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Effect on Hospital Length of Stay of Tourniquet Use During Internal Fixation of Ankle Fractures: Randomized Controlled Trial
Authors:Julius Sim  Natalie Grocott  Haroon Majeed  Damian McClelland
Affiliation:1. Professor, Institute for Primary Care and Health Sciences, Keele University, Staffordshire, United Kingdom;2. Research Physiotherapist, University Hospitals of North Midlands, Royal Stoke University Hospital, Staffordshire, United Kingdom;3. Orthopaedic Surgeon, University Hospitals of North Midlands, Royal Stoke University Hospital, Staffordshire, United Kingdom
Abstract:Approximately 50% of ankle fractures require internal fixation. A tourniquet is often used to create a bloodless operative field, but its effect on hospital length of stay (LOS) is unclear. This article reports a parallel-group observer-blinded randomized trial of the effect of tourniquet use on LOS. One hundred eighty-eight adult patients requiring internal fixation of ankle fracture were randomized to surgery with or without a tourniquet. LOS was analyzed on intention-to-treat principles using Poisson regression. As a secondary outcome, duration of operation was analyzed by analysis of covariance. Mean LOS was 1.79 ± 1.50 days in the tourniquet group and 1.65 ± 1.11 days in the no-tourniquet group. The covariate-adjusted rate ratio for LOS (reference group: no tourniquet) was 1.084 (95% confidence interval 0.871, 1.348; p?=?.470). Sensitivity analyses (unadjusted intention-to-treat analysis and as-treated analysis) gave similar nonsignificant results. The covariate-adjusted mean difference in duration of operation was 3.03 minutes (95% confidence interval –4.96, 11.02; p?=?.455), favoring the tourniquet group; sensitivity analyses again gave similar results. Adverse events did not differ significantly between groups. In conclusion, the use of a tourniquet during internal fixation does not significantly influence hospital LOS, of which preinjury medical condition of the patient appears to be the most important determinant.
Keywords:1  ankle fracture  length of stay  operative fixation  randomized controlled trial  tourniquet
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