The Horowitz index or Horovitz index (also known as the Horowitz quotient or the P/F ratio) is a ratio used to assess lung function in patients, particularly those on ventilators. It is useful for evaluating the extent of damage to the lungs. The simple abbreviation as oxygenation can lead to confusion with other conceptualizations of oxygenation index.
In healthy lungs, the Horowitz index depends on age and usually falls between 350 and 450. A value below 300 is the threshold for mild lung injury, and 200 is indicative of a moderately severe lung injury. A value below 100 is a criterion for a severe injury.
The Horowitz index plays a major role in the diagnosis of acute respiratory distress syndrome (ARDS). Three severities of ARDS are categorized based on the degree of hypoxemia using the Horowitz index, according to the Berlin definition.[1]
HistoryEdit
The Horowitz index was first proposed in a 1974 paper by Joel H. Horovitz and two co-authors, Charles Carrico and G. Tom Shires.[2][3] The reason for the spelling with w is unclear.
^Joel H. Horovitz, Charles J. Carrico and G. Tom Shires (March 1974). "Pulmonary Response to Major Injury". Archives of Surgery. 108 (3): 349–355.
^John R. Feiner, Richard B. Weiskopf (2017). "Evaluating Pulmonary Function: An Assessment of PaO2/FiO2". Critical Care Medicine. 45 (1): e40–e48. doi:10.1097/CCM.0000000000002017.
This medical diagnostic article is a stub. You can help Wikipedia by expanding it.
horowitz, index, horovitz, index, also, known, horowitz, quotient, ratio, ratio, used, assess, lung, function, patients, particularly, those, ventilators, useful, evaluating, extent, damage, lungs, simple, abbreviation, oxygenation, lead, confusion, with, othe. The Horowitz index or Horovitz index also known as the Horowitz quotient or the P F ratio is a ratio used to assess lung function in patients particularly those on ventilators It is useful for evaluating the extent of damage to the lungs The simple abbreviation as oxygenation can lead to confusion with other conceptualizations of oxygenation index Horowitz indexLOINC50982 8 50984 4 50983 6 50985 1 50986 9The Horowitz index is defined as the ratio of partial pressure of oxygen in blood PaO2 in millimeters of mercury and the fraction of oxygen in the inhaled air FiO2 the PaO2 FiO2 ratio In healthy lungs the Horowitz index depends on age and usually falls between 350 and 450 A value below 300 is the threshold for mild lung injury and 200 is indicative of a moderately severe lung injury A value below 100 is a criterion for a severe injury The Horowitz index plays a major role in the diagnosis of acute respiratory distress syndrome ARDS Three severities of ARDS are categorized based on the degree of hypoxemia using the Horowitz index according to the Berlin definition 1 History EditThe Horowitz index was first proposed in a 1974 paper by Joel H Horovitz and two co authors Charles Carrico and G Tom Shires 2 3 The reason for the spelling with w is unclear See also EditArterial blood gasReferences Edit The ARDS Definition Task Force 2012 06 20 Acute respiratory distress syndrome The berlin definition JAMA 307 23 2526 2533 doi 10 1001 jama 2012 5669 ISSN 0098 7484 PMC 3408735 PMID 22797452 Joel H Horovitz Charles J Carrico and G Tom Shires March 1974 Pulmonary Response to Major Injury Archives of Surgery 108 3 349 355 John R Feiner Richard B Weiskopf 2017 Evaluating Pulmonary Function An Assessment of PaO2 FiO2 Critical Care Medicine 45 1 e40 e48 doi 10 1097 CCM 0000000000002017 This medical diagnostic article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Horowitz index amp oldid 1021220309, wikipedia, wiki, book, books, library,
