Ketamine for Postoperative Pain in Bariatric Surgery

About This Study

The aim of this study was to evaluate an effect of pre - incisional single injection of low-dose ketamine on postoperative pain after remifentanil infusion in patients undergoing laparoscopic gastric bypass and gastric plication surgery. Ketamine is an old general anaesthetic. Low doses of it might be used as a adjunct in postoperative analgesia.The investigators expect that the low-dose ketamine reduces postoperative pain after bariatric surgeries.

Conditions Studied

Interventions

• •Ketamine
• •Saline
• •Ketamine
• •Ketamine
• •Ketamine

Eligibility

Inclusion Criteria:

* II or III The American Society of Anesthesiologists (ASA) physical status
* age \> 18 years
* bariatric surgery with general remifentanil anesthesia

Exclusion Criteria:

* anamnesis of using opioids for the treatment of chronic pain
* opioid dependence
* younger than 18 years