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Review Question - QID 108177

Antiarrhythmics Class I - Na+ Channel Blockers Class IA (disopyramide, quinidine, and procainamide) QID: 108177 (M1.CV.17.4698)
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QID 108177 (Type "108177" in App Search)
A 60-year-old woman with a history of atrial arrhythmia arrives in the emergency department with complaints of tinnitus, headache, visual disturbances, and severe diarrhea. The patient is given oxygen by nasal cannula. ECG leads, pulse oximeter and an automated blood pressure cuff are applied. The patient suddenly faints. Her ECG indicates the presence of a multifocal ventricular tachycardia with continuous change in the QRS electrical axis. Which of the following drugs is most likely responsible for this patient's symptoms?
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