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Pain and nausea after bariatric surgery with total intravenous anesthesia versus desflurane anesthesia: a double blind, randomized, controlled trial.

Aftab H, Fagerland MW, Gondal G, Ghanima W, Olsen MK, Nordby T. Pain and nausea after bariatric surgery with total intravenous anesthesia versus desflurane anesthesia: a double blind, randomized, controlled trial. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery. 2019 Sep 1; 15(9):1505-1512.

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BACKGROUND: There is limited evidence-based knowledge regarding optimal anesthesia in obese patients. OBJECTIVE: To evaluate optimal anesthetic approach for patients undergoing bariatric surgery by determining and comparing peri- and postoperative outcomes in patients receiving intravenous anesthesia with propofol versus desflurane anesthesia. SETTING: Nonacademic primary referral center. METHODS: Patients who underwent laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass between 2016 and 2017 were randomized into 1 of the following 2 types of anesthesia: intravenous anesthesia with propofol, or desflurane. Perioperative outcomes were registered by the operation staff. A form based on visual analog scale estimating the patient''s intensity of pain and nausea was completed postoperatively at the postoperative unit, surgical ward, and 24 to 48 hours postsurgery. The primary outcome was postoperative nausea and vomiting or postoperative pain between treatment groups. The secondary outcome was to evaluate the "time of awakening," peritoneal stretch, and use of perioperative muscle relaxants. RESULTS: One hundred eighty-three patients were randomized to receive intravenous anesthesia (n  =  90) or desflurane anesthesia (n = 93). Mean time ± standard deviation of surgery for both procedures was 41 ± 17 minutes, whereas mean time of awakening was 2 ± 2 minutes for both the intravenous anesthesia and desflurane group. There was no significant difference in visual analog scale for pain or for nausea and vomiting postoperatively, nor in the number of patients receiving muscle relaxants for peritoneal stretch between the 2 groups. CONCLUSIONS: We found no significant differences between the 2 anesthetic regimens regarding postoperative nausea and pain, awakening time, peritoneal stretch, or the use of perioperative muscle relaxants.

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