Table 2.

Classification and evolution of the PaO2/FiO2 ratio.

Patient number	Grade of Szpilman Classification	PaO2/FiO2 at the time of admission to the ICU	PaO2/FiO2 immediately before drug administration	PaO2/FiO2 after 6 hours	PaO2/FiO2 after 24 hours	PaO2/FiO2 after 48 hours
1	Grade 6	101	108	134	179	206
2	Grade 4	97	102	127	185	210
3	Grade 5	115	121	158	212	268
4	Grade 6	96	98	115	138	175
5	Grade 4	114	119	173	232	412
6	Grade 2	200	220	288	310	407
7	Grade 5	107	122	179	212	315
8	Grade 3	121	143	161	198	274
9	Grade 5	112	128	179	255	367