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2012, Número 2

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Rev Cubana Invest Bioméd 2012; 31 (2)


Síndromes de la onda J

Méndez RA

Idioma: Español
Referencias bibliográficas: 64
Paginas: 157-174
Archivo PDF: 224.80 Kb.


RESUMEN

Se realizó una revisión sobre los aspectos más novedosos y polémicos de los síndromes de la onda J, que incluyó el síndrome de repolarización precoz, la fibrilación ventricular idiopática y la muerte súbita nocturna inexplicable. Se enfatiza en las características electrocardiográficas de estos síndromes donde se destaca la presencia de un supradesnivel del ST tipo cóncavo con melladuras o empastamiento del mismo. Se profundiza en las bases genéticas, a veces común a todos ellos, en particular la mutación SCN5A asociada con el supradesnivel del ST y más recientemente la mutación S422L-KCNJ8 como causa de alteración de los canales IK-ATP, lo cual se asocia con mortalidad arrítmica cardíaca. Se concluye que aunque no todos los pacientes con este síndrome estén en riesgo de eventos arrítmicos o de muerte súbita cardíaca, existe un grupo de ellos no despreciable que sí lo están, por lo que el gran desafío de la comunidad médica es desarrollar mejores estrategias de estratificación de riesgo y desarrollar tratamientos más seguros y eficaces para estos.


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