Journal of the Medical Association of Thailand Vol 101, No 8:AUGUST 2018 0125-2208 101 8 2018 Aug Comparison between Forced Air and Intravenous Fluid Warmer in Gynecologic Laparoscopic Surgery: A Randomized Trial 1005-8 EN Warunee Boayam Phongthara Vichitvejpaisal Pawan Suton Sarisa Tapala Original Article To compare the difference between core and room temperature in patients undergoing gynecologic laparoscopic surgery by using forced air and intravenous fluid warmer. After IRB approval COA: Si201/2016, the present study has been registered at ClinicalTrials.gov NCT02990429. A prospective experimental study was conducted with 90 patients. All participants were randomized into two groups, A) receiving intra-operative forced air warming, and B) having intra-operative intravenous fluid via a flowing warmer. The core and room temperatures were measured at 15-minute interval until the end of surgery. The data was expressed as means and standard deviation. The p-value lower than 0.05 was considered statistical significance at 95% confidence interval. Eighty-six patients completed the trial. Temperature of both groups appeared to decrease insignificantly after induction, but it showed a slightly lower in group B (22.8±1.3°C) as compared to group A (22.9±1.0°C). In addition, group A (35.4±0.7°C) presented a little higher temperature than that of group B (35.2±0.8°C) in the recovery room. The forced air warmer was as clinically effective as the fluid warmer in gynecologic laparaoscopic surgery. Hypothermia Gynecologic laparoscopic surgery General anesthesia