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- W2385280214 abstract "Objectives This paper reported 4 patients with atrial tachyarrhythmias originating from the superior vena cava and evaluated the electrophysiologic characteristics and radiofrequency ablation efficacy. Methods Sur-face and Holter electrogram were recorded and the features of arrhvthmias were analyzed. Multiple-site mapping of atria and superior vena cava was used to identify the origin of atrial tachvarrhvthmias. At the site of the earliest activations focal ablation (2 cases)was performed, and isolative ablation (2 cases)was used at the atriocaval junction to eliminate the tachyarrhythmias. Clinical follow-up evaluated the efficacy of ablation. Results Four patients had frequent pre-mature atrial contractions (PAG)and nonsustained atrial tachycardia (AT), and only one patient had nonsustained atrial fibrillation (AF). The P waves of tachyarrhythmia had positive polarity in lead Ⅰ、 Ⅱ 、 Ⅲ、 aVF and V1 , and negative in lead aVR. The earliest site of activation during tachyarrhythmia was located 0.4-4.0 cm above the atriocaval junction. Focal ablation of the superior vena cava potential eliminated the AT (2 cases)and the atriocaval isolation created exit block and prevented the atrial tachyarrhythmias. All 4 patients were free of the atrial arrhythmia during follow-up. Conclusion It is concluded that atrial tachyarrhythmias originating from the superior vena cava have characteristics on electrogram and radiofrequency ablation has clinical efficacy on controlling these arrhvthmias." @default.
- W2385280214 created "2016-06-24" @default.
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- W2385280214 date "2003-01-01" @default.
- W2385280214 modified "2023-09-24" @default.
- W2385280214 title "Electrophysiologic characteristics and radiofrequency ablation for atrial tachyarrhythmias originating from the superior vena eava" @default.
- W2385280214 hasPublicationYear "2003" @default.
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