This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'In immediate postoperative hysterectomy a patient develops leakage of urine. What is the most likely cause \nSelect and explain. \nA. Urethral injury, B. Bladder injury, C. Overflow incontinence, D. Stress urinary incontinence', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Immediate postoperative leakage of urine develops due to drainage of peritoneal collection of urine. Both bladder and ureteral defects can cause leakage of urine into the peritoneal cavity. Bladder injury is more common than ureteral injury with incidence of 1%. The other presentation may be abdominal pain and ascites.\nOverflow incontinence is because of detrusor underactivity and is usually not a complication of hysterectomy\nStress urinary incontinence is because of urethral hypermobility or intrinsic sphincter deficiency, the causes are usually insufficient support from pelvic floor muscles and neuromuscular damage and hence is uncommon with hysterectomy', 'role': 'assistant'}]