After obtaining informed consent,80 morbidly obese ASA II-III patients undergoing
laparoscopic bariatric surgery procedures would be randomly assigned to one of four study
groups at UTSWMC at Dallas.Hemodynamic paarameters, recovery times, postoperative pain
scores, the need for rescue analgesics and side effects will be recorded.The purpose of this
study is to determine the optimal linfusion rate of dexmedetomidine for maintaining
cardiovscular stability during general anesthesia.