Predictors of Trypanosoma cruzi PCR positivity in patients with chronic Chagas disease



Título del documento: Predictors of Trypanosoma cruzi PCR positivity in patients with chronic Chagas disease
Revue: Memorias do Instituto Oswaldo Cruz
Base de datos: PERIÓDICA
Número de sistema: 000459431
ISSN: 0074-0276
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Instituciones: 1Fundacao Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro. Brasil
2Fundacao Oswaldo Cruz, Instituto Nacional de Infectologia Evandro Chagas, Rio de Janeiro. Brasil
3Universidade Federal Fluminense, Hospital Universitario Antonio Pedro, Niteroi, Rio de Janeiro. Brasil
Año:
Volumen: 118
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés A positive Trypanosoma cruzi polymerase chain reaction (PCR) is associated with a worse prognosis in patients with chronic Chagas disease (CD). OBJECTIVES To study the association of clinical, electrocardiographic, and echocardiographic characteristics and biomarker blood levels with positive T. cruzi PCR in chronic CD. METHODS This is a single-centre observational cross-sectional study. Positive T. cruzi PCR association with clinical, electrocardiographic, and echocardiographic characteristics, and biomarker blood levels were studied by logistic regression analysis. p values < 0.05 were considered significant. FINDINGS Among 333 patients with chronic CD (56.4% men; 62 ± 10 years), T. cruzi PCR was positive in 41.1%. Stepwise multivariate logistic regression showed an independent association between positive T. cruzi PCR and diabetes mellitus {odds ratio (OR) 0.53 [95% confidence interval (CI) 0.30-0.93]; p = 0.03}, right bundle branch block [OR 1.78 (95% CI 1.09-2.89); p = 0.02], and history of trypanocidal treatment [OR 0.13 (95% CI 0.04-0.38); p = 0.0002]. Among patients with a history of trypanocidal treatment (n = 39), only four (10%) patients had a positive T. cruzi PCR. MAIN CONCLUSIONS Among several studied parameters, only diabetes mellitus, right bundle branch block, and history of trypanocidal treatment showed an independent association with positive T. cruzi PCR. History of trypanocidal treatment was a strong protective factor against a positive T. cruzi PCR
Disciplinas: Medicina
Palabras clave: Parasitología,
Diagnóstico,
Enfermedad de Chagas,
Técnicas de diagnóstico,
Reacción en cadena de la polimerasa (PCR),
Biomarcadores,
Trypanosoma cruzi
Keyword: Parasitology,
Diagnosis,
Chagas disease,
Diagnostic techniques,
Polymerase chain reaction (PCR),
Biomarkers,
Trypanosoma cruzi
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