We conducted a prospective, randomized study to compare differences between groups of patients given a brachial plexus block using an interscalene (IS) or an intersternocleidomastoid (ISCM) approach. Specific variables analyzed included overall success rates, time to achieve sensory and motor anesthesia, time to place block, and incidence of side effects. For the study, 81 patients were randomized to receive a brachial plexus blockade using the IS or ISCM approach followed by general anesthesia for their surgical procedure.
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