Diagnosis of the pulmonary tuberculosis by polymerase chain reaction: a comparative study between HIV - positive and - negative individuals
Braz. j. microbiol
;
43(1): 261-265, Jan.-Mar. 2012. tab
Artigo
em Inglês
| LILACS
| ID: lil-622812
ABSTRACT
This study was performed to assess the efficiency of polymerase chain reaction (PCR) directly from sputum for the diagnosis of pulmonary tuberculosis by comparison between HIV-positive and HIV-negative individuals. Sputum samples were collected from hospitalized patients admitted with a clinical diagnosis of pulmonary tuberculosis, and subjected to smear microscopy, culture on LJ medium and detection of M. tuberculosis by PCR. Sensitivity, specificity, and predictive values (positive and negative) were calculated using smear and/or culture at day 42 as the gold standard, by comparing the yield in HIV-positive and HIV-negative individuals. Regardless of serostatus, the technique's yield had 62% sensitivity, 70% specificity, 79% positive predictive value, 50% negative predictive value, and 65% accuracy. HIV-negative had 64% sensitivity, 74% specificity, 75% positive predictive value, 63% negative predictive value, and 68% accuracy. HIV-positive had 59% sensitivity, 33% specificity, 87% positive predictive value, 10% negative predictive value, and 56% accuracy. The PCR showed a higher yield in HIV-negative individuals compared to HIV-positive individuals.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Escarro
/
Tuberculose Pulmonar
/
Técnicas In Vitro
/
Sequência de Bases
/
Reação em Cadeia da Polimerase
/
Técnicas Genéticas
/
HIV
/
Técnicas e Procedimentos Diagnósticos
/
Diagnóstico
Tipo de estudo:
Estudo diagnóstico
/
Estudos de avaliação
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. j. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
2012
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal de Santa Catarina/BR
/
Universidade do Sul de Santa Catarina/BR
Similares
MEDLINE
...
LILACS
LIS