Clinical usefulness of the nested polymerase chain reaction in the diagnosis of extrapulmonary tuberculosis
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2009
- ISIDORE Id: 10670/1.92ad61...
- 0036-3634
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http://www.redalyc.org/revista.oa
Salud Pública de México
Mots-clés
Salud Tuberculosis polymerase chain reaction extrapulmonary tuberculosis nested polymerase chain reactionSujets proches
Chain reaction, Polymerase PCR (Biochemistry) TB (Disease) Phthisis Lungs--Tuberculosis Consumption (Disease) Pulmonary tuberculosisCiter ce document
Guadalupe García et al., « Clinical usefulness of the nested polymerase chain reaction in the diagnosis of extrapulmonary tuberculosis », Salud Pública de México, ID : 10670/1.92ad61...
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Résumé
Objective. To evaluate the effectiveness of nested polymerase chain reaction (PCR) for diagnosis of extrapulmonary tuberculosis (ETB), as well as the impact of PCR results on clinical management. Materials and Methods. We conducted a study of nested PCR tests in 45 patients and a review of patient hospital files, calculating sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). Results. PCR was positive in 51% of cases; PCR sensitivity for diagnosing TB was 86%, specificity was 79%, PPV was 76%, and NPV was 88%. When solely analyzing urine samples, sensitivity and NPV increased to 100%. PCR exerted an influence on management in 27% of patients. Conclusions. PCR for rapid diagnosis of extrapulmonary TB has an adequate effect, which improves when performed on urine. The results of PCR exerted an acceptable impact on the clinical management of these patients.
