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  • Title: [Mycobacterium tuberculosis drug resistance in patients with HIV and pulmonary tuberculosis infections in Rome: 1987-1996].
    Author: Palmieri F, Pellicelli AM, Girardi E, Rianda A, Bordi E, Festa A, Catania S, D'Amato C.
    Journal: Ann Ital Med Int; 1998; 13(3):139-45. PubMed ID: 9859569.
    Abstract:
    A retrospective chart review was performed on 118 HIV infected patients with pulmonary tuberculosis hospitalized between 1987 and 1996 in a tertiary care center for Infectious Diseases in Rome. The aims of this study were: a) to evaluate global prevalence of and risk factors for drug-resistant Mycobacterium tuberculosis and multidrug resistant tuberculosis; b) to assess trends in prevalence of drug-resistant tuberculosis over the 10-year study period. Prevalence of drug resistance of first Mycobacterium tuberculosis isolates was tested on Lowenstein-Jensen medium with the proportional method. Of the 118 patients studied, 83 had never been treated for tuberculosis and 35 had already been treated for at least 1 month. The overall prevalence of resistance to one or more drugs was 25% (17% in never treated patients vs 46% in already treated patients; p = 0.002). Five percent of isolates were resistant to both isoniazid and rifampin (1% in never treated patients vs 14% in already treated patients; p = 0.008). Resistance rates to individual drugs were: isoniazid 14%, rifampin 8%, ethambutol 0%, streptomycin 13%. During the study period no significant variations in prevalence of drug-resistant tuberculosis were found. In our area, empiric therapy should include 4 drugs: as well as isoniazid, rifampin and pyrazinamide, we recommend ethambutol. Surveillance of drug-resistant tuberculosis is needed. Directly observed therapy should be considered for HIV patients in order to prevent increases in drug resistance, relapses, and treatment failures.
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