The patient was taken urgently to interventional radiology where the superior mesenteric artery was selectively catheterized.
There was an abrupt cutoff just distal to the first few branches of the SMA, characteristic of an embolus.
The catheter could be advanced through the clot and peripheral mesenteric vessels could be visualized. A 500,000u bolus of urokinase was delivered through the proximal SMA, and a continuous infusion of 100,000u per hour was delivered for the next 15 hours.
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