Regional anesthesia and pain medicine
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Reg Anesth Pain Med · Nov 2013
Randomized Controlled Trial Comparative StudyA Dose-Ranging Study of 0.5% Bupivacaine or Ropivacaine on the Success and Duration of the Ultrasound-Guided, Nerve-Stimulator-Assisted Sciatic Nerve Block: A Double-Blind, Randomized Clinical Trial.
Before bifurcation, the sciatic nerve is composed of 2 component nerves encased in a common investing extraneural layer (CIEL). We examined the effect of various volumes injected beneath the CIEL on the success and duration of sciatic nerve block. ⋯ Injecting 10 mL of 0.5% bupivacaine or ropivacaine below the CIEL produces comparable onset and duration of sensory and motor blockade as volumes as large as 30 mL.
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Reg Anesth Pain Med · Nov 2013
Randomized Controlled Trial Comparative StudyUltrasound-guided Sciatic Nerve Block in Overweight and Obese Patients: A Randomized Comparison of Performance Time Between the Infragluteal and Subgluteal Space Techniques.
Despite ultrasound (US) guidance, sciatic nerve block (SNB) remains among the least performed peripheral blocks. By targeting the tissue plane between the gluteus maximus and quadratus femoris muscles, the US-guided subgluteal space technique may facilitate the performance of US-guided SNB. We aimed to evaluate whether the subgluteal space technique shortens SNB performance time in overweight and obese patients compared with the conventional infragluteal technique. ⋯ The subgluteal space technique may be performed 50% faster, with no detectable differences in block success and analgesic efficacy, compared with the infragluteal technique for US-guided SNB in overweight and obese patients receiving multimodal analgesia. Injection of local anesthetics along tissue planes may produce similar block characteristics to perineural injection for US-guided SNB.
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Reg Anesth Pain Med · Nov 2013
Randomized Controlled Trial Comparative StudyAdductor Canal Block Versus Femoral Nerve Block for Analgesia After Total Knee Arthroplasty: A Randomized, Double-blind Study.
Quadriceps strength is better preserved after adductor canal block for total knee arthroplasty than femoral nerve block with similar analgesic effect.
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