Question

An 80-year-old man was treated for ventricular arrhythmias. He presents 1 month later with joint pain. He also has an unusual mask-like rash over his face and body. Discontinuation of drug therapy causes the symptoms to abate. What drug was most likely administered to this patient?

1 Tocainide
2 Quinidine
3 Procainamide
4 Phenytoin
5 Propranolol

Answer 1

The drug most likely administered to this patient is Procainamide. It is a potassium channel blocker that is commonly used to treat ventricular arrhythmias and can cause joint pain and a mask-like rash.

Step-by-step explanation:

The drug most likely administered to this patient is Procainamide. It is a potassium channel blocker that is commonly used to treat ventricular arrhythmias. One of the side effects of procainamide is joint pain. Additionally, procainamide can cause a rash over the face and body, known as a mask-like rash.