

Dr. Natalie Marrero
Internal Medicine Resident
3 Podcasts on BackTable
Dr. Natalie Marrero is an internal medicine resident at the University of Miami in Miami, Florida.
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Episode # 439 • 25 Dec 2025
Atrial Fibrillation: Anti-Arrhythmic Drugs in the Management of Atrial Arrhythmias
CardioNerds (Dr. Colin Blumenthal, Dr. Kelly Arps, and Dr. Natalie Marrero) discuss anti-arrhythmic drugs in the management of atrial fibrillation and atrial flutter with electrophysiologist Dr. Andrew Epstein. We discuss two major classes of anti-arrhythmic drugs, class IC and class III, as well as digoxin. Dr. Epstein explains their mechanisms of action, indications and specific patient populations in which they would be particularly helpful, efficacy, adverse side effects, contraindications, and key drug-drug interactions. We also elaborate on defining clinical trials and their clinical implications. Given the large burden of atrial fibrillation and atrial flutter in our patient population and the high prevalence of anti-arrhythmic drug use, this episode is sure to be applicable to many practicing physicians and trainees. Audio editing by CardioNerds academy intern, Grace Qiu.
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