Abstract

GOMEZ, Efraín A. Identification of patients with heart failure and preserved systolic function: a regional epidemiological study (I-PREFER Study)-Colombia. Rev. Colomb. Cardiol. [online]. 2013, vol.20, n.2, pp.58-67. ISSN 0120-5633.

The main objective of the I-PREFER study was to determine the prevalence of heart failure with preserved systolic function and compare the clinical characteristics of these patients with those with reduced systolic function in the developing countries. Preserved systolic function was defined as an ejection fraction of the left ventricle (LVEF) ?45%, measured in the year prior to the visit. We present the Colombian results of an observational, multi-regional (developing countries), cross-sectional study, where outpatients over 21 years with recent or previous diagnosis of heart failure were recruited consecutively for three months. For each patient we recorded medical history, cardiovascular risk factors, ventricular function, medications, co-morbidities and complementary tests in a standardized manner. Of 211 patients included in the registry, only 151 (71.6%) had available information respect their ventricular function. Among these, 102 (67.5%) had heart failure with preserved systolic function and 49 (32.5%) heart failure without it. Compared with patients in the heart failure group without preserved systolic function, those in the group of heart failure with preserved systolic function were more often women (57.8% vs. 40.8%, p = 0.04), had higher body mass index (26.83 + 4.27 kg/m2 vs. 24.60 + 3.53 kg/m2, p = 0.002), higher systolic (129.17 + 19.93 mm Hg vs . 117.05 ± 22.53 mm Hg, p <0.001) and diastolic blood pressure (76.25 + 10.87 mm Hg vs. 71.29 + 12.71 mm Hg, p = 0.014), and higher medical history of revascularization (34.7% vs. 17.6%, p = 0.20). 71.6% of patients with preserved systolic function had hypertension and only 47.9% of them had controlled blood pressure. The results of the I-PREFER study for Colombia show that heart failure with preserved systolic function represents 67.5% of the cases treated on an outpatient basis for this condition and that this value is similar to that found for Latin America in the global study (69% , 65-72%). These patients were mostly women, had higher body mass indexes, higher systolic and diastolic blood pressure, and history of revascularization, similar to that reported in the I-PREFER global study where these patients were also more often women, elderly, hypertensive and obese. More than two thirds of patients with preserved systolic blood pressure had hypertension and less than half of them had controlled blood pressure.

Keywords : registry; epidemiology; cardiology.

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