Comparison of ultrasound and nerve stimulation techniques for interscalene brachial plexus block for shoulder surgery in a residency training environment: a randomized, controlled, observer-blinded trial.

Abstract

On the basis of our results with inexperienced residents, we found that using US in guiding the interscalene approach to the brachial plexus significantly shortened the duration of intervals in conduction of the block and onset of anesthesia when compared with NS; moreover, these times could have significant cost savings for the institution. Finally, the use of US technology in an academic medical center facilitates safe, cost-effective, quality care.