Key result
Pacing-guided 3D mapping and cryoablation successfully eliminates junctional ectopic tachycardia without 1-year recurrence.
Why the study?
The idiopathic form of junctional ectopic tachycardia in a structurally normal heart is rare and often resistant to antiarrhythmic drug therapy.
Does cryoablation at the wavefront collision site using atrial overdrive pacing safely terminate idiopathic junctional ectopic tachycardia?
Case Report (n=1)
No
Does cryoablation at the wavefront collision site using atrial overdrive pacing safely terminate idiopathic junctional ectopic tachycardia?
Answers are grounded in this paper and cite their sources.
A novel technique utilizing 3D mapping, atrial overdrive pacing, and cryoablation at the wavefront collision site offers a safe and successful approach for terminating idiopathic junctional ectopic tachycardia.
Key Teaching Points•The idiopathic form of junctional ectopic tachycardia (JET) in a structurally normal heart is rare and often resistant to antiarrhythmic drug therapy.•Utilization of 3-dimensional mapping, atrial overdrive pacing, and cryoablation can be used for successful ectopic localization, arrhythmia identification, and ablation of the junctional ectopic foci.•Atrial pacing at a cycle length faster than the JET allows for wavefront propagation mapping.•Cryoablation at the wavefront collision site can result in safe and successful termination of JET. •The idiopathic form of junctional ectopic tachycardia (JET) in a structurally normal heart is rare and often resistant to antiarrhythmic drug therapy.•Utilization of 3-dimensional mapping, atrial overdrive pacing, and cryoablation can be used for successful ectopic localization, arrhythmia identification, and ablation of the junctional ectopic foci.•Atrial pacing at a cycle length faster than the JET allows for wavefront propagation mapping.•Cryoablation at the wavefront collision site can result in safe and successful termination of JET.
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Dragisic et al. (2022) conducted a case report in Junctional ectopic tachycardia (n=1). Cryothermal ablation with 3-dimensional wavefront propagation mapping was evaluated on Termination of junctional ectopic tachycardia and restoration of normal sinus rhythm. Cryoablation guided by 3-dimensional wavefront propagation mapping during atrial overdrive pacing successfully terminated junctional ectopic tachycardia with no recurrence at 1 year.
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