Background: A 61-year-old male with Steinert Dystrophy and prior history of cardiac implantable device complained of highly symptomatic right atrial tachycardia. Unresponsive to pharmacological therapy. Methods: The patient underwent catheter ablation procedure aided by high-density mapping. https://www.jmannino.com/special-deal-A-Magazine-Curated-By-Sacai-quick-pick/