp Carotid endarterectomy Vascular surgeons are responsible for treating extracranial cerebrovascular disease as well as the interpretation of non invasive vascular imaging relating to extracranial and intracranial circulation such as carotid ultrasonography and transcranial doppler The most common of cerebrovascular conditions treated by vascular surgeons is carotid artery stenosis which is a narrowing of the carotid arteries and may be either clinically symptomatic or asymptomatic silent Carotid artery stenosis is caused by atherosclerosis whereby the buildup of atheromatous plaque inside the artery causes narrowing Symptoms of carotid artery stenosis can include transient ischemic attack or stroke Both symptomatic and asymptomatic carotid stenosis can be diagnosed with the aid of carotid duplex ultrasound which allows for the estimation of severity of narrowing as well as characterize the plaque Treatment can include medical therapy carotid endarterectomy or carotid stenting The Society for Vascular Surgery publishes clinical practice guidelines for the management of extracranial cerebrovascular disease 19 Less common diseases involving cerebral circulation treated by vascular surgeons include vertebrobasilar insufficiency subclavian steal syndrome carotid artery dissection vertebral artery dissection carotid body tumor and carotid artery aneurysm among others Peripheral artery disease EditPeripheral artery disease PAD is the abnormal narrowing of the arteries which supply the limbs Patients with this condition can present with intermittent claudication which is pain mainly in the calves and thighs while walking If there is progression a patient may also present with chronic limb threatening ischemia which encompasses pain at rest and non healing wounds Vascular surgeons are experts in the diagnosis medical management endovascular and open surgical treatment of PAD 20 A vascular surgeon may diagnose PAD using a combination of history physical exam and medical imaging Medical imaging may include ankle brachial index doppler ultrasonography and computed tomography angiography among others Treatments are individualized and may include medical therapy endovascular intervention or open surgical options including angioplasty stenting atherectomy endarterectomy and vascular bypass among others nbsp Illustration of atherosclerosis causing arterial obstruction which clinically presents at peripheral artery disease nbsp ABI testing is used by vascular surgeons in the diagnosis of PAD The blood pressure in the arm and leg are compared as a ratio nbsp Angioplasty pictured and stenting are two endovascular treatments employed by the vascular surgeon Management of venous diseases EditChronic venous disease Edit Chronic venous insufficiency is the abnormal pooling of blood in the lower extremity venous system which can lead to reticular veins varicose veins chronic edema and inflammation among other things Population data suggests that chronic venous insufficiency affects up to 40 of females and 17 of males 21 When chronic insufficiency leads to pain swelling and skin changes it is referred to as chronic venous disease Chronic venous insufficiency CVI is distinguished from post thrombotic syndrome PTS in that CVI is primarily an issue of valvular incompetence of the superficial or deep veins whereas PTS may occur as a long term complication of deep venous thrombosis 22 The vascular surgeon has several modalities to treat lower extremity venous disease which including medical interventional and surgical procedures For instance venous ulceration may be treated with Unna s boots superficial venous reflux with radiofrequency laser ablation or vein stripping if indicated When indicated insufficiency in the deep veins may be treated with reconstruction of the venous valves with internal or external valvuloplasty 23 Varicose veins Edit nbsp A medical illustration