Intraoperative arterial blood gas data
| PaCO2-ValveDepl≤60 mm Hg (n=149) | PaCO2-ValveDepl>60 mm Hg (n=52) | P value | PaCO2-%increase<50% (n=165) | PaCO2-%increase>50% (n=29) | P value | pH-ValveDepl>7.2 (n=194) | pH-ValveDepl≤ 7.2 (n=7) | P value | |
| pH-ValveDepl Mean±SD (Range) | 7.33±0.05 (7.20–7.52) | 7.25±0.04 (7.15–7.33) | <0.001 | 7.32±0.06 (7.15–7.52) | 7.25±0.05 (7.17–7.33) | <0.001 | 7.31±0.06 (7.21–7.52) | 7.18±0.02 (7.15–7.20) | <0.001 |
| PaCO2-ValveDepl (mm Hg) Mean±SD (Range) | 49.8±6.4 (30.0–60.0) | 68.3±7.8 (61.0–100.0) | <0.001 | 53.0±9.8 (30.0–100.0) | 63.2±10.0 (42.0–89.0) | <0.001 | 53.8±9.5 (30.0–84.0) | 77.0±15.0 (56.0–100.0) | <0.001 |
| PaO2-ValveDepl (mm Hg) Mean±SD (Range) | 261.3±103.5 (80.0–605.0) | 258.0±133.5 (69.0–579) | 0.875 | 269.5±105.3 (80.0–605.0) | 225.6±141.1 (69.0–579) | 0.120 | 261.9±111.2 (69.0–605.0) | 213.7±123.2 (70.0–401.0) | 0.298 |
Th compares PaCO2-ValveDepl≤60 mm Hg and >60 mm Hg (201 total patients); PaCO2-%increase from baseline of ≤50% and >50% (194 total patients); and pH-ValveDepl≤7.2 and >7.2 (201 total patients).
PaCO2, arterial partial pressure of carbon dioxide; PaO2, arterial partial pressure of oxygen; ValveDepl, valve deployment.