Table 1.

Patient population^a

Patient demographics	Pulmonary ARDS	Extrapulmonary ARDS
Number of patients	12	4
Average age, years	63	66
SAPS II	47	39
Organ failureb	2.5	1.75
PaO2/FiO2 ratio at time 0, mmHg	99	97.5
Deaths, n	5	2
Diagnosis, n
Pneumonia	9
Aspiration	3
Acute pancreatitis		4

^aARDS, acute respiratory distress syndrome; SAPS II, Simplified Acute Physiology Score II; PaO₂/FiO₂ ratio, ratio of arterial oxygen partial pressure to fraction of inspired oxygen. ^bOrgan Dysfunction and/or Infection score was used to quantify the number of organ failures.