Efeito do tratamento clínico sobre os índices de risco cardiovascular em indivíduos infectados pelo HIV / Effect of clinical treatment on cardiovascular score risk indexes in patients with HIV infection

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Although HAART therapy has reduced AIDS morbid-mortality, it is associated to metabolic disturbances and increased cardiac risk profile. It is well established in clinical cardiology that cardiac risk scores can predict cardiovascular complications with great accuracy and are useful to guide interventions toward risk reduction. We designed this study to analyze the effect of a primary prevention intervention program on the estimated cardiovascular risk and to compare the power of three different risk scores to detect risk reduction in a short time window. Methods: We prospectively evaluated 87 HIV + patients referred for cardiologic consultation for primary prevention and we assessed their cardiac risk applying 3 risk scores: Framingham (FR), PROCAM (PR) and National Cholesterol Education Program (ATP-III) in four steps: before and 30 days, 3 months and 6 months after intervention. For this study cardiovascular risk was classified as low if it was predicted less than 10% risk of cardiac complications for the next 10 years, or elevated, if it was higher than 10%. All patients were included in a cardiovascular prevention program and received non-pharmacological concealing (diet, physical activity prescription, smoking cessation advice) and pharmacological therapy, when appropriate (hypolipidemic and anti-hypertensive medications). Deviations in risk scores were compared using Fisher`s exact test at a p <.05 significance level. In our population, the mean age was 52 yrs, 92% were male, 39.1% were smokers, 70.1% had hypertension, 18.4% had diabetes. All patients were under HAART therapy, 56.3 % were receiving protease inhibitors, and no patient had his therapy switched. Lipid profile analysis before interventions revealed triglycerides = 298.70 mg/dL + 242.30, totalcholesterol= 224.6 mg/dL + 47.60, LDL-cholesterol = 129.50 mg/dL + 44.50, HDLcholesterol = 43.10 mg/dL + 12.60. Six months after intervention lipid profile change to: triglycerides = 206.20 mg/dL + 135.3 (p<.05), total-cholesterol = 189.8 mg/dL + 38.0 (p<.001), LDL-cholesterol = 109.10 mg/dL + 30.30 (p<.001), HDL-cholesterol = 45.20 mg/dL + 13.30 (p=NS). According to FR score, elevated cardiac risk before and 6 months after intervention was estimated in 92% x 27.6% of our patients, respectively (P = .0001). According to PROCAM score, it was 25.3% x 14.9%, respectively (P = NS). As for ATP-III, it was 80.5% x 50.6%, respectively (P= .0002). The proposed cardiovascular prevention program was associated with a reduction in the estimated cardiovascular risk in patients with HIV infection. All score risk indexes, except PROCAM are useful to the initial and follow-up evaluation of the cardiac risk in HIV infected patients, but the Framingham Risk score performance showed greater sensitivity than the others to detect small variations in a short time window, so it should be the score of choice

ASSUNTO(S)

acquired immunodeficiency syndrome fatores de risco hiv cardiovascular diseases/prevention &control risk factors síndrome de imunodeficiência adquirida anti-retroviral agents/adverse effects doenças cardiovasculares/prevenção &controle hiv anti-retrovirais/efeitos adversos

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