Dexmedetomidine infusion during laparoscopic bariatric surgery: the effect on recovery outcome variables.

Background: Dexmedetomidine (Dex), an alpha(2) agonist, has well-known anesthetic and analgesic-sparing effects. We designed this prospective, randomized, double-blind, and placebo-controlled dose-ranging study to evaluate the effect of Dex on both early and late recovery after laparoscopic bariatric surgery.

Methods: Eighty consenting ASA II-III morbidly obese patients were randomly assigned to 1 of 4 treatment groups: (1) control group received a saline infusion during surgery, (2) Dex 0.