Correlation between dobutamine stress transesophageal echocardiography, thallium 201-dipyridamol scintigraphy and coronary angiography in the early detection of myocardial ischemia

RESUMO

In order to establish the sentivity and specificity of tranesophageal strees echocardiography with dobutamine (TEE-dobutamine) in the early detection of myocardial ischemia we studied 30 consecutive patients from the Coronary Care Unit (CCU) of the Hospital de Cardiologia, Centro Medico Nacional Siglo XXI. The results were correlated with thallium 201-dipyridamole scintigraphy (TDS), and coronary angiography. Two groups were formed Group I - 20 patients, 18 females/2 males, aged 37 - 73 years (mean 55 years) within the first week of myocardial infarction and/or unstable angina; Group II - 10 patients, five males/fives females, aged 35 - 65 years (mean 48 years) with atypical chest pain but with high suspicion of CHD. All group I patients, and none of group II, had significant stenoses on coronary angiography. Twenty patients had a positive TDS (18 patients from group I and two from group II). Twenty one patients had a positive test with TEE-dobutamine, 20 from group I and one from group II, which yields a sensitivity of 100 per cent, a specificity of 90 per cent, positive predictive value of 95 per cent and negative predictive value of 100 per cent