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1979, Revista chilena de pediatría
RESUMEN Se realizó una investigación retrospectiva de 68 pacientes febriles que acudieron a consultorio externo del Centro de Salud Materno Infantil " Santa Isabel " del Distrito El Porvenir, Trujillo-Perú, en el 2005.La finalidad del presente estudio fue establecer si los análisis de sangre, orina y reacción de Widal se complementan para establecer el diagnóstico compatible a fiebre tifoidea.Se realizó: a) Reacción de Widal, b) Análisis de sangre (hemograma) y c) Análisis de orina (color, pH, densidad, leucocitos, hematíes y coloración Gram).Los títulos de anticuerpos para la aglutinina 0 fueron desde 1:40 a 1:320. Los títulos con valor diagnóstico (1:80 a 1:320), presentan en el hemograma una tendencia a la leucopenia y neutrófilos con desviación a la izquierda. Los resultados de los análisis de orina estuvieron dentro de los parámetros normales. De los 68 pacientes febriles, el 25% (17) presentan diagnóstico compatible a fiebre tifoidea. El mayor porcentaje de pacientes con diagnóstico compatible a fiebre tifoidea, ocurrieron durante los cuatro primeros meses del año. El diagnóstico compatible a fiebre tifoidea es mayor en hombres (64,3%) que en mujeres (35,3%). Los títulos altos de reacción de Widal compatibles con fiebre tifoidea, se relacionan con leucopenia y desviación a la izquierda. La enfermedad febril compatible a fiebre tifoidea tiene mayor significancia en los meses de verano. Los hombres presentan diagnóstico compatible a fiebre tifoidea en mayor porcentaje que las mujeres. ABSTRACT We conducted a retrospective investigation of sixty-eigth patients who went to the office outside of the Center for Maternal and Child Health "Santa Isabel" El Porvenir district, Trujillo, Perú, 2005. The purpose of this study was to establish whether the blood tests Widal reaction and urine complement to establish the diagnosis compatible fever tifoidea.Se made: a) Widal reaction, b) blood (blood) and c) Urinalysis (color, pH, density, leukocytes, red blood cells and coloring Gram). The antibody titers were 0 for aglutinina from 1:40 to 1:320. The diagnostic value securities (1:80 to 1:320), presented in a trend of blood leukopenia and neutrophils with deviation to the left. The results of urinalysis were within normal parameters. Of the 68 febrile patients, 25% (17) have a diagnosis consistent typhoid. The highest percentage of patients with typhoid fever compatible occurred during the first four months of the year. The diagnosis compatible typhoid is higher in males (64.3%) than women (35.3%). The titles of senior Widal reaction consistent with typhoid fever, and leucopenia are related to diversion to the left. Febrile illness compatible with typhoid fever has more significance in the summer months. Men diagnosed with typhoid fever in compatible higher percentage than women.
Introduction: Chagas’ disease is caused by the parasite Trypanosoma cruzi and its immunological diagnosis is mainly based on the detection of antibodies against T. cruzi using tests such as the ELISA, the indirect fluorescence antibody test (IFAT) and the indirect hemagglutination test (IHAT). The main disadvantage of the IHAT is the need to prepare sheep erythrocytes, whose availability is limited and they have a short duration once prepared. However, there are alternative tests, such as the direct agglutination test (DAT). Objective: To standardize the direct agglutination test for the diagnosis of Chagas disease.Materials and methods: Trypanosoma cruzi epimastigotes were prepared using two protocols, with and without trypsin treatment. The parasites were stained and optimal conditions for parasitic concentration and serum dilutions were determined. We evaluated the technique using sera from patients with Chagas disease, from healthy individuals and from individuals with other parasitic diseases. Results: The optimal parasitic concentration was 500 x 106 parasites/ml using stained parasites without trypsin treatment. The optimal serum dilutions were 1/25, 1/50 y 1/100 and the cut-off point was the 1/50 dilution. The diagnostic indices for the standardized technique were as follows: Sensitivity, 94.3% (95% CI: 79.5-99.0) and specificity, 96.3% (95% CI: 88.8-99.0), with positive and negative predictive values of 91.7% (95% CI: 76.4-97.8) and 97.5% (95% CI: 90.4-99.6), respectively. Cross-reaction was observed only in three sera from individuals with visceral leishmaniasis. The results were compared with those obtained by IHA, ELISA, and IFA, and the concordance rate was 96% and the kappa index, 0.90 (95% CI: 0.81-0.99). Conclusion: The standardized direct agglutination test could be useful for immunodiagnosis of Chagas disease.
1981 •
2000 •
Se trata de un estudio descriptivo que evalúa la concordancia de la técnica de inmunocromatografía para el diagnóstico de la sífilis con la pmeba TP-PA y, de esta forma, conocer su comportamiento y poder demostrar su utilidad para el diagnóstico de la sífilis, pucs sc trata dc una prucba fácil dc realizar. Abstract This is a descriptivc study that cvaluates thc concordancc bctwecn the immunochromatography tcchnique for thc diagnosis of syphilis with thc TP-PA test and, in this way; knowing its bchavior and bcing able to demonstrate its utility for the diagnosis of syphilis, given that it is an easy test to perform.
Medicina y Laboratorio
Enfermedad por aglutininas frías: proceso diagnóstico, tratamiento y seguimiento de un pacienteLa enfermedad por crioaglutininas es una anemia hemolítica autoinmune que se caracteriza, en la gran mayoría de los casos, por la hemólisis mediada por autoanticuerpos de tipo IgM y complemento C3d, contra los antígenos de la membrana del eritrocito, que conduce a hemólisis extravascular con propensión a la trombosis, y que afecta principalmente al sexo femenino y personas mayores. Su diagnóstico se realiza con la prueba de Coombs directo y fraccionado, y la titulación de aglutininas frías >1:64 a 4 °C. Se describe el caso clínico de una mujer de 89 años con un síndrome constitucional y una anemia de 3 años de evolución, en quien se determinó el diagnóstico de enfermedad por aglutininas frías. Asimismo, se describe el abordaje diagnóstico, el tratamiento instaurado, y se hace una breve revisión de la literatura publicada.
2005 •
2009 •
Salud publica de Mexico
Diagnóstico de leptospirosis humana: evaluación de la aglutinación macroscópica en diferentes etapas de la enfermedadSe trata de una paciente femenina de 28 anos de edad, raza negra y procedencia rural con antecedentes de hipertension arterial hace 2 anos sin tratamiento regular, la cual acudio a consulta de Cirugia General del Hospital Regional de Huambo, Angola, por presentar un aumento de volumen visible y palpable en flanco derecho acompanado de dolor abdominal a tipo colico sin defecar por 15 dias precedidos de diarreas amarillas como pure de chicharo. Al ser examinada se encuentra tumor en flanco derecho de 20 centimetros aproximadamente, de bordes irregulares, superficie irregular y consistencia dura, por lo que se ingreso con el diagnostico de oclusion intestinal mecanica para tratamiento quirurgico urgente, encontrandose gran volvulo de todo el ileon con compromiso vascular realizandose reseccion intestinal con yeyunotransversostomia. Palabras clave: volvulo, ileon, obstruccion intestinal.
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