Hepatotoxicity of tuberculosis chemotherapy under general programme conditions in Singapore
OBJECTIVES: To determine the incidence, clinical course and outcome of TB drug-induced hepatitis (DH) and the risk factors associated with DH under general programme conditions.
DESIGN: A retrospective review of adult patients started on TB treatment in 1998.
RESULTS: There were 55 cases of DH in the cohort of 1036 patients treated in 1998. The median time to diagnosis of DH was 38 days. Factors significantly associated with DH were abnormal baseline transaminases/bilirubin (OR 2.1, 95%CI 1.1– 4.3, P = 0.02), age >60 years (OR 1.97, 95%CI 1.14–3.34, P = 0.01) and female sex (OR 1.9, 95%CI 1.07–3.4, P = 0.02). Ethnicity, self-reported alcohol consumption and body weight were not associated with development of DH. All three patients with fatal DH had received pyrazinamide-containing regimens. Treatment was re-introduced in 48 patients and successfully completed in 45 patients. The median time to reinstitution of TB treatment was 23 days.
CONCLUSION: The incidence of TB drug-induced hepatitis was 5.3%. Age .60 years, abnormal baseline transaminase/bilirubin levels and female sex were risk factors associated with the development of TB drug-induced hepatitis.
Document Type: Regular Paper
Publication date: 2002-08-01
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