Table 1 Demographic characteristics, respiratory mechanics, and hemodynamic parameters, according to respiratory system elastance
Characteristic | All patients n = 60 | Lower Ers n = 30 | Higher Ers n = 30 | P value |
|---|---|---|---|---|
Age (y) | 62 [51–72] | 64 [50–73] | 58 [53–69] | 0.36 |
Male gender (%) | 50 (83) | 27 (90) | 23 (77) | 0.17 |
Body mass index (kg/m2) | 27 [24–32] | 28 [24–32] | 27 [25–31] | 0.76 |
PEEP (cmH20) | 11 [9–12] | 12 [9–12] | 10 [8–12] | 0.13 |
Driving pressure (cmH2O) | 12 [11–15] | 11 [9–12] | 14 [13–16] | < 0.001 |
Crs (mL/cmH2O) | 32 [27–40] | 40 [36–45] | 27 [21–30] | < 0.001 |
Ers (cmH2O/L) | 32 [24–34] | 25 [22–28] | 38 [33–48] | < 0.001 |
PaO2/FiO2 (mmHg) | 142 [107–194] | 170 [131–224] | 119 [72–177] | < 0.01 |
PaCO2 (mmHg) | 42 [38–47] | 42 [36–46] | 44 [40–51] | 0.07 |
LVEF (%) | 60 [49–6] | 60 [49–68] | 60 [48–70] | 0.88 |
Cardiac index (L/min/m2) | 2.78 [2.42–3.40] | 2.69 [2.39–3.23] | 2.95 [2.44–3.71] | 0.24 |
RV/LV area ratio | 0.6 [0.50–0.70] | 0.6 [0.50–0.73] | 0.58 [0.49–0.70] | 0.96 |
Acute cor pulmonale (%) | 26 (43) | 13 (43) | 13 (43) | > 0.99 |
PFO shunt (%) | 6 (10) | 2 (7) | 4 (13) | 0.67 |
TPBT (%) | 12 (20) | 8 (27) | 4 (13) | 0.20 |