ABC | Volume 111, Nº6, December 2018

Original Article Andrade et al Prognostic Value of Myocardial Scintigraphy Arq Bras Cardiol. 2018; 111(6):784-793 Figure 2 – A. A kaplan-Meier survival curve of mortality according to ranges of total perfusion defect (TPD). B. Kaplan-Meier survival curve of revascularization according to ranges of ischemia defect. 1.0 0.9 0.8 0.7 0.6 0.5 0 24 48 72 96 0 24 48 72 96 Log Rank p = 0.008 Log Rank p = 0.000 Follow-up time in months Follow-up time in months Cumulative survival Cumulative survival TPD = 0 TPD = 1-5% TPD > 6% Ischemia = 0 Ischemia = 1-2% Ischemia > 3% 1.00 0.75 0.50 0.25 0.00 A B In the present study, 647 patients were included and the mean follow-up time was 5.2 years. Previous studies have selected a smaller number of participants, ranging from 196 13 to 370 patients, 11 and had less follow-up time, an average of 3 years. Regarding the population characteristics, the predominance of males and the mean age of 66 years were common to other publications, and consistent with data from the literature. 15 In contrast, the prevalence of comorbidities was quite variable. The current study presented a higher frequency of diabetics. In addition, more than half of the participants had previous AMI, and the prevalence of AH pressure was close to those described above. 11,14 788