| Autor: |
de Vasconcelos JT; Clínica de Ritmologia Cardíaca, Hospital Beneficência Portuguesa de São Paulo., Costa ER, dos Santos Galvão Filho S, Barcellos CM, Maldonado JG |
| Jazyk: |
English; Portuguese |
| Zdroj: |
Arquivos brasileiros de cardiologia [Arq Bras Cardiol] 2002 May; Vol. 78 (5), pp. 497-509. |
| Abstrakt: |
The case of a 16-year-old patient with atrioventricular tachycardia caused by a single left anterolateral accessory pathway is reported. When the patient underwent radiofrequency ablation, a lesion on the mitral annulus lateral wall produced changes in the retrograde atrial activation pattern determined by that pathway; changes ranged from a delay in depolarization of the annulus posterior portions to full left atrium counterclockwise activation. Such phenomena were probably caused by a block in the isthmus between the annulus and the lower left pulmonary vein ostium. This case illustrates the importance of the mitral-pulmonary isthmus in the process of left atrium activation, an alert to changes induced by its unintentional block during accessory pathway ablation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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