16th February 2025

A 55-year-old man attends the Outpatients Imaging department for a staging CT following recent diagnosis of colonic adenocarcinoma.

A 55-year-old man attends the Outpatients Imaging department for a staging CT following recent diagnosis of colonic adenocarcinoma. He deteriorates in the scanner, with features highly suggestive of anaphylaxis.

The medical emergency team is called, and he is treated with two doses of 0.5 mg adrenaline IM, 1.5 L Hartmann’s IV, 10 mg chlorphenamine PO. His condition then normalises, with HR 79, BP 132/75, sats 99% on room air, respiratory rate 17.

Which of the following management steps is LEAST appropriate?

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