HIV infection does not influence stroke outcomes in HIV-infected patients: A prospective study

Abstract

Background: Human immunodeficiency virus (HIV) infection, opportunistic infections and antiretroviral therapy contribute to the pathogenesis of stroke, yet, little is known about the influence of HIV infection on outcome in stroke patients. The aim of this study was to compare the outcome of stroke in HIV-infected patients with that of HIV-negative patients at the Douala General Hospital (DGH).

Patients and methods: A prospective cohort study was carried out at the Neurology unit and the Intensive Care Unit of the DGH from January 2010 to December 2015. All patients aged 15 years and above, admitted for stroke confirmed by brain imaging were included. HIV testing was systematically prescribed for all stroke patients. HIV-infected patients were then compared with HIV-uninfected patients. Quantitative variables were expressed as means while qualitative variables were expressed as frequencies, and were compared with the Chi² test or the Fisher test and the Student test respectively. Stroke outcome was evaluated by the mortality, in-hospital stay and functional outcome at 6 months post-stroke. Kaplan-Meyer method was used to determine survival.

Results: Forty of the 608 patients with stroke were HIV-positive, giving an in-hospital HIV prevalence of 6.6%. Mean age of the HIV-infected stroke patients was 51.3±10.4 years as against 59.6±13.53 in the HIV-uninfected group (P=0.001). The proportion of dyslipidemia in HIV-infected stroke patients with was greater than that in HIV-uninfected stroke patients (57.5% vs 8.9%, P<0.001). The most common type of stroke was ischemic in two-thirds of the patients in both groups. HIV-infected stroke patients had a mean hospital stay longer than that of HIV-uninfected patients (10.3±8.1 days vs 8.1±6.3 days, P=0.042). Post-stroke infections were more frequent in HIV-infected patients (17.5% vs 6.9%, P=0.014). The cumulative mortality rates at 6 months were 37.5% and 34.5% for the HIV-infected and the HIV-uninfected groups respectively (P=0.471). The functional outcome was similar in both groups at the 6^th month post-stroke (Rankin score>2: 38.5%vs 38.8%, P=0.973). There was no difference in survival between the two groups.

Conclusion: HIV infection does not affect in-hospital mortality and functional outcome in stroke patients a part the length of hospital stay.

Keywords: Africa.; Functional outcome; HIV infection; Mortality; Stroke.