Experience sharing of a case of dual atrioventricular nodal non-reentrant tachycardia: Case report.

RATIONALE: Tachycardia is a common arrhythmia in clinical practice, and its pathogenesis is mostly related to reentry. However, there are also a few tachycardia that are not related to reentry. Actively clarifying the pathogenesis of these non-reentry related tachycardia is of great significance for its treatment.

PATIENT CONCERNS: A 55-year-old female patient presented with recurrent palpitations with a fastest heart rate of 180 beats/minute 10 years ago.

DIAGNOSIS: Dual atrioventricular nodal non-reentrant tachycardia (DAVNNT).

INTERVENTIONS: DAVNNT can be cured by radiofrequency ablation of atrioventricular nodal slow path modification.

OUTCOMES: The tachycardia has stopped.

CONCLUSION

DAVNNT is a rare disease in clinical practice. Its characteristic is not reentration-related arrhythmias, but the phenomenon of increased heart rate caused by electrical conduction down the double pathway of atrioventricular nodal tract and subsequent pathway. Electrophysiological examination helps to clarify the diagnosis and pathogenesis, and catheter ablation can cure the disease.