The files of patients who were operated on under intravenous regional anesthesia (IVRA) in orthopedics clinics between January 2009 and January 2010 were retrospectively investigated. A total of 312 patients, 164 patients with carpal tunnel syndrome and 148 patients with trigger finger were operated on under IVRA. Out of 164 patients who were operated on due to carpal tunnel syndrome, 50 patients in which either calcium channel blockers or beta blockers were used for treatment of critical blood pressure increase after tourniquet inflation and in which whole data were obtained, were included in the study.