Table 1.

Patient characteristics

CharacteristicValue
Age (years; mean ± SD)57 ± 16
Gender (male/female; n [%])22 (55)/18 (45)
Intubated (n/N [%])36/40 (90)
Hypotensive (n/N [%])36/40 (90)
Inotropic agent use (n/N [%])35/40 (87.5)
Primary diagnosis (%)
    sepsis72.5
    interstitial lung disease2.5
    altered mental status2.5
    upper gastrointestinal bleed2.5
    renal failure2.5
    congestive heart failure2.5
    pulmonary tuberculosis2.5
    pneumocystis pneumonia2.5
    pancreatitis2.5
    diabetic ketoacidosis2.5
    cor pulmonale2.5
    respiratory failure of unclear cause2.5