Table 2.

Phase I pulmonary parameters.

	Immediately Post-Op			Extubation			Time to Extubation (h)
	A-a Gradient (mmHg)	Respiratory Index	P/F Ratio	A-a Gradient (mmHg)	Respiratory Index	P/F Ratio
Patient 1	263	2.2	206	107	0.78	210	8
Patient 2	230	1.5	304	129	1.1	363	15
Patient 3	250	2.3	425	70	0.35	433	12
Patient 4	154	0.69	300	110	0.82	420	17
Patient 5	182	0.88	275	105	0.81	303	12
Patient 6	230	1.6	253	94	0.71	295	144
Patient 7	274	2.6	370	139	1.4	400	12

A-a gradient, alveolar-arterial PO2 gradient