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Pacing Interauricular Sincronizado en el Haz Posterosuperior: Viabilidad, Mecanismo y Resultados a Medio Plazo
Zhaohui Qiu1, Wu Xianhao1, Wei Hu1
1Department of Cardiology, Shanghai Tong Ren Hospital, Shanghai Jiao Tong University School of Medicine. (Z.Q., X.W., W.H., Z.X., Z.O., Y.Z.).
Circulation. Arrhythmia and electrophysiology
|December 25, 2025
Resumen
El marcapasos del haz posterosuperior (PSB) es un método de marcapasos auricular seguro y eficaz. Esta técnica mantiene la sincronía eléctrica interauricular y muestra resultados prometedores para pacientes con retrasos en la conducción.
Área de la Ciencia:
- Cardiología; Electrofisiología; Dispositivos Médicos
Sus antecedentes:
- El marcapasos convencional de la orejuela auricular derecha puede alterar la sincronía interauricular.; El marcapasos del haz posterosuperior (PSB) se dirige a la conexión muscular interauricular en la vena cava superior.; El marcapasos del PSB ofrece ventajas anatómicas potenciales para el marcapasos auricular.
Objetivo del estudio:
- Validar la viabilidad del marcapasos del PSB.; Evaluar los resultados clínicos a medio plazo del marcapasos del PSB.; Evaluar el impacto del marcapasos del PSB en la sincronía interauricular.
Principales métodos:
- Análisis retrospectivo de cohortes de 33 pacientes sometidos a marcapasos del PSB.; Colocación del electrodo en la pared medial de la vena cava superior.; Evaluación de parámetros electrofisiológicos y ecocardiográficos pre y post-procedimiento.
Principales resultados:
- 100% de éxito del procedimiento con parámetros estables del electrodo y sin complicaciones.; Reducción significativa de la duración de la onda P, especialmente en pacientes con retraso en la conducción.; Parámetros ecocardiográficos mantenidos y eventos clínicos mínimos.
Conclusiones:
- El marcapasos del PSB es una estrategia de marcapasos auricular factible, segura y eficaz.; Preserva la sincronía eléctrica interauricular y ofrece beneficios funcionales.; El marcapasos del PSB es una alternativa prometedora para el marcapasos auricular fisiológico.
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