[Cardiac complications in HIV infections]

Cardiological involvement in HIV infection is relatively rare but it presents important clinical aspects that are still open questions. We report our experience with HIV patients who underwent cardiological evaluation, Doppler echocardiography and follow-up.

We selected 127 patients (9%) on the basis of clinical suspicion of heart disease, taking them from the 1398 admitted for HIV infection between 1992 and 1995. Ninety-six patients had AIDS (group A) and 31 were in pre-AIDS phase (group B). The age was 21-52 years: 83 were males, 44 were females and 91% of the patients had been drug addicts. Echocardiography was executed with Hp Sonos 1000 and Sonos 2500 devices. Follow-up was 6-36 months.

Ninety-two patients (6.5% on total admitted patients) had heart disease. Thirty-five patients were normal on echocardiography. Other diseases were: pericardial effusion in 38 cases (30%), with CD4+ number significantly lower (p < 0.005); dilated cardiomyopathy in 20 patients (16%), with a low CD4+ number (p < 0.005); reversible segmental or diffuse hypokinesia compatible with clinical myocarditis was seen in 11 patients (9%), especially in group A (p < 0.005); infective endocarditis in 17 patients (13%), especially group B (p < 0.005); right ventricular dilatation in 7; discrete right ventricular mass in 3 patients. Sixty-five patients (51%) died during follow-up (group A only). There were 19 cardiac deaths (15%), which represents 1.3% of the total number of patients. Nine of these (47%) were in patients with cardiomyopathy. Total mortality was 85% in patients with dilated cardiomyopathy, 73% in myocarditis cases, 71% in pericarditis cases (especially extracardiac), 66% in right ventricular dilatation cases, 18% in endocarditis cases, 34% in normal cases.

Cardiac complications assume clinical importance, especially in the AIDS phase of HIV infection, but early diagnosis in the pre-AIDS phase is important for treatment. Clinical evaluation and echocardiography are corner-stones of the diagnosis. Prognosis depends especially on the clinical stage of HIV infection and myocardial involvement.