2009, Número 3
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salud publica mex 2009; 51 (3)
Utilidad clínica de la reacción en cadena de la polimerasa anidada para el diagnóstico de tuberculosis extrapulmonar
García-Elorriaga G, Gracida-Osorno C, Carrillo-Montes G, González-Bonilla C
Idioma: Ingles.
Referencias bibliográficas: 47
Paginas: 240-245
Archivo PDF: 129.63 Kb.
RESUMEN
Objetivo. Evaluar la eficacia de la reacción en cadena de la polimerasa (PCR) anidada para el diagnóstico de tuberculosis extrapulmonar, así como el impacto de sus resultados en el manejo clínico.
Material y métodos. Se realizó PCR anidada en 45 pacientes y se llevó a cabo la revisión de expedientes. Se calculó sensibilidad, especificidad, valor predictivo positivo (VPP) y valor predictivo negativo (VPN).
Resultados. La PCR fue positiva en 51% de los casos, la sensibilidad fue de 86%, la especificidad de 79%, el VPP de 76% y el VPN de 88%. Al analizar solamente las muestras de orina, la sensibilidad y VPN se incrementaron a 100%. La PCR influyó en el manejo de 27% de los pacientes.
Conclusiones. La PCR para el diagnóstico rápido de TB extrapulmonar tiene una eficacia adecuada, la cual mejora cuando se realiza en orina. El resultado de la PCR tuvo un impacto aceptable en el manejo clínico de estos pacientes.
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