Abstract
A three-dimensional (3D) mapping system is safe and effective for catheter ablation
of incisional atrial tachycardia (IAT). Prolongation of the PR interval is occasionally
observed after this procedure. Although a first-degree atrioventricular block is typically
benign, an excessively prolonged PR interval can indicate a worse prognosis. Currently,
a method to predict the PR interval after ablation therapy for IAT is lacking. We
report the case of a 70-year-old woman with paroxysmal atrial tachycardia, in which
our maneuver using a 3D mapping system and the electrophysiological findings enabled
us to preoperatively predict the post-ablation PR interval. We believe that this method
is useful for determining treatment strategies for IAT.
Learning objective
Three-dimensional (3D) mapping systems can clearly visualize macro-reentrant circuits
and enable the creation of precise ablation lines. When creating ablation lines for
incisional atrial tachycardia, attention should be paid to the prolongation of the
PR interval, because an excessively prolonged PR interval may indicate a worse prognosis.
Herein, we have presented a method for predicting the post-ablation PR interval using
a 3D mapping system and electrophysiological findings.
Keywords
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References
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Article info
Publication history
Published online: May 24, 2022
Accepted:
April 25,
2022
Received in revised form:
April 14,
2022
Received:
February 14,
2022
Identification
Copyright
© 2022 Japanese College of Cardiology. Published by Elsevier Ltd. All rights reserved. All rights reserved.
