2.
Jannet presents with 2 days of abdominal pain, nausea, and loss of appetite. She tells you that today she has vomited a couple of times. She is normally well. On examination, he has slightly abdominal distension. She has not opened her bowels for 4 days. She had a past history of bowel cancer which was treated with surgery and chemotherapy
Question 2
What is the most important investigation to help you establish your provisional diagnosis?