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': 'Compartment syndrome is confirmed at pressure above \nSelect and explain. \nA. 30 mm Hg, B. 40 mm Hg, C. 50 mm Hg, D. 35 mm Hg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) 30 mm HgRef Bailey and Love 27th edition Page 408Compartment Syndrome:* MC cause - Fracture (70%)* Other causes:# Soft tissue contusion# Bleeding disorders# Circumferential Burns# Post ischemic swelling# Tight Casts/Dressings# IV fluids extravasation* C/F- Pain on passive stretch (Early Sign), Late sign (pulselessness)* Absolute pressure >30mmHg or Pressure Gradient (Diastolic pressure - Compartment Syndrome) is less than Equal to 30mmHg is Compartment syndrome.', 'role': 'assistant'}]