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Prueba del llenado capilar ungueal - Overview

Nombres alternativos

Prueba de palidez de la uña; Tiempo del llenado capilar

Definición:

Es una prueba rápida que se realiza sobre los lechos ungueales para vigilar la deshidratación y la cantidad de flujo sanguíneo al tejido.

Forma en que se realiza el examen:

Se aplica presión sobre el lecho ungueal hasta que éste se torne blanco, lo que indica que la sangre ha sido forzada a salir del tejido, lo cual se denomina palidez. Una vez que el tejido ha palidecido, se quita la presión.

Mientras el paciente sostiene la mano por encima del corazón, el médico mide el tiempo que le lleva a la sangre regresar al tejido, indicado por el retorno del color rosado a la uña.

Preparación para el examen:

Quite el esmalte de color de las uñas antes de este examen.

Lo que se siente durante el examen:

Habrá poca presión sobre el lecho ungueal, lo cual no debe causar molestia.

Razones por las que se realiza el examen:

El oxígeno, elemento necesario para que los tejidos sobrevivan, es llevado a las diversas partes del cuerpo por parte del sistema sanguíneo (vascular).

Este examen mide qué tan bien funciona el sistema vascular en las manos y los pies, las partes del cuerpo que están más distantes del corazón.

  • Reviewed last on: 5/30/2011
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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