Table 2.
Changes of respiratory parameters during surgery.
| Variables | Group | Tind | Tpp10 | Tpp40 |
|---|---|---|---|---|
| Ppeak (cmH2O) | Normocapnia | 14 ± 4 | 21 ± 4 * | 21 ± 4 * |
| Hypercapnia | 13 ± 2 | 20 ± 3 * | 19 ± 3 * | |
| Pplat (cmH2O) | Normocapnia | 11 ± 4 | 17 ± 4 * | 17 ± 4 * |
| Hypercapnia | 11 ± 2 | 17 ± 3 * | 17 ± 4 * | |
| RR (breaths/min) | Normocapnia | 15 ± 3 | 20 ± 4 * | 20 ± 4 * |
| Hypercapnia | 14 ± 4 | 11 ± 2 * | 12 ± 2 | |
| Cdyn (l/cmH2O) | Normocapnia | 36 ± 10 | 21 ± 5 * | 21 ± 5 * |
| Hypercapnia | 37 ± 9 | 22 ± 4 * | 23 ± 7 * | |
| Cstat (l/cmH2O) | Normocapnia | 61 ± 41 | 28 ± 9 * | 27 ± 8 * |
| Hypercapnia | 58 ± 25 | 28 ± 9 * | 28 ± 12 * | |
| MP (J/min) | Normocapnia | 5 ± 1 | 9 ± 2 * | 9 ± 2 * |
| Hypercapnia | 4 ± 2 | 5 ± 1 | 5 ± 1 |
Values are presented as mean ± SD. Tind, 10 min after anesthesia induction; Tpp 10 and 40, 10, and 40 min after the induction of pneumoperitoneum; Ppeak, peak airway pressure; Pplat, plateau airway pressure; RR, respiratory rate; Cdyn, dynamic effective compliance; Cstat static effective compliance; MP, mechanical power. * p < 0.05 vs. Tind.