Key result
PVI suppresses swallowing-induced AT for at least 2 years.
Why the study?
Swallowing-induced atrial tachycardia (SIAT) is a rare arrhythmia with unclear mechanisms and limited data on the effectiveness of cardiac vagal nerve denervation by pulmonary vein isolation (PVI).
Case Report (n=1)
Answers are grounded in this paper and cite their sources.
Hypothesis-generating for PVI in swallowing-induced atrial tachycardia; requires prospective studies to confirm durable autonomic effects.
Swallowing-induced atrial tachycardia (SIAT) is a relatively rare arrhythmia. A 56-year-old woman was admitted to treat atrial tachycardia that occurs by not only eating and drinking but also yawning. Both the right and left upper pulmonary veins were suspected as the earliest activation site of the tachycardia and the abnormal activation of ectopies themselves were suppressed after pulmonary vein isolation (PVI). In a 24-hour Holter electrocardiogram, the HF component of the analysis of heart rate variability was suppressed both at 1 day and at 2 years after ablation. In this case, cardiac vagal nerve denervation by PVI was effective for SIAT.
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Yamaguchi et al. (2021) conducted a case report in Swallowing-induced atrial tachycardia (n=1). Pulmonary vein isolation vs. Pre-ablation baseline was evaluated on Suppression of atrial tachycardia and high-frequency component of heart rate variability. Pulmonary vein isolation effectively suppressed swallowing-induced atrial tachycardia and decreased the high-frequency component of heart rate variability for at least 2 years.
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