To study postpelviscopic pain as related to the temperature of insufflated carbon dioxide (CO2) gas, a cohort study was conducted with two groups of 100 women. In one group the CO2 was warmed before insufflation, and in the other it was not. The patients were asked to rate the pain they felt during the operation and on the first and second postoperative days using a scale from zero (no pain) to 10 (unbearable pain). No significant differences were detected between the groups in terms of age, consumption of analgesics, and pain. Women for whom the CO2 was warmed before insufflation experienced less pain and required only a few analgesics.