of lower extremity varicose veins Lower extremity varicose veins is the condition in which the superficial veins become tortuous snakelike and dilated enlarged to greater than 3mm in the upright position 24 Incompetent or faulty valves are often present in these veins when investigated with duplex ultrasonography Vascular treatments can include compression stockings venous ablation or vein stripping depending on specific patient presentation severity of disease among other things Nonthrombotic iliac vein lesions Edit Nonthrombotic iliac vein lesions NIVL include May Thurner Syndrome MTS whereby there is compression of the left iliac venous outflow usually by the right iliac artery leading to left leg discomfort pain swelling and varicose veins NIVL encompasses compression of the iliac veins on either the right or left side 25 Vascular surgeons may offer different treatment modalities depending on the patient presentation Minimally invasive diagnostic and therapeutic options might include intravascular ultrasound venography and iliac vein stenting whereas surgical management may be offered in refractory cases 26 Surgical management strategies involve reconstruction or bypass of the affected segment such as cross pubic venous bypass also known as the Palma procedure 27 28 Deep vein thrombosis Edit Deep vein thrombosis DVT is the formation of thrombus in a deep vein DVT is more likely to occur in the lower extremity than the upper extremity or jugular vein When a DVT involves the pelvic and lower extremity veins it can sometimes be classified as an iliofemoral DVT Some evidence to suggests that performing an intervention in these cases may be beneficial whereas other evidence does not 29 Overall the data shows that there may be a reduction in the incidence in post thrombotic syndrome in patients who undergo certain procedures for iliofemoral DVT but it is not without risks 30 A vascular surgeon may offer venogram endovascular suction or mechanical thrombectomy and in some cases pharmacomechanical thrombectomy citation needed Some lower extremity DVT can be severe enough to cause a condition called phlegmasia cerulea dolens or phlegmasia alba dolens and can be limb threatening events When phlegmasia is present intervention is often warranted and may include venous thrombectomy Post thrombotic syndrome Edit Post thrombotic syndrome PTS is a medical condition that sometimes occurs as a long term complication of DVT and is characterized by long term edema and skin changes following DVT Presenting symptoms may include itchiness pain cramps and paresthesia It is estimated that between 20 and 50 of patients will experience some degree of PTS 31 A treatment strategy for PTS may involve the use of compression stockings Pulmonary embolism Edit Surgical management of an acute pulmonary embolism pulmonary thrombectomy is uncommon and has largely been abandoned because of poor long term outcomes However recently it has gone through a resurgence with the revision of the surgical technique and is thought to benefit certain people 32 Chronic pulmonary embolism leading to pulmonary hypertension known as chronic thromboembolic hypertension is treated with a surgical procedure known as a pulmonary thromboendarterectomy 33 Compressive venopathies EditCompression of large veins by adjacent structures or masses may lead to distinct clinical syndromes including May Thurner syndrome MTS nutcracker syndrome and superior vena cava syndrome to name a few Treatment modalities include venography intravascular ultrasound and venous stenting as well as more invasive open venous reconstruction and bypass Management of hemodialysis access EditPatients with chronic kidney disease may have progression of disease which requires renal replacement therapy to filter their blood One strategy for this therapy is hemodialysis which is a procedure that involves filtering a patient s blood