PMID: 25760198Mar 12, 2015Paper

The effect of body mass index on posttraumatic transfusion after pelvic trauma

The American Surgeon
Justin E RichardsPhilip J Kregor

Abstract

The impact of body mass index (BMI) on posttraumatic blood transfusion after pelvic trauma is not well known. We conducted a retrospective review of trauma registry data over a 5-year period. Patients were stratified by BMI as normal: less than 25 kg/m(2), overweight: 25 to 29.9 kg/m(2), obese: 30 to 39.9 kg/m(2), and morbidly obese: 40 kg/m(2) or greater. Fractures were identified as "likely to receive transfusion" based on literature. Multivariable logistic regression modeling evaluated the relationship between BMI and initial posttraumatic transfusion. A second regression model was created to test the effect of BMI after adjusting for fractures "less likely to receive transfusion." Sixty-six of 244 patients (27.3%) received transfusion (mean: 1.1 ± 2.3 units). Morbid obesity was associated with transfusion (less than 55.6 vs 24.8%; P < 0.05) and units of total blood transfused (2.2 ± 2.9 vs 1.0 ± 2.2 mL; P < 0.05). The average age of patients who received a blood transfusion was significantly older compared with patients who did not receive a transfusion (45.4 ± 18.8 vs 36.1 ± 16.1 years; P < 0.05). After adjusting for potential confounders, morbid obesity was a significant risk factor for transfusion (odds ratio [OR], 4.1; ...Continue Reading

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