Objective: To assess the anesthetic efficacy and complication rates of ultrasound-guided interscalene brachial plexus block for arm surgery.
Methods: 41 ASA I-III patients who underwent ultrasound-guided interscalene brachial plexus block using Lidocaine 1.5% between May and December 2024. The primary outcome was the proportion of patients achieving adequate surgical anesthesia. Secondary outcomes included block performance time, sensory and motor onset latencies, duration of sensory and motor blockade, and incidence of adverse events.
Results: Success rate 90.2% of patients achieved satisfactory anesthesia without conversion to general anesthesia. Block performance time 8.8 ± 1.9 min. Onset latencies sensory block onset 6.8 ± 2.2 min; motor block onset 8.9 ± 2.4 min. Duration of block sensory blockade lasted 149.4 ± 17.7 min; motor blockade lasted 131.1 ± 15.4 min. Adverse events nerve contact in 21.9 % of cases, vascular puncture in 12.2 %, and Claude-Bernard-Horner syndrome in 7.3%. No cases of recurrent laryngeal nerve palsy, subarachnoid/epidural injection, local anesthetic systemic toxicity, or injection-site infection were observed.
Conclusion: Ultrasound-guided interscalene brachial plexus block with provides reliable, high-quality surgical anesthesia for arm procedures, and low incidence of complications.