2005, Número 1
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Arch Cardiol Mex 2005; 75 (1)
Análisis de la utilidad de ecocardiografía de contraste y medicina nuclear en afección cardiovascular de origen autoinmune
Espinola ZN, Alexánderson E, Soto ME, Flores M, Amigo M
Idioma: Español
Referencias bibliográficas: 42
Paginas: 42-48
Archivo PDF: 104.77 Kb.
RESUMEN
Actualmente, 1 de cada 3 hombres y 1 de cada 10 mujeres desarrolla un evento cardiovascular ateroesclerótico mayor antes de los 60 años, por lo que la enfermedad arterial coronaria continúa siendo un problema de salud pública. Existe una asociación significativa entre enfermedades autoinmunes tales como lupus eritematoso sistémico, artritis reumatoide y ateroesclerosis coronaria prematura o acelerada. Los objetivos del estudio fueron: a) Valorar la perfusión miocárdica en pacientes con enfermedades reumatológicas, mediante ecocardiografía de contraste (EC) y establecer su utilidad comparando con los resultados obtenidos por medicina nuclear como método de referencia (MN). b) Evaluar la prevalencia de alteraciones en la perfusión miocárdica subclínica en enfermedades autoinmunes y establecer una estrategia para evaluar los cambios cardiovasculares en este padecimiento. Se estudiaron mediante EC en reposo y en el pico máximo del estrés y MN a 37 pacientes pertenecientes a la Consulta externa del Departamento de Reumatología para valorar la perfusión miocárdica del ventrículo izquierdo. La prevalencia de alteraciones en la perfusión miocárdica en síndrome antifosfolípido primario (SAFP), lupus eritematoso y artritis reumatoide por EC y MN, cuando estos métodos se analizaron en forma independiente o juntos fue del 27%. El valor predictivo positivo de ambas pruebas fue del 80%, la sensibilidad del 80% y la especificidad del 93%. En los pacientes con SAFP se encontró que cuando se realizan ambas pruebas diagnósticas la MN alcanza una sensibilidad del 100% si el EC es positivo y una especificidad del 100% cuando el EC negativo. Podemos concluir que es importante determinar la existencia de enfermedad coronaria subclínica en los pacientes con enfermedades inmunológicas mediante estudios no invasivos (Sestamibi SPECT y/o ecocardiografía de contraste) que permiten valorar la perfusión miocárdica.
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