Respiratory failure other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hadeel Maksoud M.D.[2]


Despite most patients being unable to perform a pulmonary function test during acute respiratory failure, pulmonary function testing may be useful with chronic respiratory failure. Chronic respiratory failure is usually due to an underlying restrictive disease, pulmonary function test findings include a decrease in FEV1 and a significant decrease in FVC with an overall increase in the FEV1/FVC ratio. It is unlikely that an obstructive lung disease would cause respiratory failure. In respiratory failure with significant cardiac function compromise, a right side cardiac catheter may be used. Catheterization is controversially used to assess those patients with acute hypoxemic respiratory failure where cardiac function is uncertain.

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  1. Mas A, Masip J (2014). "Noninvasive ventilation in acute respiratory failure". Int J Chron Obstruct Pulmon Dis. 9: 837–52. doi:10.2147/COPD.S42664. PMC 4136955. PMID 25143721.

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