Table 2 Comparison of ventilatory parameters and arterial to end-tidal CO2 gradient between the two groups
Time of measurement | Patient parameters | RAS group (n = 25) | LAS group (n = 20) | P value |
|---|---|---|---|---|
Postinduction of Pneumoperitoneum | Pplat (cmH2O) | 25.0 ± 5.3 | 22.2 ± 4.6 | 0.75 |
Lc (mL/cmH2O) | 26.4 ± 6.4 | 33.0 ± 7.2 | 0.33 | |
ΔCO2 (mmHg) | 7.9 ± 3.9 | 6.1 ± 4.5 | 0.36 | |
One-hour into surgery | Pplat (cmH2O) | 26.2 ± 4.5 | 20.2 ± 3.5 | 0.05* |
Lc (mL/cmH2O) | 28.2 ± 8.5 | 40.5 ± 13.9 | 0.01* | |
ΔCO2 (mmHg) | 12.9 ± 4.5 | 7.4 ± 4.4 | 0.02* | |
Two-hour into surgery | Pplat at T3 (cmH2O) | 25.2 ± 5.7 | 17.9 ± 3.1 | 0.01* |
Lc at T3 (mL/cmH2O) | 26.2 ± 7.8 | 54.6 ± 16.9 | 0.01* | |
ΔCO2 (mmHg) | 15.2 ± 4.5 | 7.7 ± 4.9 | 0.02* | |
End of surgery | Pplat at T4 (cmH2O) | 19.9 ± 5.0 | 17.0 ± 2.7 | 0.02* |
Lc at T4 (mL/cmH2O) | 36.3 ± 9.9 | 58.2 ± 21.3 | 0.01* | |
ΔCO2 (mmHg) | 11.0 ± 6.6 | 7.0 ± 4.6 | 0.03* |