Key result
Mapping-guided radiofrequency ablation eliminates swallowing-induced atrial tachycardia with zero recurrence at 6 months.
Why the study?
Swallowing-induced atrial tachyarrhythmias are rare, difficult to induce and map, and resistant to antiarrhythmic medications, posing challenges for effective treatment.
Case Report (n=1)
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Supports targeted ablation for rare swallowing-induced atrial tachycardia; extends ECGI mapping techniques but leaves open validation in prospective cohorts.
We describe two cases of swallowing-induced tachyarrhythmias that were cured by radiofrequency ablation (RFCA) using a non-contact mapping system (NCMS). In both patients, tachyarrhythmias occurred during swallowing solids and liquids, and mapping and ablation of the arrhythmia using the NCMS was attempted during swallowing a rice ball. During a premature atrial contraction shortly after the swallow, the earliest endocardial breakthrough occurred at the right superior pulmonary vein (PV) ostium in Case 1 and at the left superior PV ostium and postero-inferior right atrium in Case 2. Guided by the NCMS catheter navigation system, the ablation catheter was easily and precisely positioned at a site where the earliest endocardial breakthrough occurred. RFCA at that site resulted in success and no recurrence or complications occurred during the follow-up in either patient.
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Tada et al. (2007) conducted a case report in Swallowing-induced atrial tachycardia (n=1). Radiofrequency ablation guided by noninvasive electrocardiographic imaging and high-density endocardial mapping was evaluated on Arrhythmia recurrence. Radiofrequency ablation guided by noninvasive electrocardiographic imaging and high-density endocardial mapping successfully eliminated swallowing-induced atrial tachycardia with no recurrence at 6 months.
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