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Rethinking strategies for blood transfusion in hip fracture patients.
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https://doi.org/10.1097/OI9.0000000000000083Abstract
OBJECTIVES: Most patients can tolerate a hemoglobin (Hgb) > 8 g per deciliter. In some cases, however, transfusion will delay physical therapy and hospital discharge. This study aims to review Hgb and transfusion data for a large volume of recent hip fracture patients in order to identify new opportunities for decreasing the length of hospital stay. Our hypotheses are that in some cases, earlier transfusion of more blood will be associated with shorter hospital stays, and that Hgb levels consistently decrease for more than 3 days postoperatively. DESIGN: Retrospective chart review. SETTING: Two academic medical centers with Geriatric Fracture Programs. PATIENTS: Data was collected from patients 50 years and older with hip fractures April 2015 and October 2017. INTERVENTION: Operative stabilization of the hip fractures according to standard of care for the fracture type and patient characteristics. Transfusion according to established standards. MAIN OUTCOME MEASUREMENTS: Electronic records were retrospectively reviewed for demographic information, Hgb levels, and transfusion events. RESULTS: One thousand fifteen patients with femoral neck or intertrochanteric hip fractures were identified. Eight hundred sixty met the inclusion criteria. The average length of hospital stay was 6.7 days. The mean patient age was 82 years. The average American Society of Anesthesiologists score was 2.9. The average Hgb level consistently decreased for 5 days postoperatively before beginning to increase on day 6. There was poor consistency between intraoperative Hgb levels and preoperative or postoperative Hgb levels. Three hundred sixty-eight (42.8%) patients were transfused an average of 1.9 (range 1-6) units. One hundred five patients required a transfusion on postoperative day (POD) 1: 72 received only 1 unit of blood: 36 (50%) of the 72 required a second transfusion in the following days, compared to 9 of 33 (27%) who received 2 units on POD 1 (χ2 = 3.8898; P < .05). Patients who received transfusions on POD 3 or later had an average length of stay >2.5 days longer than those who received a transfusion earlier (P = 0.005). CONCLUSIONS: Our findings do not support earlier transfusion of more blood. Although in some cases, there is an association between earlier transfusion of more blood and shorter hospital stay, routine transfusion of more blood would incur higher transfusion risks in some patients who would not otherwise meet criteria for transfusion. After hip fracture surgery, the Hgb usually decreases for 5 days and does not begin to increase until POD 6. This information will provide utility in the population health management of hip fracture patients. LEVEL OF EVIDENCE: Level III, Retrospective Cohort Study.
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