ABC | Volume 114, Nº3, March 2020

Original Article Candemir et al. Slow Flow and Magnetic Resonance Imaging Arq Bras Cardiol. 2020; 114(3):540-551 Table 2 – Clinical characteristics in patients with slow flow Parameters Slow Flow (N= 19) Cardiac MRI (+) (N=10) Cardiac MRI (-) (N= 9) p value Age, mean (SD), years 54.1 ± 9.6 49.4 ± 7.1 0.29 Sex (Male), n (%) 6 (60) 9 (100) 0.08 Hypertension, n (%) 4 (40) 2 (22.2) 0.62 Diabetes mellitus, n (%) 3 (30) 3 (33.3) 1.0 Smoker, n (%) 6 (60) 3 (33.3) 0.37 Family history, n (%) 1 (10) 3 (33.3) 0.30 Dyslipidaemia, n (%) 3 (30) 0 (0) 0.21 BMI, mean (SD) (kg/m²) 28.2 ± 3.0 28.0 ± 2.4 0.81 NT-proBNP (pg/ml) 147.10 28.0 (21.5-56.2) 0.03 cTIMI flow (frame/second) (41.57-734.57) 26.4 (22.9-35.0) 0.67 METs, mL/kg/dk 24.1 (23.8-28.9) 10.26 ± 1.92 0.304 BMI: body mass index ; cTIMI: corrected Thrombolysis in Myocardial Infarction; METs: metabolic equivalents; MRI: magnetic resonance imaging. Figure 7 – Short- axis delayed contrast-enhanced PSIR cardiac MR image, showing focal subendocardial transmural and subepicardial enhancement areas, mostly in the inferior and inferolateral left ventricular walls (arrows), indicating scar tissues in the distribution of the LAD. Table 3 – Exercise test results for groups Parameter Control (N= 16) (1) Cardiac MRI (+) (N=10) (2) Cardiac MRI (-) (N= 9) (3) p value (1-2) p value (1-3) METs, mL/kg/dk 11.15 ± 1.43 9.27 ± 2.15 10.26 ± 1.92 0.013 0.201 METs: metabolic equivalents; MRI: magnetic resonance imaging. 547