Study of the Use of Humidified Warmed Gas and the Effect on Post-Operative Pain in Laparoscopic Cholecystectomies

Randomised Controlled Trail of Warmed Humidified Insufflation Versus Cold Non-Humidified Insufflation in Elective Laparoscopic Cholecystectomies: Does This Reduce Post-Operative Pain?

Double blind RCT comparing elective laparoscopic cholecystectomy using warmed, humidified gas (new) against laparoscopic cholecystectomy with cool, dry gas (usual). Sample size of 200 patients. Outcome measures are postoperative opiate analgesia use, and post operative numerical pain scores.

Inclusion Criteria:

• elective laparoscopic cholecystectomy
• 18 years of age or over

Exclusion Criteria:

• under 18 years of age
• prisoners
• converted to open operation
• secondary invasive procedure during operation
• unable to give consent for whatever reason