[The validation of a rapid diagnostic method for urinary infection in the school-age population].
Validity of visual reading of a reactive strip is measured, in comparison with automatized reading and the exam of the urinary sediment, in 562 school pupils with ages between 6 and 16 years. Using urine culture as standard reference, sensibility of the leukocyte-esterase (L-E) test, nitrites and red cells was 66.7%, 33.3% and 66.7% respectively, for the visual reading; 66.7%, 33.3% and 33.3% for automatized reading, respectively; and 66.7% for leukocyturia, and 33.3% for hematuria in the urine sediment. Specificity of tests was 84.9%, 99% and 42.7% for L-E, nitrites and red cells, in visual reading; 92.5%, 100% and 80.8% for the same tests in automatized reading, and 94.5% (leukocyturia) and 86.3% (red cells) in the urinary sediment. Validity of these diagnostic methods results different depending on the population they are applied to. Even though the multi-urine test is still the most effective test in a symptomatic population and the less expensive, it would be not recommendable its use as a screening test in a school population with hidden urinary infection.
Pérula de Torres
L A
LA
Unidad docente de Medicina Familiar y Comunitaria de Córdoba, Hospital Regional Universitario Reina Sofía.
de Borja Ranz Garijo
F
F
Martínez de la Iglesia
J
J
Blanco Negredo
A
A
Acasuso Díaz
G
G
Crespo Crespo
A
A
Lechuga Varona
M T
MT
Seco Piñero
M I
MI
D000293:Adolescent; D001437:Bacteriuria / Q000175:diagnosis / Q000652:urine; D002648:Child; D004950:Esterases / Q000652:urine; D005069:Evaluation Studies as Topic; D005260:Female; D006417:Hematuria / Q000175:diagnosis; D006801:Humans; D007962:Leukocytes / Q000201:enzymology; D008297:Male; D008722:Methods; D009573:Nitrites / Q000652:urine; D011934:Reagent Strips; D012680:Sensitivity and Specificity; D014552:Urinary Tract Infections / Q000175:diagnosis* / Q000652:urine; D014556:Urine / Q000166:cytology
D009573:Nitrites; D011934:Reagent Strips; D004950:Esterases
Validación de un método de diagnóstico rápido de infección urinaria en población escolar.