2015, Número 3
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An Med Asoc Med Hosp ABC 2015; 60 (3)
Diagnóstico de enfermedad arterial coronaria en pacientes con bloqueo de la rama izquierda del haz de His: SPECT cardiaco versus angiotomografía coronaria
Parra LB, Bialostozky KD, Vallejo VE
Idioma: Español
Referencias bibliográficas: 34
Paginas: 191-198
Archivo PDF: 302.32 Kb.
RESUMEN
Antecedentes: El bloqueo de rama izquierda del haz de His se asocia a enfermedad arterial coronaria y muerte cardiovascular.
Objetivo: Este estudio compara la certeza diagnóstica de la tomografía computarizada con emisión de fotón único y la angiotomografía coronaria en la detección de enfermedad coronaria en pacientes con bloqueo de rama izquierda.
Métodos: Se incluyeron 23 pacientes a quienes se les realizó tomografía computarizada con emisión de fotón único cardiaco y angiotomografía coronaria. La certeza diagnóstica de ambos métodos para detectar enfermedad arterial coronaria (› 50% de estenosis) fue comparada con angiografía coronaria invasiva.
Resultados: La tomografía computarizada con emisión de fotón único cardiaco identificó correctamente 8 de 14 pacientes sin enfermedad coronaria significativa y 8 de 9 pacientes con estenosis › 50%. La angiotomografía coronaria identificó correctamente 12 de 14 pacientes sin enfermedad coronaria significativa y los 9 pacientes de 9 con estenosis › 50%. La certeza diagnóstica global, sensibilidad, especificidad, valor predictivo positivo y negativo para la tomografía computarizada con emisión de fotón único cardiaco fueron 69, 88, 57, 57 y 88% respectivamente y para la angiotomografía coronaria fueron 91, 100, 85, 81 y 100%.
Conclusiones: La certeza diagnóstica de la angiotomografía coronaria para detectar enfermedad arterial coronaria en pacientes con bloqueo de rama izquierda es mayor, por lo que podría proponerse como el primer método de imagen no invasiva en la evaluación de pacientes con estas características.
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