METHODS	A prospective randomized study was performed of 50 patients undergoing arthroscopic shoulder surgery who received irrigation fluid either with room temperature or warmed to 37 degrees C to 39 degrees C. Core body temperature was checked at regular intervals , and additional variables , such as length of anesthesia and surgery , amount of irrigation fluid and intravenous fluid used , amount of bleeding , weight gain , and postoperative pain were collected during surgery and postoperatively .\