• Dallas P Seitz, Sudeep S Gill, Chaim M Bell, Peter C Austin, Andrea Gruneir, Geoff M Anderson, and Paula A Rochon.
• Department of Psychiatry, Queen's University, Kingston, Ontario, Canada.
• J Am Geriatr Soc. 2014 Nov 1;62(11):2102-9.

ObjectivesTo examine the association between anesthetic technique and postoperative complications in older adults with dementia undergoing hip fracture surgery.DesignPopulation-based, retrospective cohort study.SettingOntario, Canada.ParticipantsAll older adults with dementia who underwent surgery for hip fracture repair in Ontario, Canada, between April 1, 2003 and March 31, 2011.MeasurementsThe baseline characteristics of individuals who received general anesthesia (GA) and regional anesthesia (RA) were compared. Individuals who received GA were matched to similar individuals who received RA using propensity scores to control for confounding, and their outcomes compared, including 30-day mortality, intensive care unit (ICU) admissions, specific postoperative medical complications, and hospital length of stay (LOS).ResultsIn the 6,135 matched pairs, there was no statistically significant difference in postoperative 30-day mortality (GA, 11.3%; RA, 10.8%, P = .44). There were no statistically significant differences in the rates of specific postoperative medical complications or LOS in the two anesthetic groups, but GA was associated with higher rates of ICU admissions (6.1% vs 4.2%, P < .001).ConclusionFor older adults with dementia undergoing hip fracture surgery, GA and RA are associated with similar rates of most perioperative adverse events. Further studies are required to determine the optimal methods of providing anesthesia and perioperative care for older adults with dementia undergoing surgical procedures.© 2014, Copyright the Authors Journal compilation © 2014, The American Geriatrics Society.

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