Continuous Interscalene Brachial Plexus Block for Postoperative Pain Control at Home: A Randomized, Double-Blinded, Placebo-Controlled Study

Abstract
In this study, we investigated the efficacy of patient-controlled regional analgesia for outpatients undergoing moderately painful orthopedic surgery of the shoulder. Preoperatively, patients (n = 20) received an interscalene nerve block and perineural catheter. Postoperatively, patients were discha