to remove waste products and returning their blood back to them One method which avoids repeated arterial trauma is to create an arteriovenous fistula AVF The first procedure described for this purpose is named the Cimino fistula after one of the surgeons who first had success with it Vascular surgeons may create an AVF for a patient as well as undertake minimally invasive procedures to ensure the fistula remains patent Management of vascular trauma EditOne way that vascular trauma may be understood is by categorizing vascular injury by three criteria mechanism of injury anatomical site of injury and contextual circumstances Mechanism of injury refers to etiology e g iatrogenic blunt penetrating blast injury etc Anatomical site functionally refers to whether there is compressible versus non compressible hemorrhage while contextual circumstances refers to injuries sustained in the civilian or military realm Each context can be further broken down military into combatant vs noncombatant and civil into urban vs rural trauma 34 This categorization scheme is of both epidemiologic and clinical significance For instance arterial injury in military combatants currently occurs predominantly in males in their twenties who are exposed to improvised explosive devices or gunshot wounds whereas in the civilian realm one study conducted in the United States showed the most common mechanisms to include motor vehicle collisions firearm injuries stab wounds and falls from heights 35 Blunt thoracic aortic injury EditAdvances in vascular surgery specifically endovascular technologies have led to a dramatic change in the operative approach to blunt thoracic aortic injury BTAI BTAI results from a high speed insult to the thorax such as a motor vehicle collision or a fall from a height One widely used classification scheme is based on the extent of injury to the anatomic layers of the aorta as seen with computed tomography angiography or intravascular ultrasound Grade 1 BTAI are those which tear the aortic intima grade 2 injuries refer to intramural hematoma grade 3 injuries are pseudoaneurysm and are only contained by adventitial tissue and grade 4 refer to free rupture of blood into the chest and surrounding tissue 36 When indicated first line intervention involves TEVAR Investigations EditMajor trials Edit Name Number ofpatients DescriptionNetherlands Vascular Study 37 Multicentre Aneurysm Screening Study MASS Found reduced mortality after screening for abdominal aortic aneurysms in the UK 38 UK Small Aneurysm Trial 1090 AAA 4 5 5 cm Immediate surgery vs ultrasound surveillance and treatment for rapid expansion or AAA gt 5 5 30 day mortality after elective AAA repair is 5 8 No difference in survival 39 ADAM VA Cooperative Group Trial 73451 Patients in VA screened with no known history of aneurysm Age 50 79 AAA 4 0 5 4 cm similar conclusion to UK Small Aneurysm Trial 40 Joint Vascular Research Group Trial 284 Studied the relationship between intraoperative intravenous heparinization blood loss during surgery and thrombotic complications Conclusion Intraoperative heparin given before aortic cross clamping is an important prophylactic against perioperative MI clarification needed in aortic aneurysm surgery 41 North American Symptomatic Carotid Endarterectomy Trial NASCET 1415 Showed carotid endarterectomy was beneficial in symptomatic patients Two year stroke rate in patients with gt 70 carotid stenosis decreased from 26 to 9 Two year stroke rate in patients with gt 50 decreased from 15 to 9 42 43 Asymptomatic Carotid Atherosclerosis Study ACAS 1662 Demonstrated benefit in asymptomatic patients with gt 60 stenosis Five year stroke rate reduced from 11 to 5 1 with carotid endarterectomy 44 45 Training EditPreviously considered a field within general surgery it is now considered a specialty in its own right As a result there are two pathways for training in the United