Adding dexmedetomidine to morphine-based analgesia reduces early postoperative nausea in patients undergoing gynecological laparoscopic surgery: A randomized controlled trial

Abstract

Background: Few studies have investigated the effect of dexmedetomidine on postoperative nausea and vomiting (PONV) in patients underwent gynecological laparoscopic surgery. We investigated if adding dexmedetomidine to a morphine-based patient-controlled analgesia (PCA) could decrease the incidence of PONV in this high-risk patient population. Methods: In this prospective, randomized, double-blind and placebo-controlled study, 122 patients underwent gynecological laparoscopic surgery were assigned into two groups. Patients in the dexmedetomidine group (Group Dex) received a loading dose of dexmedetomidine 0.4μg/kg before the end of surgery, followed by morphine 0.5mg/ml plus dexmedetomidine 1μg/ml for postoperative i.v. PCA. Patients in the control group (Group Ctrl) received normal saline before the end of surgery, followed by morphine 0.5mg/ml alone for postoperative i.v. PCA. PCA pump was programmed as followed: bolus dose 2ml, lockout interval 8 minutes and background infusion at a rate of 1ml/h. The primary outcome was the incidence of nausea and vomiting within the first postoperative 24 hours. Results: Although there were no significant differences in regard to the total incidence of PONV (41.0% vs 52.5%, P=0.204), PONV We thank Ms.

Low-Dose Mannitol Pretreatment Reduces Postoperative Nausea And Vomiting In Patients Undergoing Gynaecological Laparoscopic Surgery: A Randomized, Double-Blind, Placebo-Controlled Trial 

“…Recently, numerous studies have investigated the incidence of PONV in different patients undergoing different types of surgeries or anesthesia [14,15]. Li et al [16]investigated the incidence of PONV in patients undergoing gynecological laparoscopic surgery, with a similar anesthesia management to our study. In their study, the incidence of PONV was 52.5% in the control group patients, followed by morphine alone for postoperative intravenous patient-controlled analgesia.…”