A clinical comparison of continuous interscalene brachial plexus block with different basal infusion rates of 0.2% ropivacaine for shoulder surgery.
10.4097/kjae.2010.59.1.27
- Author:
Chun Woo YANG
1
;
Sung Mee JUNG
;
Hee Uk KWON
;
Choon Kyu CHO
;
Jin Woong YI
;
Chul Woung KIM
;
Jong Kwon JUNG
;
Young Mi AN
Author Information
1. Department of Anesthesiology and Pain Medicine, School of Medicine, Konyang University, Daejeon, Korea. applejsm@hotmail.com
- Publication Type:Original Article ; Randomized Controlled Trial
- Keywords:
Continuous interscalene block;
Ropivacaine;
Shoulder surgery
- MeSH:
Amides;
Analgesia;
Anesthesia, General;
Anesthetics, Local;
Brachial Plexus;
Consensus;
Double-Blind Method;
Humans;
Prospective Studies;
Shoulder
- From:Korean Journal of Anesthesiology
2010;59(1):27-33
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: A continuous interscalene brachial plexus block is a highly effective postoperative analgesic modality after shoulder surgery. However, there is no consensus regarding the optimal basal infusion rate of ropivacaine for a continuous interscalene brachial plexus block. A prospective, double blind study was performed to compare two different basal rates of 0.2% ropivacaine for a continuous interscalene brachial plexus block after shoulder surgery. METHODS: Sixty-two patients receiving shoulder surgery under an interscalene brachial plexus block were included. The continuous interscalene brachial plexus block was performed using a modified lateral technique with 30 ml of 0.5% ropivacaine. Surgery was carried out under an interscalene brachial plexus block or general anesthesia. After surgery, the patients were divided randomly into two groups containing 32 each. During the first 48 h after surgery, groups R8 and R6 received a continuous infusion of 0.2% ropivacaine at 8 ml/h and 6 ml/h, respectively. The pain scores at rest and on movement, supplemental analgesia, motor block, adverse events and patient's satisfaction were recorded. RESULTS: The pain scores, supplemental analgesia, motor block, adverse events and patient's satisfaction were similar in the two groups. CONCLUSIONS: When providing continuous interscalene brachial plexus block after shoulder surgery, 0.2% ropivacaine at a basal rate of 8 ml/h or 6 ml/h produces similar clinical efficacy. Therefore, decreasing the basal rate of CISB is more appropriate considering the toxicity of local anesthetics.