States Traditionally a five year general surgery residency is followed by a 1 2 year typically 2 years vascular surgery fellowship An alternative path is to perform a five or six year vascular surgery residency In many countries Vascular surgeons can opt for additional training in cardiac surgery as well as post residency Programs of training vary slightly between different regions of the world Country Standards bodies Professional representation Minimum length of training post intern Australia and New Zealand Royal Australasian College of Surgeons Australian amp New Zealand Society of Vascular Surgery ANZSVS 6 yearsCanada Royal College of Surgeons of Canada Canadian Society for Vascular Surgery 5 yearsIran Iran National Board of Vascular Surgery Iranian College of Vascular Surgeons 7 years 4 years of general surgery 3 years of vascular surgery Italy 5 yearsUnited Kingdom Royal College of Surgeons of EnglandRoyal College of Surgeons of Edinburgh Vascular Society of Great Britain and Ireland 8 yearsUnited States American Board of SurgeryAmerican Osteopathic Board of Surgery Society for Vascular SurgeryAmerican College of Surgeons 5 years 4 via 5 year integrated Vascular Surgery Residency 7 if completing as a 2 year fellowship following general surgery 46 See also EditSociety for Vascular Surgery the major American professional society Ischemia reperfusion injury of the appendicular musculoskeletal system Kakish Ryskulova Vein Phlebologist Cardiovascular disease CardiologyReferences Edit Hemingway Jake F Desikan Sarasijhaa Dasari Mohini Tran Cuong Hoffman Rachel Gobble Alexandra Spurlock Aaron Singh Niten Quiroga Elina Tran Nam Starnes Benjamin W 2021 Intraoperative consultation of vascular surgeons is increasing at a major American trauma center Journal of Vascular Surgery 74 5 1581 1587 doi 10 1016 j jvs 2021 04 065 PMID 34022381 S2CID 235126667 Coselli Joseph S Preventza Ourania 2017 06 01 In Memoriam Edward B Diethrich MD 1935 2017 Texas Heart Institute Journal 44 3 164 166 doi 10 14503 THIJ 17 6354 ISSN 0730 2347 PMC 5505391 Dr Venkatesh Ramaiah Dr Ted Diethrich lessons carried forward The Antegrade Flow Show retrieved 2021 10 28 Dr Ted Diethrich founder of Arizona Heart Institute dies at 81 www beckershospitalreview com Retrieved 2021 10 28 Suckow BD Goodney PP Columbo JA Kang R Stone DH Sedrakyan A Cronenwett JL Fillinger MF Jun 2018 National Trends in Open Surgical Endovascular and Branched Fenestrated Endovascular Aortic Aneurysm Repair in Medicare Patients Journal of Vascular Surgery 67 6 1690 1697 e1 doi 10 1016 j jvs 2017 09 046 PMC 5970963 PMID 29290495 Retrieved 23 Sep 2020 Trusts reveal plans to centralise services after GIRFT review Health Service Journal 19 March 2018 Retrieved 13 May 2018 Ho Karen J 2023 Rutherford s Vascular Surgery and Endovascular Therapy Chapter 4 Atherosclerosis Elsevier Health pp 41 50 ISBN 978 0 323 77557 1 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Van Hooft I M Zeebregts C J Van Sterkenburg S M De Vries W R Reijnen M M 2009 The persistent sciatic artery European Journal of Vascular and Endovascular Surgery 37 5 585 591 doi 10 1016 j ejvs 2009 01 014 PMID 19231248 Crawford classification Retrieved 13 February 2023 Kassem M M Gonzalez L 2022 Splenic Artery Aneurysm StatPearls PMID 28613599 Chaer R A Abularrage C J Coleman D M Eslami M H Kashyap V S Rockman C Murad M H 2020 The Society for Vascular Surgery clinical practice guidelines on the management of visceral aneurysms Journal of Vascular Surgery 72 1S 3S 39S doi 10 1016 j jvs 2020 01 039 PMID 32201007 S2CID 214617284 Farber A Angle N Avgerinos E Dubois L Eslami M Geraghty P Haurani M Jim J Ketteler E Pulli R Siracuse J J Murad M H 2022 The Society for Vascular Surgery clinical practice guidelines on popliteal artery aneurysms Journal of Vascular Surgery 75 1S 109S 120S doi 10 1016 j jvs 2021 04 040 PMID 34023430 S2CID 235170081 Khattar R S