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

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)


    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
    Issue number3
    Publication statusPublished - Jun 2003

    All Science Journal Classification (ASJC) codes

    • Cardiology and Cardiovascular Medicine
    • Physiology (medical)


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