Atrial electrophysiologic abnormalities in patients with wolff-parkinson-white syndrome but without paroxysmal atrial fibrillation
| Autor: | Hisanori Shinohara, Teru Nada, Koichi Sakabe, Tetsuzo Wakatsuki, Nobuo Fukuda, Akiyoshi Nishikado, Takashi Oki, Yoshiyuki Tamura |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Tachycardia
medicine.medical_specialty Heart disease business.industry Refractory period P wave Effective refractory period Atrial fibrillation General Medicine medicine.disease Anesthesia Internal medicine Circulatory system Cardiology Medicine In patient medicine.symptom Cardiology and Cardiovascular Medicine business |
| Zdroj: | Clinical Cardiology. 27:396-400 |
| ISSN: | 0160-9289 |
| DOI: | 10.1002/clc.4960270706 |
| Popis: | Background: Paroxysmal atrial fibrillation (PAF) frequently occurs in patients with Wolff-Parkinson-White (WPW) syndrome. Hypothesis: The purpose of this study was to analyze the atrial electrophysiologic abnormalities and vulnerability to develop atrial fibrillation (AF) in patients with WPW syndrome but with no previous history of PAF. Methods: We investigated atrial electrophysiologic abnormalities and vulnerability to AF in patients with WPW syndrome but without PAF. An electrophysiologic study was performed in 28 patients with WPW syndrome, 23 with atrioventricular nodal reentrant tachycardia (AVNRT) and 25 with other arrhythmias (control), all of whom had no history of PAF. The following atrial excitability parameters were assessed: effective refractory period (ERP), spontaneous or paced (A1) and extrastimulated (A2) atrial electrogram widths, percent maximum atrial fragmentation (%MAF; A2/A1 × 100), wavelength index (WLI; ERP/A2), and inducibility of AF. Results: The ERP tended to be shorter in patients with WPW syndrome and in those with AVNRT than in the control group. The %MAF increased (154 ± 33 vs. 137 ± 23%, p < 0.05) and WLI decreased (2.7 ±0.8 vs. 3.4 ± 1.0, p |
| Databáze: | OpenAIRE |
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