A comparison of posterior and medial cord stimulation for neurostimulation-guided vertical infraclavicular block: A randomized noninferiority clinical trial

Chun Woo Yang, Sung Mee Jung, Hee Uk Kwon, Po Soon Kang, Choon Kyu Cho, Jin Young Oh, Younsuk Lee, Junghee Choi

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

BACKGROUND: We investigated whether medial cord stimulation is inferior to posterior cord stimulation for vertical infraclavicular block with respect to block success. METHODS: Ninety-six patients scheduled for upper limb surgery were randomly elicited a medial or posterior cord response for infraclavicular block using 40 mL of 0.5% ropivacaine. We assessed block success (complete sensory block of the 5 nerves in the forearm at 50 minutes) as the primary end point and block procedure characteristics and adverse events as secondary end points. RESULTS: The block success rates did not differ significantly between medial and posterior cord stimulation (95.7% [44/46] vs 91.7% [44/48], 95% CI of difference, -7.4% to 15.6%), while the secondary end points were comparable in both groups. CONCLUSIONS: Needle manipulation to elicit medial cord response is noninferior to posterior cord response of block success during neurostimulation-guided vertical infraclavicular block.

Original languageEnglish
Pages (from-to)874-878
Number of pages5
JournalAnesthesia and Analgesia
Volume118
Issue number4
DOIs
StatePublished - Apr 2014

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