Blood transfusion rates and predictors following geriatric hip fracture surgery

Background: Postoperative blood product transfusions in elderly hip fracture patients cause concern for morbidity and mortality. The purpose of this study was to identify predictors and short-term sequelae of postoperative transfusion following geriatric hip fracture surgery. Methods: We queried the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) to identify geriatric (⩾65 years) patients who sustained operative femoral neck, intertrochanteric, and subtrochanteric hip fractures in 2016. Multivariate regression was used to determine risk-adjusted odds ratios (OR) of associated perioperative risk factors and sequelae of postoperative transfusion. Results: In total, 8416 geriatric hip fracture patients were identified of whom 28.3% had documented postoperative transfusion. In multivariate analysis, age (OR 1.03 [1.02–1.04], p < 0.001), preoperative anaemia (OR 4.69 [3.99–5.52], p = 0.001), female sex (OR 1.61 [1.39–1.87], p < 0.001), lower BMI (OR 0.97 [0.96–0.98], p < 0.001), American Society of Anesthesiologists (ASA) classification (OR 1.14 [1.01–1.27], p = 0.031), COPD (OR 1.30 [1.06–1.59], p = 0.011), hypertension (OR 1.17 [1.01–1.35], p = 0.038), increased OR time (OR 1.02 [1.01–1.03], p < 0.001), and intertrochanteric (OR 2.99 [2.57–3.49], p < 0.001) and subtrochanteric femur fractures (OR 5.07 [3.84–6.69], p < 0.001) were independent risk factors for receiving postoperative blood transfusion. Patients with postoperative transfusion had a significantly higher risk-adjusted 30-day mortality (8.4% vs. 6.4%, OR 1.29 [1.02–1.64], p = 0.035), hospital readmission rate (9.4% vs. 7.7%, OR 1.27 [1.04–1.55], p = 0.018), and total hospital LOS (7.3 vs. 6.3 days, p < 0.001). Conclusions: Postoperative transfusion is a common occurrence in geriatric fragility hip fractures with multiple risk factors. Careful preoperative planning and multidisciplinary management efforts are warranted to reduce use of postoperative transfusions.