to test the hypothesis that regulation of tissue oxygen ( o2 ) extraction is disturbed in adult respiratory distress syndrome ( ards ) , the relationship between o2 availability and o2 extraction ratio ( o2er ) was studied in 36 patients with pulmonary edema who met the criteria for either ards ( n = 21 ) or acute congestive heart failure ( chf ) ( n = 15 ) .
C0030054
o2
C0034063
pulmonary edema