El diagnóstico de infarto de miocardio se ha facilitado con el uso de nuevos marcadores cardíacos. Entre los pacientes con un síndrome coronario agudo, pequeñas elevaciones de troponina T o I se correlacionan con un riesgo aumentado de muerte o recurrencia de eventos isquémicos en comparación con el de los pacientes con valores de troponina por debajo del límite de decisión. Sin embargo, este refinamiento en la capacidad de diagnóstico ocasiona nuevas cuestiones e incertidumbres debido a que las troponinas pueden elevarse en numerosas situaciones clínicas diferentes de las del infarto agudo de miocardio de origen trombótico. De cualquier forma, el aumento de las troponinas fuera del contexto de un infarto de miocardio también conlleva un peor pronóstico, de forma independiente del mecanismo por el que las troponinas son liberadas desde los miocitos a la circulación.
Palabras clave
Troponina
Infarto de miocardio
Angina
Diagnóstico
Pronóstico
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