Fox D J Alty J E Arora A 1 February 2005 Pulmonary artery dissection an emerging cardiovascular complication in surviving patients with chronic pulmonary hypertension Heart 91 2 142 145 doi 10 1136 hrt 2004 045799 PMID 15657218 S2CID 11516764 Retrieved 13 February 2023 Lombardi J V Hughes G C Appoo J J Bavaria J E Beck A W Cambria R P Charlton Ouw K Eslami M H Kim K M Leshnower B G Maldonado T Reece T B Wang G J 2020 Society for Vascular Surgery SVS and Society of Thoracic Surgeons STS reporting standards for type B aortic dissections Journal of Vascular Surgery 71 3 723 747 doi 10 1016 j jvs 2019 11 013 PMID 32001058 S2CID 210984324 Acosta S Goncalves F B 2021 Management of Spontaneous Isolated Mesenteric Artery Dissection A Systematic Review Scandinavian Journal of Surgery 110 2 130 138 doi 10 1177 14574969211000546 PMC 8258720 PMID 33724090 Gobble Ryan M Brill Eliott R Rockman Caron B Hecht Elizabeth M Lamparello Patrick J Jacobowitz Glenn R Maldonado Thomas S 2009 Endovascular treatment of spontaneous dissections of the superior mesenteric artery Journal of Vascular Surgery 50 6 1326 1332 doi 10 1016 j jvs 2009 07 019 PMID 19782510 Goodman G H 1918 Angina Abdominus The American Journal of the Medical Sciences 155 4 524 528 doi 10 1097 00000441 191804000 00003 S2CID 72885362 SHAW RS MAYNARD EP 3rd 1958 Acute and chronic thrombosis of the mesenteric arteries associated with malabsorption a report of two cases successfully treated by thromboendarterectomy The New England Journal of Medicine 258 18 874 878 doi 10 1056 NEJM195805012581803 PMID 13541677 Aburahma A F Avgerinos E D Chang R W Darling Rc 3rd Duncan A A Forbes T L Malas M B Murad M H Perler B A Powell R J Rockman C B Zhou W 2022 Society for Vascular Surgery clinical practice guidelines for management of extracranial cerebrovascular disease Journal of Vascular Surgery 75 1S 4S 22S doi 10 1016 j jvs 2021 04 073 PMID 34153348 S2CID 235596620 Specialty at a Glance Society for Vascular Surgery Patel S K Surowiec S M 2022 Venous Insufficiency StatPearls PMID 28613694 Waheed S M Kudaravalli P Hotwagner D T 2022 Deep Vein Thrombosis StatPearls PMID 29939530 Dalsing Michael C 2023 Rutherford s Vascular Surgery and Endovascular Therapy Chapter 159 Chronic Venous Insufficiency Deep Vein Valve Reconstruction Elsevier Health pp 2098 2111 ISBN 978 0 323 77557 1 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Gloviczki Peter 26 December 2008 Handbook of Venous Disorders Guidelines of the American Venous Forum Third Edition CRC Press ISBN 978 0 340 93880 5 Joh M Desai K R 2021 Treatment of Nonthrombotic Iliac Vein Lesions Seminars in Interventional Radiology 38 2 155 159 doi 10 1055 s 0041 1727101 PMC 8175115 PMID 34108800 Jayaraj Arjun 2023 Rutherford s Vascular Surgery and Endovascular Therapy Chapter 160 Iliocaval Venous Obstruction Surgical Treatment Elsevier Health pp 2132 2147 ISBN 978 0 323 77557 1 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Alimi Yves S Sr 2023 Rutherford s Vascular Surgery and Endovascular Therapy Chapter 161 Iliocaval Venous Obstruction Endovascular Treatment Elsevier Health pp 2112 2131 ISBN 978 0 323 77557 1 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Power Adam H Gloviczki Peter 2014 Left iliac vein occlusion treated with a Palma procedure Journal of Vascular Surgery Venous and Lymphatic Disorders 2 2 204 205 doi 10 1016 j jvsv 2012 10 053 PMID 26993190 Stevens S M Woller S C Baumann Kreuziger L Bounameaux H Doerschug K Geersing G J Huisman M V Kearon C King C S Knighton A J Lake E Murin S Vintch JRE Wells P S Moores L K 2021 Executive Summary Antithrombotic Therapy for VTE Disease Second Update of the Chest Guideline and Expert Panel Report Chest 160 6 2247 2259 doi 10 1016 j chest 2021 07 056 PMID 34352279 S2CID 236933535 Broderick Cathryn Watson Lorna Armon Matthew P 2021 Thrombolytic strategies versus standard anticoagulation for acute deep vein