Research Article
Heart-Protective Mechanical Ventilation in Postoperative Cardiosurgical Patients
Table 4
Changes in respiratory mechanics data in patients from the control group at three hours of the study, median (25th; 75th percentile), n = 24.
| | Data | Hours in ICU | | #1 | #2 | #3 | |
| | MV (l × min−1) | 10.5 (10.1; 12.0) | 6.2 (5.8; 7.0) | 6.2 (5.8; 7.0) | <0.001
>0.5 |
| | Va (l × min−1) | 9.2 (8.6; 10.1) | 5.2 (5.0; 5.8) | 5.2 (4.9; 5.8) | <0.001
= 0.54 |
| | (cmH2O) | 10.5 (10.0; 11.0) | 9.0 (8.0; 10.0) | 9.0 (8.0; 10.0) | <0.001
= 0.54 |
| | (cmH2O) | 22.0 (20.0; 23.0) | 21.0 (20.0; 22.0) | 21.5 (20.0; 22.0) | = 0.062
= 0.65
= 0.002 |
| | R (cmH2O × l−1 × sec−1) | 7.7 (6.9; 8.6) | 7.4 (6.8; 8.3) | 7.9 (7.1; 8.4) | = 0.95
= 0.032
= 0.086 |
| | С (ml × cmH2O−1) | 53.5 (49.3; 56.8) | 52.7 (49.9; 56.8) | 53.4 (50.8; 57.2) | = 0.27
= 0.11
= 0.92 |
| | Vds/Vte (%) | 15.0 (14.0; 17; 0) | 15.0 (13.0; 16.0) | 15.0 (13.0; 16.0) | = 0.36
= 1
= 0.36 |
| | ΔP (cmH2O) | 14.1 (13.2; 17.0) | 14.3 (12.9; 17.6) | 14.0 (12.7; 17.6) | = 0.3
= 0.06
= 0.98 |
|
|
MV: minute ventilation; Va: alveolar ventilation; : mean airway pressure; : inspiratory pressure; R: resistance; C: compliance; Vds/Vte: dead space/tidal volume ratio; Δ Р: driving pressure; P: Wilcoxon test. |
