Baseline sputum time to detection predicts month two culture conversion and relapse in non-HIV-infected patients

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dc.contributor.authorHesseling A.C.
dc.contributor.authorWalzl G.
dc.contributor.authorEnarson D.A.
dc.contributor.authorCarroll N.M.
dc.contributor.authorDuncan K.
dc.contributor.authorLukey P.T.
dc.contributor.authorLombard C.
dc.contributor.authorDonald P.R.
dc.contributor.authorLawrence K.A.
dc.contributor.authorGie R.P.
dc.contributor.authorHelden P.D.V.
dc.contributor.authorBeyers N.
dc.date.accessioned2011-05-15T15:53:46Z
dc.date.available2011-05-15T15:53:46Z
dc.date.issued2010
dc.description.abstractBACKGROUND: Few biomarkers are available to identify tuberculosis (TB) patients at risk of delayed sputum conversion and relapse. OBJECTIVES: To investigate whether baseline pretreatment time to detection (TTD) of culture predicted 2-month bacteriological conversion and TB relapse. METHODS: A total of 263 non-HIV-infected smearpositive previously untreated pulmonary TB patients were prospectively followed from diagnosis until treatment outcome after 6 months' treatment and TB recurrence within 24 months. RESULTS: The median TTD was 3 days (range 1-17). Of 211 (80.2%) patients with favourable treatment outcome, 22 (10.4%) had recurrence, while 12 (5.7%) had confi rmed relapse. Culture conversion at 2 months was associated in univariate analysis with the presence and number of cavities, extensive parenchymal involvement, male sex, sputum smear grading and TTD. In multiple logistic regression, TTD or smear grading and extensive parenchymal involvement both predicted month 2 conversion. Relapse was predicted by TTD, sex, body mass index, smear grading and number of cavities in univariate analysis, and in multivariate regression by TTD and sputum smear grading. CONCLUSIONS: Baseline TTD and smear grading predicted month 2 culture conversion, relapse and also recurrence. These markers may be useful to identify non-HIV-infected patients at risk of recurrence, and may be relevant in clinical trials. © 2010 The Union.
dc.description.versionArticle
dc.identifier.citationInternational Journal of Tuberculosis and Lung Disease
dc.identifier.citation14
dc.identifier.citation5
dc.identifier.issn10273719
dc.identifier.urihttp://hdl.handle.net/10019.1/8798
dc.titleBaseline sputum time to detection predicts month two culture conversion and relapse in non-HIV-infected patients
dc.typeArticle
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