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BioMed Research International
Volume 2015, Article ID 902745, 5 pages
Clinical Study

Effects of Interscalene Nerve Block for Postoperative Pain Management in Patients after Shoulder Surgery

1Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
2College of Medicine, Chang Gung University, Taoyuan 333, Taiwan

Received 20 August 2015; Accepted 11 October 2015

Academic Editor: Adair Santos

Copyright © 2015 Hsiu-Pin Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. Shoulder surgery can produce severe postoperative pain and movement limitations. Evidence has shown that regional nerve block is an effective management for postoperative shoulder pain. The purpose of this study was to investigate the postoperative analgesic effect of intravenous patient-controlled analgesia (PCA) combined with interscalene nerve block in comparison to PCA alone after shoulder surgery. Methods. In this study, 103 patients receiving PCA combined with interscalene nerve block (PCAIB) and 48 patients receiving PCA alone after shoulder surgery were included. Patients’ characteristics, preoperative shoulder score and range of motion, surgical and anesthetic condition in addition to visual analog scale (VAS) pain score, postoperative PCA consumption, and adverse outcomes were evaluated. Results. The results showed that PCA combined with interscalene nerve block (PCAIB) group required less volume of analgesics than PCA alone group in 24 hours ( mL versus  mL, ) and 48 hours ( mL versus  mL, ) postoperatively. The incidence of dizziness in PCAIB group was significantly lower than PCA group (resp., 1.9% and 14.6%, ). VAS, nausea, and vomiting were less in group PCAIB, but in the absence of significant statistical correlation. Conclusion. Interscalene nerve block is effective postoperatively in reducing the demand for PCA analgesics and decreasing opioids-induced adverse events following shoulder surgery.