Blunt Abdominal Trauma in the Emergency Department: Initial Evaluation and Evidence-Based Surgical Decision-Making

Blunt abdominal trauma is a frequent and potentially lethal condition in emergency medicine, associated with substantial morbidity and mortality worldwide. It occurs in up to one third of severely injured patients, with the liver and spleen being the most commonly affected organs. Motor vehicle collisions remain the predominant mechanism, followed by falls, pedestrian trauma, assaults, and sports-related injuries. The biomechanical forces involved, particularly deceleration, compression, and crush injury, determine the resulting organ damage and should guide early diagnostic suspicion. Hemorrhage is the most critical immediate consequence, while hollow viscus and mesenteric injuries carry high mortality when diagnosis is delayed. Initial emergency assessment must follow the ABCDE trauma framework, integrating airway, breathing, circulation, neurologic status, and exposure rather than focusing on the abdomen in isolation. Hemodynamic instability is the central factor guiding management: unstable patients with positive FAST findings require urgent laparotomy, whereas stable patients should undergo contrast-enhanced computed tomography for detailed lesion characterization. Clinical examination and laboratory studies remain important but are insufficient alone, particularly because abdominal findings may be subtle or absent in patients with altered mental status, polytrauma, or delayed injury presentation. Repeated examination, serial laboratory assessment, and repeat imaging when indicated are therefore essential. Management decisions depend on physiologic status, injury pattern, and institutional resources. Non-operative treatment has expanded considerably for splenic, hepatic, and selected renal injuries, supported by imaging surveillance and angioembolization. In contrast, bowel, mesenteric, pancreatic, diaphragmatic, and intraperitoneal bladder injuries more often require surgery. Overall, modern care emphasizes early recognition, balanced resuscitation, selective organ-preserving strategies, and timely operative intervention when instability, peritonitis, or ongoing hemorrhage are present.