IJCS | Volume 32, Nº2, May/June 2019

219 Table 1 - Clinical and demographic characteristics of patients who underwent myocardial revascularization surgery between 2013 and 2014 Variable N % or mean ± SD 95% CI Lower limit Upper limit Sex Male 134 74.9 67.8 81.0 Female 45 25.1 19.0 32.2 Age (years) 179 62.1 ± 9.2 - - Origin Belem (capital) 90 50.3 42.7 57.8 Metropolitan area* of Belem 29 16.2 11.1 22.4 Countryside cities 58 32.4 25.6 39.8 Other state 2 1.1 0.1 4.0 Risk factors¹ SAH 149 83.2 76.9 88.4 Dyslipidemia 38 21.2 15.5 27.9 Diabetes mellitus 87 48.6 41.1 56.2 Family history of CAD 4 2.2 0.6 5.6 Smoking 103 57.5 49.9 64.9 Previous comorbidities Previous stroke/TIS 3 1.7 0.4 4.8 Left ventricular contractile dysfunction (LVEF < 45.0%) 59 33.0 26.3 40.0 Chronic obstructive pulmonary disease 7 3.9 1.6 7.9 Peripheral artery disease 2 1.1 0.1 4.0 Baseline chronic kidney disease 7 3.9 1.6 7.9 Previous cardiac surgery 6 3.3 1.2 7.2 Previous percutaneous coronary intervention 28 15.6 10.6 21.2 Previous medication ACEi or ARB 74 41.3 34.6 48.6 Betablocker 29 16.2 26.7 21.2 Statin 18 10.0 5.6 14.5 AAS 34 19.0 13.4 24.6 Clopidogrel 9 5.0 2.2 8.4 Potassium-sparing diuretics 6 3.3 1.1 6.1 Thiazide and loop diuretics 11 6.1 2.8 10.0 Calcium channel blockers 8 4.5 1.7 7.8 Oral nitrate 16 8.9 5.0 13.4 Glucose lowering drug 36 20.1 14.0 26.3 Insulin 7 3.9 1.7 7.3 ASA: acetylsalicylic acid. TIA: transient ischemic attack; ARB: angiotensin receptor blockers. CAD: coronary artery disease. SD: standard deviation. LVEF: left ventricular ejection fraction. SAH: systemic arterial hypertension. 95%CI: 95% confidence interval. ACEi: angiotensin converting enzyme inhibitors; *cities of Ananindeua, Benevides, Castanhal, Marituba, Santa Bárbara and Santa Izabel. Lobato et al. Patients undergoing cagb in Pará, Brazil Int J Cardiovasc Sci. 2019;32(3)217-226 Original Article