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Rev. Inst. Med. Trop. Säo Paulo ; 49(3): 165-170, May-June 2007. tab, graf
Article in English | LILACS | ID: lil-454764

ABSTRACT

The objective of this study was to evaluate the adenosine deaminase (ADA) activity usefulness in the diagnosis of tuberculous pericarditis (TP), comparing its value with pericardial effusions (PE) caused by other pericardial diseases. A retrospective case-control study was conducted with nine cases of TP and 39 other than TP diseases (12 neoplastic, 11 septic and 16 unknown origin). Every patient included in this study had PE samples submitted to ADA activity measures and microbiological analysis, and then had pericardial tissue samples submitted to microbiological and histopathological examination. Considering the value of 40 U/L as the cut-off for the diagnosis of TP, the specificity and sensitivity were respectively of 72 percent and 89 percent. The specificity of ADA activity for the TP was best applied in the differential diagnosis from PE of unknown origin. The present study demonstrates the clinical value of the measurement of ADA activity in PE in the diagnosis of TP.


O objetivo deste estudo foi avaliar a atividade da adenosina deaminase (ADA) como auxiliar no diagnóstico da tuberculose pericárdica (TP), comparando o seu valor no derrame pericárdico com outras doenças pericárdicas. Um estudo retrospectivo tipo caso-controle foi conduzido com nove casos de TP e 39 pacientes com outras doenças pericárdicas (12 neoplasias, 11 pericardites bacterianas e 16 pericardites de etiologia indeterminada). Cada paciente incluído no estudo teve sua amostra de tecido pericárdico encaminhada para estudo microbiológico e histopatológico. Considerando o valor de 40 U/L como corte para o diagnóstico de TP, a especificidade e sensibilidade foram respectivamente 72 e 89 por cento. A especificidade da atividade de ADA para a TP foi melhor aplicada no diagnóstico diferencial entre derrame pericárdico de origem indeterminada. O presente estudo demonstrou o valor clínico da mensuração da atividade de ADA no diagnóstico de TP.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Adenosine Deaminase/analysis , Pericardial Effusion/enzymology , Pericarditis, Tuberculous/diagnosis , Biomarkers/analysis , Case-Control Studies , Heart Neoplasms/diagnosis , Heart Neoplasms/enzymology , Pericarditis, Tuberculous/enzymology , Pericarditis/diagnosis , Pericarditis/enzymology , Reproducibility of Results , Retrospective Studies , Sensitivity and Specificity
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