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May 16, 2026JACC Case ReportsOpen Access

Dual AV Nodal Non-Reentrant Tachycardia as a Suspected Cause of Tachyarrhythmia-Induced Cardiomyopathy

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Key result

Slow pathway ablation improves EF in a case of tachyarrhythmia-induced cardiomyopathy from dual AV nodal non-reentrant tachycardia.

  • n=1

Population

A 69-year-old female patient with HFrEF and tachycardia with unusual grouped beating

Comparison

Slow pathway ablation

Design

Case report

Authors

ACAnthony CholaghKEKareem ElewaVPVaidahi Patel

Discussion

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Overview

May warrant EP evaluation for DAVNNT in refractory tachycardia with HFrEF; leaves open broader prevalence and ablation outcomes.

Key Points

  • To highlight the impact of identifying dual AV nodal non-reentrant tachycardia in managing tachyarrhythmia-induced cardiomyopathy.
  • Case report of a 69-year-old female with tachycardia and heart failure
  • Electrophysiology study performed to identify the tachyarrhythmia
  • Slow pathway ablation conducted after diagnosis
  • Post-ablation, the patient showed significant improvement in ejection fraction
  • Palpitations resolved following the procedure
  • Correct identification of the rhythm was crucial for appropriate management

Study Design

Type

Case Report (n=1)

Structured PICO

P
Population
1 69-year-old female patient with heart failure with reduced ejection fraction and palpitations, initially presumed secondary to atrial fibrillation.
I
Intervention
Electrophysiology study and slow pathway ablation
O
Outcome
Improvement in ejection fraction and palpitations

This case highlights the importance of correctly identifying dual AV nodal non-reentrant tachycardia as a reversible cause of tachyarrhythmia-induced cardiomyopathy.

Cite This Study

Cholagh et al. (2026) conducted a case report in Dual AV Nodal Non-Reentrant Tachycardia and Tachyarrhythmia-Induced Cardiomyopathy (n=1). Slow pathway ablation was evaluated on Improvement in ejection fraction and palpitations. Slow pathway ablation for dual AV nodal non-reentrant tachycardia in a 69-year-old female with tachyarrhythmia-induced cardiomyopathy significantly improved her ejection fraction and palpitations.

synapsesocial.com/papers/6a080ed1a487c87a6a40dafahttps://doi.org/10.1016/j.jaccas.2026.108336
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A case of dual atrioventricular nodal nonreentrant tachycardia: An unusual cause of tachycardia‐induced cardiomyopathy2015 · 7 citations
  2. 2Tachycardiomyopathy Secondary to Nonreentrant Atrioventricular Nodal Tachycardia: Recovery After Slow Pathway Ablation2007 · 31 citations
  3. 3Atrioventricular Nodal Reentrant Tachycardia Mimicking A-flutter and Presenting as Tachycardia-Induced Cardiomyopathy: A Case Report2026
  4. 4232: DOUBLE JEOPARDY: A CASE OF DUAL TACHYCARDIA2023
  5. 5Unusual cause of cardiomyopathy in a young woman2021