Block of the Mitral-pulmonary Isthmus During Ablation of a Single Left-sided Accessory Pathway Causing Different Patterns of Retrograde Atrial Activation
| Autor: | Vasconcelos, José Tarcísio Medeiros de, Costa, Eduardo Rodrigues Bento, Galvão Filho, Silas dos Santos, Barcellos, Cecília Monteiro Boya, Maldonado, Jaime Giovany Arnez |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Arquivos Brasileiros de Cardiologia v.78 n.5 2002 Arquivos Brasileiros de Cardiologia Sociedade Brasileira de Cardiologia (SBC) instacron:SBC Arquivos Brasileiros de Cardiologia, Volume: 78, Issue: 5, Pages: 504-509, Published: MAY 2002 |
| Popis: | 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: | OpenAIRE |
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