Regional anesthesia and pain medicine
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Reg Anesth Pain Med · May 2011
Randomized Controlled Trial Comparative StudyIs circumferential injection advantageous for ultrasound-guided popliteal sciatic nerve block?: A proof-of-concept study.
Ultrasound (US) guidance, in some instances, can increase the success rate and reduce the onset and procedure times for peripheral nerve blockade compared with traditional nerve localization techniques. The presumptive mechanism for these benefits is the ability to accurately inject local anesthetic circumferentially around the target nerve. We aimed to determine whether ensuring circumferential spread of local anesthetic is advantageous for US-guided popliteal sciatic nerve block. ⋯ Ultrasound-guided circumferential injection of local anesthetic around the sciatic nerve at the popliteal fossa can improve the rate of sensory block without an increase in block procedure time or block-related complications compared with a single-location injection technique.