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Prevalence, risk factors and outcome of hyperlactataemia in HIV-infected patients
L Hocqueloux1, C Alberti, J-P Feugeas
1Clinique des Maladies Infectieuses, Département de Biostatistique et Informatique Médicale, Laboratoire de Biochimie B, Hôpital Saint-Louis, Paris, France.
Insights
Hyperlactataemia (HL) in HIV patients is linked to nucleoside reverse transcriptase inhibitors (NRTIs), particularly didanosine and stavudine. Discontinuing NRTIs can help resolve HL, which rarely leads to lactic acidosis or poorer outcomes.
Area of Science:
- Infectious Diseases
- Pharmacology
- Biochemistry
Background:
- Hyperlactataemia (HL) is a potential complication in HIV-infected patients.
- Understanding the prevalence, risk factors, and outcomes of HL is crucial for patient management.
Purpose of the Study:
- To determine the prevalence, risk factors, and clinical outcomes of hyperlactataemia in a cohort of HIV-infected patients.
- To investigate the association between HL and antiretroviral therapy, specifically nucleoside reverse transcriptase inhibitors (NRTIs).
Main Methods:
- A cohort of 140 HIV-infected patients had venous plasma lactate levels measured.
- HL was defined as two consecutive lactate levels > 2.1 mmol/L.
- Demographic, immuno-virological, and antiretroviral therapy data were compared between patients with and without HL.
Main Results:
- Hyperlactataemia was found in 8.5% of patients, all receiving NRTIs.
- Didanosine and stavudine were significantly associated with HL.
- Discontinuation of NRTIs led to lactate level normalization in most cases.
Conclusions:
- HL is associated with NRTI use, especially didanosine and stavudine.
- Discontinuation of NRTIs appears to facilitate the resolution of HL.
- Lactic acidosis is rare, and long-term outcomes for patients with HL are comparable to controls.
Objective:
We describe the prevalence, risk factors and outcome of hyperlactataemia (HL) in a cohort of 140 HIV-infected patients.
Patients And Methods:
Patients were enrolled consecutively within a 3-month period (July to September 1999) and followed until 31 October 2000. One hundred and forty HIV-infected patients had venous plasma lactate levels measured. HL was defined at baseline by two consecutive lactate levels > 2.1 mmol/L (upper limit of normal). We compared baseline demographic characteristics, immuno-virological parameters, antiretroviral therapy and outcome between patients with HL (cases) or without HL (controls). We described the clinical features of patients with HL.
Results:
Among 129 patients included in the analysis, HL was found in 11 patients (8.5%), all of whom were receiving nucleoside reverse transcriptase inhibitors (NRTIs). Cases were more likely than controls to receive didanosine or stavudine (82% vs. 19%, P= 2.7 x 10(-6) and 82% vs. 48%, P= 0.03, respectively). Only 4/11 cases (36%) had symptoms consistent with HL. After a median follow-up of 15 months, lactate level returned to normal in all three patients who discontinued NRTIs, but in only 2/8 patients who did not (P = 0.06). Only one case experienced lactic acidosis and died during follow-up. Mortality rate was similar in cases and controls.
Conclusion:
HL is associated with NRTI use, in particular didanosine and stavudine, and discontinuation of NRTIs seems to be associated with rapid resolution of HL. Lactic acidosis remains rare and the long-term outcome of patients with HL does not seem to be poorer than controls.
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