Reentrant atrial tachycardia originating from the superior vena cava

Kazuhiko Okamoto, Hiroyuki Ito, Fumiaki Kuma, Akihiro Koike, Eimei Shimoike, Norihiro Ueda, Toru Maruyama, Yoshikazu Kaji, Takehiko Fujino

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Abstract

A 52-years old man with a previous pericardiotomy for idiopathic constrictive pericarditis underwent catheter ablation for drug-resistant atrial tachycardia (AT). The mechanism of the AT was considered as reentry because of resetting response and the entrainment phenomenon during AT. We introduced a 64-electrode basket catheter into the superior vena cava (SVC) during AT to obtain precise mapping. A fractionated potential preceding local atrial electrogram was recorded in the SVC. The earliest activation site of the potential was located at the anterior aspect of the SVC, 2 cm above the SVC-right atrium junction determined fluoroscopically. The fractionated potential at this site preceded the onset of the P wave by 115 msec. Radiofrequency catheter ablation at this site eliminated the tachycardia. At 6 months follow-up, the patient is free of AT. Reentrant AT involving the SVC is a candidate of RF ablation. Multielectrode basket catheter is useful for a detailed mapping of the SVC.

Original languageEnglish
Pages (from-to)203-208
Number of pages6
JournalJournal of Interventional Cardiac Electrophysiology
Volume8
Issue number3
DOIs
Publication statusPublished - Jun 2003

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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    Okamoto, K., Ito, H., Kuma, F., Koike, A., Shimoike, E., Ueda, N., Maruyama, T., Kaji, Y., & Fujino, T. (2003). Reentrant atrial tachycardia originating from the superior vena cava. Journal of Interventional Cardiac Electrophysiology, 8(3), 203-208. https://doi.org/10.1023/A:1023969205833