Videos de Experimentos Relacionados
Vías atrioventriculares accesorias que conducen sólo en la dirección antegrada
Circulation
|December 1, 1980
Resumen
Los pacientes con síndrome de Wolff-Parkinson-White y vías atrioventriculares accesorias que conducen sólo antegrado son mayores y por lo general presentan fibrilación auricular más adelante en la vida. Sus propiedades de vía son similares a las vías bidireccionales.
Área de la Ciencia:
- Cardiología Cardiología.
- Electrofisiología y electrofisiología.
- Electrofisiología Cardíaca Electrofisiología cardíaca.
Sus antecedentes:
- Las vías atrioventriculares accesorias son un sello distintivo del síndrome de Wolff-Parkinson-White.
- Estas vías pueden exhibir conducción antegrada, retrógrada o bidireccional.
- La conducción exclusiva antegrade representa una variante poco común.
Objetivo del estudio:
- Para describir a los pacientes con vías accesorias que exhiben sólo conducción antegrada.
- Para comparar estos pacientes con aquellos que tienen vías accesorias bidireccionales.
- Para analizar la presentación clínica y las características electrofisiológicas.
Principales métodos:
- Análisis retrospectivo de 143 pacientes con vías accesorias únicas.
- Categoría en grupos de conducción exclusivamente antegrados (n=7), bidireccionales (n=111) y exclusivamente retrógrados (n=25).
- Comparación de datos demográficos, clínicos y electrofisiológicos.
Principales resultados:
- Los pacientes con conducción exclusiva antegrade eran significativamente mayores (42 años) que el grupo bidireccional (31,4 años).
- La refractividad y las propiedades de conducción de antegrado fueron similares entre los grupos exclusivos de antegrado y bidireccionales.
- El grupo exclusivo antegrado se presentó predominantemente con fibrilación auricular (6/7), mientras que el grupo bidireccional mostró varias arritmias.
Conclusiones:
- Las vías accesorias con conducción exclusiva antegrada son raras en el síndrome de Wolff-Parkinson-White.
- Estos pacientes a menudo permanecen asintomáticos hasta desarrollar fibrilación auricular con la edad.
- Las propiedades funcionales de la conducción antegrada son comparables a las vías bidireccionales a pesar de la falta de conducción retrógrada.
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