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- W2313701444 abstract "In Brief BACKGROUND: In this study, we hypothesized that leg positioning and distal tourniquet application, when compared with neutral positioning of the leg, alters the efficacy of sciatic nerve block performed by the double-stimulation technique. METHODS: Ninety randomized, consecutive, ASA physical status I to III patients undergoing foot and ankle surgery with a popliteal fossa block (using a double-stimulation technique with the patient in prone position) were prospectively studied. Patients were randomized to have the blocked leg either kept in a neutral position immediately after the patient was turned supine (group 1), flexed 45 degrees at the thigh and maintained in that position for 15 minutes (group 2), or have a distal tourniquet applied with the leg in a neutral position and inflated during injection of the local anesthetic with the patient supine (group 3). A standardized local anesthetic mixture containing 15 mL of 2% prilocaine and 15 mL of 0.5% levobupivacaine was used in all study groups. RESULTS: The onset times for sensory and motor blocks were shorter, and the time to recovery of blocks was longer, postprocedure in both group 2 and 3. CONCLUSIONS: Similar beneficial effects might be reached with the application of a distal tourniquet during injection or elevating the patient's leg turned supine immediately after sciatic nerve block with a popliteal approach by a double-injection technique. We suggest that using the leg-up position or application of a distal tourniquet for sciatic nerve block may lead to a more proximal distribution of the local anesthetic and may result in a faster onset of sensory and motor blocks as well as longer duration of blockade. Published ahead of print September 29, 2011" @default.
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- W2313701444 date "2011-12-01" @default.
- W2313701444 modified "2023-10-07" @default.
- W2313701444 title "Distal Tourniquet or Leg Position After Injection Enhances the Efficacy of Sciatic Nerve Blockade by the Popliteal Approach" @default.
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- W2313701444 doi "https://doi.org/10.1213/ane.0b013e31822f8b99" @default.
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