Utilidad del citoquímico y la coloración de Gram en muestras de orina en el diagnóstico de las infecciones del tracto urinario en pacientes hospitalizados

Jaime Alberto López Vargas, Mónica Cecilia Cuartas Trujillo, Olga Lucía Molina Upegui, Ana Cristina Restrepo Ceballos, Claudia Yarely Maya Carmona, Sergio Jaramillo Velásquez, Jorge Hernando Donado Gómez

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

3 Citas (Scopus)

Resumen

OBJECTIVE: To evaluate the usefulness of urinalysis and of urine Gram stain in the diagnosis of urinary tract infection in hospitalized patients. DESIGN AND SAMPLE: Urinalysis and Gram stain of non centrifuged urine were carried out according to the requests of physicians, in specimens submitted to the laboratory for urine culture. When this modality of Gram stain had not been requested, it was done with urine sediment. Results were compared with those of the culture. RESULTS: Ten thousand nine hundred and seventeen urine cultures were carried out, as well as 6.762 urinalyses, 2.762 Gram stains of non centrifuged urine, and 8.008 Gram stains of urine sediments. In comparison with the urine culture, urinalyses had 99% sensitivity, 51% specificity, 60% positive predictive value, and 98% negative predictive value. Gram stain of non centrifuged urine had 98% sensitivity, 73% specificity, 82% positive predictive value, and 97% negative predictive value. Gram stain of urine sediment had 95% sensitivity, 78% specificity, 67% positive predictive value, and 97% negative predictive value. CONCLUSIONS: Urinalysis, following well defined criteria, and Gram stain have high negative predictive values, that may allow to use them as screening tests to determine the need to request urine culture.

Título traducido de la contribuciónUsefulness of urinalysis and urine Gram stain in the diagnosis of urinary tract infection in hospitalized patients
Idioma originalEspañol
Páginas (desde-hasta)377-384
Número de páginas8
PublicaciónIatreia
Volumen18
N.º4
EstadoPublicada - dic. 2005
Publicado de forma externa

Palabras clave

  • Bacteriuria
  • Nitrites
  • Urinalysis
  • Urine culture
  • Urine Gram stain

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