Table 4. Arterial Blood Gas Analysis.
| IND | T30 | END | PACU | ||
|---|---|---|---|---|---|
| pH | Laparoscopy | 7.48 ± 0.04 | 7.42 ± 0.04* | 7.44 ± 0.05 | 7.40 ± 0.06 |
| Open | 7.48 ± 0.04 | 7.47 ± 0.04 | 7.44 ± 0.04 | 7.39 ± 0.05 | |
| PaCO2 (mmHg) | Laparoscopy | 35 ± 3 | 40 ± 4* | 36 ± 4 | 40 ± 6 |
| Open | 34 ± 4 | 35 ± 6 | 36 ± 4 | 40 ± 8 | |
| PaO2 (mmHg) | Laparoscopy | 273 ± 53 | 270 ± 50 | 291 ± 46 | 182 ± 58 |
| Open | 280 ± 45 | 243 ± 62 | 267 ± 45 | 186 ± 75 | |
| HCO3- (mmol/L) | Laparoscopy | 26 ± 3 | 27 ± 3* | 25 ± 2 | 25 ± 2 |
| Open | 26 ± 2 | 25 ± 2 | 25 ± 2 | 24 ± 2 | |
| Lactate (mmol/L) | Laparoscopy | 0.8± 0.5 | 1.0 ± 0.6 | 1.5 ± 0.9 | 1.7 ± 0.9 |
| Open | 0.8 ± 0.3 | 1.0 ± 0.4 | 1.5 ± 1.0 | 1.7 ± 1.3 | |
| Hematocrit (%) | Laparoscopy | 39 ± 4 | 39 ± 5* | 35 ± 5 | 39 ± 5 |
| Open | 37 ± 6 | 36 ± 5 | 33 ± 5 | 37 ± 5 |
Values are means ± SD. IND: 10 min after anesthesia induction, T30: 30 min after CO2 insufflation in the laparoscopy group or peritoneal opening in the open group, END: end of operation, PACU: 30 minutes after arriving in the post-anesthetic care unit. *P < 0.05 vs. open group.