Continuous Postoperative Infusion of a Regional Anesthetic after an Amputation of the Lower Extremity. A Randomized Clinical Trial*†

Abstract
We performed a prospective, randomized clinical trial to determine whether continuous infusion of bupivacaine hydrochloride decreased the use of narcotics for the relief of pain after an amputation. Twenty-one patients who were to have an amputation of the lower extremity because of ischemic