J Cooper1, S Benirschke, B Sangeorzan, C Bernards, W Edwards. 1. Department of Anesthesiology, University of Washington School of Medicine, Harborview Medical Center, Seattle, WA, USA. JeremyCo@adhb.govt.nz
Abstract
OBJECTIVE: To determine the effectiveness of analgesia, with or without sciatic nerve blockade, after open repair of calcaneus fracture. DESIGN: Randomized, prospective trial involving 30 patients divided into 3 groups of 10, all having open repair of calcaneus fractures. Group 1 used morphine patient-controlled analgesia alone. Groups 2 and 3 had morphine patient-controlled analgesia and a "one-shot" bupivacaine sciatic nerve blockade, either presurgically (group 2) or postsurgically (group 3). SETTING:Harborview Medical Center operating rooms and orthopedic floors. OUTCOME MEASURES: Morphine use over 24 hours, visual analogue scale pain scores, and sciatic nerve blockade duration. RESULTS: In the absence of sciatic nerve blockade, initial postoperative pain was marked, even with a mean recovery room dose of intravenous morphine more than 30 mg. Sciatic nerve blockade with bupivacaine had a mean duration of 14 hours and substantially reduced pain for the first 24 postoperative hours. Presurgical blockade confers no advantage over postsurgical blockade. CONCLUSION:Sciatic nerve blockade confers significant benefit over morphine alone for analgesia after open repair of calcaneus fractures. Postsurgical sciatic nerve blockade provides the longest possible postoperative block duration.
RCT Entities:
OBJECTIVE: To determine the effectiveness of analgesia, with or without sciatic nerve blockade, after open repair of calcaneus fracture. DESIGN: Randomized, prospective trial involving 30 patients divided into 3 groups of 10, all having open repair of calcaneus fractures. Group 1 used morphinepatient-controlled analgesia alone. Groups 2 and 3 had morphinepatient-controlled analgesia and a "one-shot" bupivacaine sciatic nerve blockade, either presurgically (group 2) or postsurgically (group 3). SETTING: Harborview Medical Center operating rooms and orthopedic floors. OUTCOME MEASURES: Morphine use over 24 hours, visual analogue scale pain scores, and sciatic nerve blockade duration. RESULTS: In the absence of sciatic nerve blockade, initial postoperative pain was marked, even with a mean recovery room dose of intravenous morphine more than 30 mg. Sciatic nerve blockade with bupivacaine had a mean duration of 14 hours and substantially reduced pain for the first 24 postoperative hours. Presurgical blockade confers no advantage over postsurgical blockade. CONCLUSION: Sciatic nerve blockade confers significant benefit over morphine alone for analgesia after open repair of calcaneus fractures. Postsurgical sciatic nerve blockade provides the longest possible postoperative block duration.
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