14th August 2024

You attend an emergency call on the ward for a patient with seizures. The patient is a 63-year-old man

You attend an emergency call on the ward for a patient with seizures. The patient is a 63-year-old man who was admitted with left-sided pyelonephritis, which is being treated with IV ciprofloxacin. His background medical history includes hypertension, benign prostatic hyperplasia, and a previous gastric ulcer. He is known to have an excessive alcohol intake of 55 units per week, but he has never been hospitalised with a complication of alcohol intake previously.

His admission liver function tests were unremarkable. An urgent arterial blood gas demonstrates normal sodium but a low ionised calcium.

Which single medication is most likely to be contributing to this patient’s seizures?

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