The effect of body mass index on trauma severity and prognosis in trauma patients.

Background: As in the rest of the world, the prevalence of obesity in Turkey has been increasing in recent years and has become a major public health issue. Although many trials have been conducted to study the effects of obesity on internal diseases, there are few studies investigating the effects of obesity on prognosis of trauma patients. The present study analyzed the effects of body mass index (BMI) on trauma severity and prognosis in trauma patients.
Methods: This study was prospectively conducted with trauma patients older than 15 years of age who presented at the Dicle University Faculty of Medicine emergency medicine department trauma unit between June 1, 2013 and May 31, 2014. Patients were grouped into high-energy trauma and low-energy trauma groups based on trauma severity. In addition, 4 groups were made according to BMI value (kg/m2). Group I was defined as BMI <25 (normal weight). Group II patients had BMI of 25-29.9 (overweight). Group III had BMI of 30-34.9 (obese), and Group IV was made up of patients with BMI ≥35 (morbidly obese).
Results: Comparison of whole patient population for inter-group differences showed significant differences between rate of head injury, thoracic injury, extremity injury, multitrauma, clinic admission rate, and mortality rate (p<0.001). No significant difference was observed between groups in abdominal injury rate (p=0.347).
Conclusion: Clinic admission rate, length of intensive care unit stay, mortality rate, multitrauma rate, and injury severity score increased in proportion to greater BMI.