Table 1 Baseline demographic and clinical data of the patients (\( \overline{\mathrm{x}} \) ±s, n = 19)
From: The effects of low tidal ventilation on lung strain correlate with respiratory system compliance
All (n = 19) | C ≥ 0.6 (n = 9) | C < 0.6 (n = 10) | p value | |
|---|---|---|---|---|
Male n,% | 13 (68) | 7 (78) | 6 (60) | 0.628 |
Age, years | 70 ± 14 | 71 ± 12 | 68 ± 17 | 0.687 |
Height, cm | 170 ± 6 | 170 ± 7 | 170 ± 7 | 0.937 |
IBW, kg | 64.9 ± 7.3 | 65.4 ± 7.9 | 64.4 ± 7.0 | 0.769 |
APACHE II | 19.3 ± 6.8 | 18.6 ± 8.3 | 19.9 ± 5.6 | 0.681 |
Murray score | 2.4 ± 0.5 | 2.2 ± 0.4 | 2.6 ± 0.6 | 0.082 |
ARDSp/ARDSexp, n | 15/4 | 7/2 | 8/2 | 1.000 |
PaO2/FiO2, mmHg | 200 ± 87 | 212 ± 69 | 189 ± 103 | 0.580 |
Hours of ventilation | 67.6 ± 36.1 | 69.8 ± 34.0 | 65.7 ± 39.7 | 0.814 |
VT, ml/kg | 6.6 ± 1.1 | 6.7 ± 1.1 | 6.5 ± 1.3 | 0.720 |
PEEP, cmH2O | 8.2 ± 1.7 | 8.3 ± 1.6 | 8.1 ± 1.9 | 0.777 |
C, ml/(cmH2O/kg) | 0.65 ± 0.22 | 0.83 ± 0.20 | 0.49 ± 0.07* | 0.001 |
EELV, ml | 1873 ± 1065 | 2546 ± 1024 | 1267 ± 689* | 0.005 |
Strain | 0.31 ± 0.19 | 0.19 ± 0.08 | 0.42 ± 0.20* | 0.007 |
Severity of ARDS, n (%) | ||||
mild | 7 (36.8) | 4 (44.4) | 3 (30.0) | 0.650 |
moderate | 10 (52.6) | 5 (55.6) | 5 (50.0) | 1.000 |
severe | 2 (10.5) | 0 (0) | 2 (20.0) | 0.474 |
28-day mortality, n (%) | 8 (42.1) | 3 (33.3) | 5 (50) | 0.788 |