28th February 2024

A 75-year-old man on the cardiology ward complains of new onset palpitations, muscle weakness and cramps.

A 75-year-old man on the cardiology ward complains of new onset palpitations, muscle weakness and cramps. His ECG results showed small T waves, with prominent U waves and a prolonged PR interval. He was recently given a diagnosis of heart failure. His potassium on a VBG is 2.7 (normal value: 3.5 – 5 mmol/L).

Which of the following drugs could have contributed to the disruption in his electrolyte levels?