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.
Results: Ablation procedure was succesful.
Conclusions: This unique case report highlights the role of high-density mapping in the identification of critical isthmus and management of macro-reentrant tachycardia in complex situations such as the presence of multiple leads in the chamber.
Keywords: Critical isthmus; High density mapping; Right atrial tachycardia.
© 2022 The Author(s). Published by IMR Press.