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Prueba de sobrecarga ácida (pH) - Overview

Definición:

La prueba de sobrecarga ácida (pH) mide la capacidad de los túbulos renales para acidificar la orina cuando hay un aumento en la acidez del plasma.

Ver también: pH urinario

Forma en que se realiza el examen:

A usted se le solicitará tomar cápsulas de cloruro de amonio por vía oral durante 3 días. Después se toman una muestra de orina y otra de sangre. (La muestra de sangre es necesaria para mostrar que el cloruro de amonio acidificó ligeramente la sangre.) En el laboratorio se mide el nivel de ácido encontrado en ambas muestras.

Para mayor información sobre la forma de obtener las muestras de sangre y orina, ver:

Preparación para el examen:

El médico le solicitará tomar cápsulas de cloruro de amonio por vía oral durante 3 días antes del examen.

Lo que se siente durante el examen:

Cuando se inserta la aguja para extraer la sangre, algunas personas sienten un dolor moderado, mientras que otras sólo sienten un pinchazo o sensación de picadura. Posteriormente, puede haber algo de sensación pulsátil.

Razones por las que se realiza el examen:

El examen se hace para ver qué tan bien controlan los riñones el estado ácido-básico del cuerpo.

  • Reviewed last on: 12/2/2009
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Herbert Y. Lin, MD, PHD, Nephrologist, Massachusetts General Hospital; Associate Professor of Medicine, Harvard Medical School. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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