Objective. To determine the discriminative capacity of myocardial perfusion with single photon emission tomography (SPECT) to predict coronary obstructions by coronary angiography. To determine mortality and major cardiovascular events at follow-up. Materials and methods. Retrospective observational study with clinical follow-up in patients undergoing SPECT and then coronary angiography. We excluded patients with myocardial infarction and percutaneous and/or surgical revascularization in the previous 6 months. Results: 105 cases were included in the study. The most commonly used SPECT protocol was pharmacological (70%). Patients with perfusion defect ≥10% of total ventricular mass (TVM) had significant coronary lesions (SCL) in 88% of cases (sensitivity 87.5% and specificity 83%). On the other hand, having ischemia ≥10% of the TVM was associated with 80% SCL (sensitivity: 72%, specif...

Objetivo. Determinar la capacidad discriminativa de la perfusión miocárdica con tomografía de emisión de fotón único (SPECT) para predecir obstrucciones coronarias por coronariografía. Determinar la mortalidad y eventos cardiovasculares mayores en el seguimiento. Materiales y métodos. Estudio observacional retrospectivo con seguimiento clínico en pacientes sometidos a SPECT y luego coronariografía. Excluimos pacientes con infarto de miocardio y revascularización percutánea y/o quirúrgica en los seis meses previos. Resultados. Se incluyeron 105 casos en el estudio. El protocolo de SPECT más usado fue el farmacológico (70%). Los pacientes que tenían defecto de perfusión mixto (isquemia e infarto) ≥10% de la masa ventricular total (MVT) presentaron en el 88% de los casos lesiones coronarias significativas (LAS) (sensibilidad 87,5% y especificidad 83%). Por otro lado, el t...

Objective. To determine the discriminative capacity of myocardial perfusion with single photon emission tomography (SPECT) to predict coronary obstructions by coronary angiography. To determine mortality and major cardiovascular events at follow-up. Materials and methods. Retrospective observational study with clinical follow-up in patients undergoing SPECT and then coronary angiography. We excluded patients with myocardial infarction and percutaneous and/or surgical revascularization in the previous 6 months. Results: 105 cases were included in the study. The most commonly used SPECT protocol was pharmacological (70%). Patients with perfusion defect ≥10% of total ventricular mass (TVM) had significant coronary lesions (SCL) in 88% of cases (sensitivity 87.5% and specificity 83%). On the other hand, having ischemia ≥10% of the TVM was associated with 80% SCL (sensitivity: 72%, specif...