20th July 2020

A 60-year-old man is brought into A&E with constant severe abdominal pain

A 60-year-old man is brought into A&E with constant severe abdominal pain, starting 4 hours ago. He was previously admitted for an episode of acute pancreatitis in the last year. On examination, he has a temperature of 37.9 C and epigastric tenderness with guarding. He is a regular smoker and consumes 25 units of alcohol a week. A CT scan is performed but does not show any significant change from his previous scan.

Select the SINGLE most appropriate investigation from the list below. Select ONE option only.