Key result
Cryoablation led to complete resolution of tachycardia-mediated cardiomyopathy in two adult males with incessant dual atrioventricular nodal nonreentrant tachycardia.
Why the study?
Does cryoablation resolve tachycardia-mediated cardiomyopathy in patients with incessant dual atrioventricular nodal nonreentrant tachycardia?
Case Report (n=2)
Does cryoablation resolve tachycardia-mediated cardiomyopathy in patients with incessant dual atrioventricular nodal nonreentrant tachycardia?
Cryoablation is an effective treatment for incessant dual atrioventricular nodal nonreentrant tachycardia and can lead to complete resolution of associated cardiomyopathy.
May support cryoablation for incessant DAVNNT with cardiomyopathy in select patients; hypothesis-generating and requires prospective confirmation.
We describe two consecutive adult males with incessant dual atrioventricular nodal nonreentrant tachycardia and associated severe cardiomyopathy. After invasive diagnosis, this is the first published report showing the successful outcome of this rare tachycardia with effective cryoablation. Cryothermal lesions in the roof of the proximal coronary sinus and right midseptal area lead to complete resolution of the tachycardia-mediated cardiomyopathy in the mid-term follow-up of our patients.
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González‐Torrecilla et al. (2019) conducted a case report in Incessant dual atrioventricular nodal nonreentrant tachycardia and associated severe cardiomyopathy (n=2). Cryoablation was evaluated on Resolution of tachycardia-mediated cardiomyopathy. Cryoablation led to complete resolution of tachycardia-mediated cardiomyopathy in two adult males with incessant dual atrioventricular nodal nonreentrant tachycardia.
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