Eva has been using a certain Class 1A antiarrhythmic drug for a very long time. However, over the past few weeks, Eva has lost a lot of weight and has been experiencing severe episodes of nausea and diarrhea. She has also developed a scaly red skin rash. She visits Dr. Redford's clinic for a consultation. Dr. Redford studies her electrocardiogram (ECG) and notices that the durations of the PR, QRS, and QT waves in Eva's heart are much longer than usual. He advises Eva to stop taking the drug. Which of the following drugs has Eva most likely been using?
A. Procainamide
B. Propranolol
C. Sotalol
D. Amiodarone
Answer: A
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