ABC | Volume 112, Nº2, February 2019

Original Article Dippe Jr. et al Study of myocardial perfusion in obese individuals without known IHD Arq Bras Cardiol. 2019; 112(2):121-128 Figure 1 – Percentage of abnormal myocardial perfusion imaging with single-photon emission computed tomography (SPECT-MPI) according to BMI in the study population (n = 5,526) *a p-value lower than 0.05 was considered statistically significant. 80 70 60 50 40 30 20 10 0 IMC em Kg/m 2 30.0 a 34.9 35.0 a 35.9 40.0 ou mais 23.2%* 23.1%* 25.2%* 76.8% 76.9% 74.8% *Valor de p < 0.78 MPI-SPECT normal MPI-SPECT anormal Table 4 – Factors associated with abnormal prefusion after multivariate analysis in obese patients without known ischemic heart disease (n = 5,526) OR (95%CI) Valor de p Age; years 1.02 (1.01 - 1.03) < 0.001 BMI 30.0 - 34.9 kg/m 2 Reference 35.0 - 39.9 kg/m 2 0.91 (0.73 - 1.12) 0.38 ≥ 40.0 kg/m 2 0.99 (0.68 - 1.45) 0.97 Male sex 0.82 (0.67 - 1.01) 0.052 Diabetes mellitus 1.57 (1.31 - 1.88) < 0.001 Systemic arterial hypertension 1.21 (0.98 - 1.50) 0.08 Dyslipidemia 1.14 (0.96 - 1.36) 0.13 Symptoms before the test Asymptomatic Reference Atypical angina 1.21 (0.97 - 1.49) 0.08 Typical angina 2.45 (1.82 - 3.31) < 0.001 Tiredness 0.93 (0.72 - 1.20) 0.59 Stress protocol; n (%) Physical Reference Pharmacological 1.53 (1.18-1.98) < 0.001 Physical exertion, in METs 0.89 (0.85-0.93) <0.001 LVEF LVEF > 50% Reference LVEF 30 - 49% 7.42 (5.3-10.4) <0.001 LVEF < 30% 10.2 (2.6-40.3) <0.001 BMI: body mass index; METs: metabolic equivalents; LVEF: left ventricular ejection fraction. A p < 0.05 was considered statistically significant. 124