Radiofrequency Catheter Ablation for SinoatrialNode Reentrant Tachycardia
| Autor: | Yoshihiro Okamoto, Jun-ichi Nitta, Hideomi Fujiwara, Masahiko Goya, Kazuhiro Tanaka, Takeshi Mitsuhashi, Kazutaka Aonuma, Yoshito Iesaka, Hiroshi Amemiya, Masakazu Gotoh, Fumiaki Marumo, Akihiko Nogami, Yohkoh Soejima, Atsushi Takahashi, Michiaki Hiroe, Teiichi Yamane |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male Tachycardia medicine.medical_specialty Physiology Sinus tachycardia medicine.medical_treatment Tachycardia Sinoatrial Nodal Reentry Catheter ablation Electrocardiography Adenosine Triphosphate Internal medicine medicine Humans Sinus rhythm Aged Retrospective Studies medicine.diagnostic_test Sinoatrial node business.industry Middle Aged medicine.disease Ablation medicine.anatomical_structure Catheter Ablation cardiovascular system Cardiology Female Supraventricular tachycardia medicine.symptom Cardiology and Cardiovascular Medicine business |
| Zdroj: | Japanese Circulation Journal. 63:177-183 |
| ISSN: | 1347-4839 0047-1828 |
| DOI: | 10.1253/jcj.63.177 |
| Popis: | The aim of this study was to investigate catheter ablation of sino-atrial reentrant tachycardia (SART) and the electrophysiologic characteristics of the ablation sites. From January 1990 to October 1997, 651 patients with supraventricular tachycardia were referred and 11 patients were found to have SART. Ablation was successful in all cases with a mean number of 3.3 radiofrequency (RF) current pulses. SART terminated during 22 of 36 RF pulses. In spite of prompt termination, tachycardia could be re-induced in 3 of 11 patients with its earliest activation site shifted. At effective ablation sites, the electrograms during tachycardia were characterized as fractionated (75+/-17 ms), and 38+/-16 ms prior to surface P wave, and 42+/-18 ms prior to the high right atrium. Unipolar electrograms revealed a sharp negative unipolar deflection, so called QS pattern, in 15 of 20 sites during SART and 15 of 15 sites during sinus rhythm. During effective applications, atrial premature beats (APB) with activation sequences identical to sinus rhythm appeared in 14 of 22 cases. Effective ablation sites of SART showed fractionated electrograms during tachycardia and sinus rhythm. Unipolar electrogram with a QS pattern and APB during energy application could be an indicator of the optimal ablation sites. |
| Databáze: | OpenAIRE |
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