thrombosis of the lower limb Cochrane Database of Systematic Reviews 2021 1 CD002783 doi 10 1002 14651858 CD002783 pub5 PMC 8094969 PMID 33464575 Azirar Sara Appelen Diebrecht Prins Martin H Neumann Martino HAM De Feiter Adriaan NP Kolbach Dinanda N 2019 Compression therapy for treating post thrombotic syndrome Cochrane Database of Systematic Reviews 2019 9 CD004177 doi 10 1002 14651858 CD004177 pub2 PMC 6749555 PMID 31531971 Augustinos P Ouriel K August 2004 Invasive approaches to treatment of venous thromboembolism Circulation 110 9 Suppl 1 I27 34 doi 10 1161 01 CIR 0000140900 64198 f4 PMID 15339878 Madani Michael M 2016 50 Pulmonary Thromboendarterectomy In Peacock Andrew J Naeije Robert Rubin Lewis J eds Pulmonary Circulation Diseases and Their Treatment Fourth Edition CRC Press p 541 ISBN 978 1 4987 1991 9 Gogalniceanu Peter 2021 Rich s Vascular Trauma 4th ed Chapter 2 Epidemiology of Vascular Trauma Elsevier Medical pp 23 33 ISBN 978 0 323 69766 8 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Barmparas G Inaba K Talving P David J S Lam L Plurad D Green D Demetriades D 2010 Pediatric vs adult vascular trauma A National Trauma Databank review Journal of Pediatric Surgery 45 7 1404 1412 doi 10 1016 j jpedsurg 2009 09 017 PMID 20638516 Arbabi Cassra N 2023 Rutherford s Vascular Surgery and Endovascular Therapy 10th ed Chapter 181 Thoracic Vascular Trauma Elsevier Medical pp 2397 2410 ISBN 978 0 323 77559 5 a href Template Cite book html title Template Cite book cite book a CS1 maint location link Hooi JD Kester AD Stoffers HE Overdijk MM van Ree JW Knottnerus JA April 2001 Incidence of and risk factors for asymptomatic peripheral arterial occlusive disease a longitudinal study Am J Epidemiol 153 7 666 72 doi 10 1093 aje 153 7 666 PMID 11282794 Ashton HA Buxton MJ Day NE et al November 2002 The Multicentre Aneurysm Screening Study MASS into the effect of abdominal aortic aneurysm screening on mortality in men a randomised controlled trial Lancet 360 9345 1531 9 doi 10 1016 S0140 6736 02 11522 4 PMID 12443589 S2CID 21497118 Mortality results for randomised controlled trial of early elective surgery or ultrasonographic surveillance for small abdominal aortic aneurysms The UK Small Aneurysm Trial Participants Lancet 352 9141 1649 55 November 1998 doi 10 1016 S0140 6736 98 10137 X PMID 9853436 S2CID 24733279 Lederle FA Wilson SE Johnson GR et al August 1994 Design of the abdominal aortic Aneurysm Detection and Management Study ADAM VA Cooperative Study Group J Vasc Surg 20 2 296 303 doi 10 1016 0741 5214 94 90019 1 PMID 8040955 Thompson JF Mullee MA Bell PR et al July 1996 Intraoperative heparinisation blood loss and myocardial infarction during aortic aneurysm surgery a Joint Vascular Research Group study Eur J Vasc Endovasc Surg 12 1 86 90 doi 10 1016 S1078 5884 96 80281 4 PMID 8696904 Barnett Henry J M Taylor D Wayne Eliasziw Michael Fox Allan J Ferguson Gary G Haynes R Brian Rankin Richard N Clagett G Patrick Hachinski Vladimir C Sackett David L Thorpe Kevin E 1998 11 12 Benefit of Carotid Endarterectomy in Patients with Symptomatic Moderate or Severe Stenosis New England Journal of Medicine 339 20 1415 1425 doi 10 1056 NEJM199811123392002 ISSN 0028 4793 PMID 9811916 LLC Peripheral Brain NASCET Wiki Journal Club www wikijournalclub org Retrieved 2021 02 11 Table 1 The Single Nucleotide Polymorphisms in cathepsin B protein mined from literature PMID 16492714 doi 10 7717 peerj 7425 table 1 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help ACAS Wiki Journal Club www wikijournalclub org Retrieved 2021 02 11 VascularWeb New Vascular Surgery Training ParadigmsExternal links EditSociety for Vascular Surgery U S European Society for Vascular Surgery Retrieved from https en wikipedia org w index php title Vascular surgery amp oldid 1175019723, wikipedia, wiki, book, books, library,

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