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12564 Medicine

A 75.year old woman with chronic atrial fibrillation presented to the hospital with a 2-day of colicky abdominal pain. The physical examination revealed hypoactive bowel sounds and diffuse abdominal tenderness. Laboratory tests showed a white cell count of 19,400 per cubic millimeter with 92% neutrophils, a blood urea nitrogen level of 42 mg per deciliter (15 gmol per liter) and a serum creatinine level of 3.0 mg per deciliter (267 gmol per liter). The investigation of choice would be

AContrast enhanced CT abdomen
BDuplex Doppler of the abdomen
CMRI scan of the abdomen
DUSG of abdomen
Medicine
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