• Hyeon Ju Shin, Jong Hun Kim, Seung-Beom Han, Jong Hoon Park, and Woo Young Jang.
• Department of Anesthesiology and Pain Medicine, Korea University College of Medicine.
• Medicine (Baltimore). 2020 Aug 28; 99 (35): e21897.

AbstractAllogeneic red blood cell transfusion (ABT) is 1 of the poor prognostic factors for morbidity and mortality in patients with hip fracture, particularly among elderly patients. This study aimed to investigate the risk factors for ABT and 1-year mortality in elderly patients undergoing surgery for femoral neck fracture.A total of 225 elderly patients who underwent femoral neck fracture surgery between May 2013 and November 2015 at a tertiary medical center were retrospectively recruited. Medical records were analyzed.The median patient age was 80 years and 28.4% were men. A total of 113 patients received ABT (50.2%). Multivariate logistic regression analysis showed that female sex (odds ratio [OR] 2.606, 95% confidence interval [CI] 1.283-5.295, P = .008), malignancy (OR 5.098, 95% CI 1.725-15.061, P = .003), chronic kidney disease stage ≥ 3 (OR 3.258, 95% CI 1.603-6.622, P = .001), and anemia (hemoglobin < 12 g/dL) (OR 4.684, 95% CI 2.230-9.837, P < .001) were significantly associated with ABT. The 1-year mortality rate after surgery was 15.1%. Male sex (OR 2.477, 95% CI 1.101-5.575, P = .028), ABT (OR 2.367, 95% CI 1.036-5.410, P = .041), and intensive care unit admission (OR 5.564, 95% CI 1.457-21.249, P = .012) were significantly associated with 1-year mortality.In this study, underlying comorbidities such as chronic kidney disease and malignancy were associated with ABT. Furthermore, ABT was a significant independent risk factor for 1-year mortality. These findings suggest that underlying comorbidities and the need for ABT should be considered in the risk assessment of elderly patients with femoral neck fracture to improve the outcomes after surgery.

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