A 72 year old woman presents with severe, generalized abdominal pain for 1 hour, in association with nausea, vomiting and watery diarrhea.

Her medical history is significant only for well controlled hypertension for 5 years; she is currently on therapy with losartan only.

A full blood count is significant for a leukocyte count of 15,000/mm3 with 90% neutrophils, while serial ECGs are only significant for atrial fibrillation.

A chest x-ray, serum amylase, and serum lipase levels are found to be normal.