alexa Severe hyperlactataemia complicating stavudine first-line antiretroviral therapy in South Africa.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Stead D, Osler M, Boulle A, Rebe K, Meintjes G

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Abstract BACKGROUND: In the public sector antiretroviral therapy (ART) programme in South Africa the standardized first-line regimen includes stavudine (d4T). Severe symptomatic hyperlactataemia (SHL) is a potentially life-threatening complication of d4T. METHODS: GF Jooste Hospital is a referral centre for six ART clinics. We retrospectively reviewed cases referred with lactate levels > or =5 mmol/l that were attributed to nucleoside reverse transcriptase inhibitors from August 2003 to November 2005. We calculated cumulative ART exposure in patients attending these clinics to derive a referral rate. RESULTS: In total, 75 patients were referred with severe SHL (71 female). All had been on d4T and on ART for a median of 10 months. The referral rate for severe SHL was 17.5 cases per 1,000 patient-years. In 53 patients (71\%), lactic acidosis (standard bicarbonate [SHCO3] <20 mmol/l) was confirmed, resulting in a referral rate of 12.3 cases per 1,000 patient-years. Twelve patients (16\%) died during acute admission (< or =30 days). SHCO3 <15 mmol/l and pH < 7.2 were the only factors associated with acute mortality (odds ratio [OR] 22.5, 95\% confidence interval [CI] 2.8-1,045.7 and OR 13.9, 95\% CI 2.7-86.9, respectively). A total of 30 less severe cases were rechallenged with zidovudine without recurrence of SHL. CONCLUSIONS: This study confirms a high incidence of severe SHL in Africa, which has been shown in previous studies. Rechallenge with zidovudine in less severe cases was found to be safe.
This article was published in Antivir Ther and referenced in Journal of Antivirals & Antiretrovirals

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