Implementing the WHO Safe Surgery Checklist may reduce morbidity, length of stay and mortality, although many questions remain.

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• Arvid Steinar Haugen, Eirik Søfteland, Stian K Almeland, Nick Sevdalis, Barthold Vonen, Geir E Eide, Monica W Nortvedt, and Stig Harthug.
• *Department of Anesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway †Department of Clinical Science, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway ‡Department of Surgery, Førde Central Hospital, Førde, Norway §Centre for Patient Safety and Service Quality at the Department of Surgery and Cancer, Imperial College, London, United Kingdom ¶Department of Surgery, Nordland Hospital, Bodø, Norway ‖Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway **Department of Global Public Health and Primary Care, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway ††Centre for Evidence Based Practice, Bergen University College, Bergen, Norway ‡‡Department of Research and Development, Haukeland University Hospital, Bergen, Norway.
• Ann. Surg.. 2015 May 1;261(5):821-8.

ObjectivesWe hypothesized reduction of 30 days' in-hospital morbidity, mortality, and length of stay postimplementation of the World Health Organization's Surgical Safety Checklist (SSC).BackgroundReductions of morbidity and mortality have been reported after SSC implementation in pre-/postdesigned studies without controls. Here, we report a randomized controlled trial of the SSC.MethodsA stepped wedge cluster randomized controlled trial was conducted in 2 hospitals. We examined effects on in-hospital complications registered by International Classification of Diseases, Tenth Revision codes, length of stay, and mortality. The SSC intervention was sequentially rolled out in a random order until all 5 clusters-cardiothoracic, neurosurgery, orthopedic, general, and urologic surgery had received the Checklist. Data were prospectively recorded in control and intervention stages during a 10-month period in 2009-2010.ResultsA total of 2212 control procedures were compared with 2263 SCC procedures. The complication rates decreased from 19.9% to 11.5% (P < 0.001), with absolute risk reduction 8.4 (95% confidence interval, 6.3-10.5) from the control to the SSC stages. Adjusted for possible confounding factors, the SSC effect on complications remained significant with odds ratio 1.95 (95% confidence interval, 1.59-2.40). Mean length of stay decreased by 0.8 days with SCC utilization (95% confidence interval, 0.11-1.43). In-hospital mortality decreased significantly from 1.9% to 0.2% in 1 of the 2 hospitals post-SSC implementation, but the overall reduction (1.6%-1.0%) across hospitals was not significant.ConclusionsImplementation of the WHO SSC was associated with robust reduction in morbidity and length of in-hospital stay and some reduction in mortality.

This article appears in the collection: Surgical safety checklists.

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