Table 2. Intracavital, Gastric, and Esophageal Pressures of Patients Undergoing Intraperitoneal or Left or Right Retroperitoneal CO²Insufflation

Data are mean ± SD from 20 anesthetized patients undergoing either intraperitoneal (n = 8) or left (n = 6) or right (n = 6) retroperitoneal (prone position) CO²insufflation. P  values in parenthesis derive from two-way (insufflation pressure × group) analysis of variance for repeated measurements within and across groups, respectively, as appropriate.

*P < 0.05 versus  group desufflation.

†P < 0.05 versus  group baseline.

‡P < 0.05 versus  preceding group value.

§P < 0.05 for comparison between groups at same insufflation pressure.

ANOVA = analysis of variance; NS = not significant.