Abstracts XIX Brazilian Congress of Nuclear Medicine
1. CARDIOLOGY
Smanio P, Castro C, Martins D, LeBien D, Mostiack D, Valencia G,Thom AF.- Instituto Dante Pazzanese de Cardiologia , São Paulo, Brasil.
In exercise ECG, an ST downslope (ST infra) may occur only in the recovery phase. Its clinical meaning is not yet established. The present study aims to assess the possible correlation of that ECG finding with myocardial ischemia, taking MIBI-Tc-99m perfusion SPECT (MIBI) as the reference standart. The data of 61 patients, 38 men, mean age 58years, without previous infarct were reviewed. All had ST infra only during exercise recovery. From those, 16 (26%) showed stress/rest MIBI with at least one heart segment with a reversible uptake defect, compatible with ischemia. But it was noted that 40 /61 (65,5%) had hypertension. The results suggest that there is a minor correlation between recovery ST infra and ischemia but a significant incidence of hypertension can be found in this group of patients.