Cone JT, Benjamin ER, Alfson DB, et al. - Researchers examined how BMI affects the outcomes following severe isolated blunt chest trauma. In this TQIP database study, 28,820 patients with severe isolated blunt chest injury (chest AIS 3–5, extrathoracic AIS < 3) were included. According to BMI, classification of these patients was done: underweight (BMI < 18.5), normal weight (18.5–24.9), overweight (25.0–29.9), obesity class 1 (30.0–34.9), obesity class 2 (35.0–39.9) and obesity class 3 (≥ 40.0). Observations revealed worse mortality among underweight and obesity class 2 and 3 patients than normal weight patients. They indicated an independent association of obesity with an increased risk of pulmonary and VTE complications.