The Effects of Intravenous Lidocaine on Cardiovascular Changes by the use of Tourniquet under Anesthesia

Tourniquets were used for adequate hemostasis and good for operative field of the upper and lower extremities surgery. However, hypertension and tachycardia developed in patient undergoing lower limb surgery with the use of a tourniquet under anesthesia. This study was undertaken to evaluate the effectiveness of intravenous lidocaine for the hemodynamic changes with using a tourniquet under anesthesia. The results were as follows; 1) Heart rate was increased significantly 30 min after the use of tourniquet in all groups except group 4(lidocaine bolus with infusion group) and then in group 4 heart rate was descreased significantly 30 min after the use of tourniquet [U=53(8,8); p ) is better anesthetic technique than general anesthesia in patients undergoing lower limb surgery with the use of a tourniquet. With the administration of intravenous lidocaine under general anesthesia, hemodynamic changes by inflating tourniquet were depressed.