248 February 2013 I ntroduction of ultrasound as a monitor of needle placement and disposition of the local anesthetic has had a significant impact on the clinical practice of peripheral nerve blocks. in particular, the ability to visualize the interaction between needle and anatomy in real time has led to an increase in the use and success of peripheral nerve blocks. not surprisingly, ultrasou...

This study compared the orbicularis oculi muscle to the adductor pollicis muscle during vecuronium blockade. The orbicularis oculi muscle was found to be more resistant to and recovered from vecuronium neuromuscular blockade faster than the adductor pollicis muscle. Thus, caution should be utilized when assessing neuromuscular block with the orbicularis oculi muscle.