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2022, Número 2

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CorSalud 2022; 14 (2)


El origen de la dispersión de la onda P resuelto - Fin de una era

Carmona PR, Lorenzo ME

Idioma: Español
Referencias bibliográficas: 52
Paginas: 184-192
Archivo PDF: 743.61 Kb.


RESUMEN

Desde hace más de dos décadas se utiliza la dispersión de la onda P (Pd) para la predicción de fibrilación auricular, pero no hay certeza de su mecanismo de pro-ducción en el electrocardiograma. Se han planteado dos teorías conocidas como local y vectorial. Utilizando técnicas de análisis vectorial y registros digitales mag-nificados en comparación con medidas de conducción auricular, se ha podido dilucidar cuál de las dos teorías justifica mejor la ocurrencia de la Pd. La teoría vectorial constituye la mejor explicación para el origen de este parámetro. La conducción atrial no homogénea (base de la teoría local) presenta una pequeña, aunque significativa contribución al origen de la Pd, pero solo cuando existe retra-so dromotrópico interauricular. La justificación vectorial de la Pd desaconseja su uso en clínica cardiológica.


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