Abstract
BackgroundHip fracture is a common health problem in the elderly that is associated with increased mortality. Acute kidney injury (AKI) is a frequent complication in elderly patients undergoing surgery and is associated with the clinical outcome. We evaluated the incidence and risk factors of AKI in elderly patients undergoing hip fracture surgery and the impact of AKI on short- and long-term clinical outcomes.MethodsWe performed a retrospective cohort study of 450 elderly patients who underwent hip fracture surgery between January 2010 and December 2012. We defined AKI according to the Acute Kidney Injury Network (AKIN) criteria and investigated the effect of AKI on the duration of hospital stay and in-hospital and long-term mortality.ResultsOf the 450 patients, 95 (21.1%) developed AKI during hospitalization and 178 (39.6%) died, with a mean follow-up of 3.6 ± 1.0 years. The baseline serum creatinine level, use of angiotensin-converting enzyme inhibitors or angiotensin-II receptor antagonists, red blood cell transfusion volume, and history of coronary artery disease were independent risk factors for AKI. Patients with AKI during hospitalization had significantly longer hospital stays and higher in-hospital and long-term mortality than those without AKI. Multivariate analysis revealed that age, history of coronary artery disease, serum albumin level, and AKI were independent predictors of long-term mortality.ConclusionsAKI is a frequent complication in elderly patients undergoing hip fracture surgery and is independently associated with increased in-hospital and long-term mortality.
Highlights
Hip fracture is a major health problem in the elderly that is associated with significantly increased morbidity and mortality [1,2,3,4,5,6,7,8]
Multivariate analysis revealed that age, history of coronary artery disease, serum albumin level, and Acute kidney injury (AKI) were independent predictors of long-term mortality
AKI is a frequent complication in elderly patients undergoing hip fracture surgery and is independently associated with increased in-hospital and long-term mortality
Summary
Hip fracture is a major health problem in the elderly that is associated with significantly increased morbidity and mortality [1,2,3,4,5,6,7,8]. Acute kidney injury (AKI) is a common morbidity in the hospitalized elderly and is a frequent complication after hip fracture surgery. Electrolyte imbalance and chronic kidney disease are related to the in-hospital mortality, and preoperative renal dysfunction is associated with long-term mortality in elderly patients with hip fracture [7,12,14,15,16,17,18,19,20]. Acute kidney injury (AKI) is a frequent complication in elderly patients undergoing surgery and is associated with the clinical outcome. We evaluated the incidence and risk factors of AKI in elderly patients undergoing hip fracture surgery and the impact of AKI on short- and long-term clinical outcomes
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