Patients characteristics | All patients (n = 30) | PSV study (n = 10) | VCV study (n = 20) | p value PSV study vs. VCV study |
---|---|---|---|---|
Age, years | 61 ± 12 | 60 ± 10 | 62 ± 13 | 0.729 |
Male sex, n (%) | 17 (57) | 5 (50) | 12 (60) | 0.602 |
SAPS II score at admission | 50 ± 17 | 54 ± 19 | 48 ± 15 | 0.361 |
Etiology of AHRF, n (%) | 0.168 | |||
 Pneumonia | 16 (53) | 5 (50) | 11 (55) |  |
 Septic shock | 6 (20) | 1 (10) | 5 (25) |  |
 Trauma | 2 (7) | 2 (20) | 0 |  |
 Postoperative AHRF | 3 (10) | 2 (20) | 1 (5) |  |
 Other | 3 (10) | 0 (0) | 3 (15) |  |
ARDS on the day of the study, n (%) | 13 (43) | 5 (50) | 8 (40) | 0.602 |
Number of lung quadrants involved, n | 2 [1–3] | 2 [1, 2] | 3 [2–4] | 0.035 |
PaO2/FiO2 | 213 ± 56 | 241 ± 46 | 199 ± 57 | 0.053 |
Days on MV before study, n | 1 [1–2] | 2 [2–4] | 1 [1–2] | 0.055 |
In-hospital mortality, n (%) | 9 (30) | 2 (20) | 7 (35) | 0.398 |