Predictors of survival in HIV-infected tuberculosis patients

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Abstract
Objective To ascertain predictors of survival in HIV-infected tuberculosis (TB) patients. Design Retrospective cohort study. Setting New York City public hospital. Patients Fifty-four consecutive HIV-seropositive patients with newly diagnosed TB and no other AIDS-defining illnesses. Main outcome measures CD4+ T-lymphocyte counts, completion of anti-TB therapy, repeat hospitalizations with TB, and survival. Results Forty-five (84%) of the 54 patients died a median of 15 months after TB diagnosis (range, 1–80 months), five (9%) were alive after a median of 81 months (range, 75–84 months), and four (7%) were lost to follow-up after a median of 42 months (range, 30–66 months). In univariate analyses, disseminated TB, intrathoracic adenopathy, oral candidiasis and CD4 count depletion were each associated with decreased survival. In a multivariate analysis, CD4 count depletion was the only independent predictor of decreased survival. Repeat hospitalization with TB occurred in 10 out of 15 patients who did not complete anti-TB therapy compared with one out of 21 patients who completed anti-TB therapy (P < 0.001). Conclusion The clinical presentation of TB and CD4 count at TB diagnosis are each predictive of survival in HIV-seropositive TB patients. The CD4 count is the only independent predictor of survival.

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