Avaliação do risco cardiovascular em pacientes com lipodistrofia secundária a terapia antirretroviral: critérios de framingham, índice tornozelo-braço e medida da espessura da camada medio-intimal da carótida

Abstract

The use of combination antiretroviral therapy has significantly reduced mortality and morbidity in patients infected by HIV virus. However, this treatment may cause metabolic alterations such as dyslipidemia, glucose intolerance, insulin resistance and lipodystrophy. The clinical and laboratorial consequences that follow these alterations may raise the risk for cardiovascular diseases. This research aimed to investigate the epidemiological, clinical and laboratorial aspects of patients with lipodystrophy associated to raise cardiovascular risk, ankle-brachial index (ABI) and measurement of the carotid intima-media thickness (cIMT). For so, it was performed a Transversal analytical study with 62 patients with lipodystrophy using highly active antiretroviral therapy (HAART) with ages varying from 29 to 68, followed up in the outpatient unit of lipodystrophy of João de Barros Barreto University Hospital. The patients were submitted to anamnesis with clinical examination, blood collection for laboratorial tests with glycemia dosage, total cholesterol and its fractions, triglycerides and ultrasensitive PCR, measurement of the ankle-brachial index and measurement of the carotid intima-media thickness through mode B ultrasonography. The patients were classified according to their cardiovascular risks through the criteria of the Framingham Score. The variables were analyzed by the study of the measurements of central trend and the hypotheses were analyzed by the chi-square Test and/or the Fisher exact Test. The prevalence of alteration of the ABI in the studied sample was 21% and of the patients with a increase of the cIMT was 48.4%. According to the Framingham score, 53.2% of the patients presented low risk to a cardiovascular event in a 10 year range, 16.1% of moderate risk and 30.7% of high risk. A patient with a increase of the cIMT presented a larger cardiovascular risk through the Framingham score. Male, age, increase of the abdominal circumference have presented a significant association with the carotid intima-media thickness cIMT.