This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'Most common organ involved in blunt injury to the abdomen: \nSelect and explain. \nA. Spleen, B. Liver, C. Intestines, D. Kidney', 'role': 'user'}, {'content': 'Answer: A \nExplanation: - Most common organ involved in blunt injury to the abdomen - spleen > liver - Most common organ involved in penetrating trauma - liver > stomach > small intestine - Most common organ involved in gun shot wound to abdomen - small intestine - Most commonly injured bowel in blunt trauma injury to the abdomen - jejunum - Most commonly injured structure in seat belt injury - mesentery - Investigation done in blunt trauma injury FAST (stable /unstable) Ultrasound done within 2-4 minutes Assess 4P (1. pericardial sac, 2. perihepatic region, 3. perispleenic region, 4. Pelvis) - Gold standard invasion in stable patient in blunt trauma abdomen - CECT', 'role': 'assistant'}]