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Prueba del hilo - Overview

Nombres alternativos

Examen para parásitos duodenales (enterotest)

Definición:

Es un examen que consiste en tragarse una cuerda o hilo para obtener una muestra de la parte superior del intestino delgado. La muestra se analiza luego para detectar la presencia de parásitos intestinales. Esta prueba rara vez se utiliza en los Estados Unidos.

Forma en que se realiza el examen:

Usted se traga un hilo con una cápsula cargada de gelatina en el extremo. El hilo se extrae cuatro horas más tarde. Se examina bajo el microscopio cualquier rastro de bilis, sangre o mucosidad adherida al hilo en búsqueda de células y parásitos o sus huevos.

Preparación para el examen:

A usted se le puede solicitar que no coma ni beba nada durante 12 horas antes del examen.

Lo que se siente durante el examen:

A usted le puede parecer difícil tragarse el hilo y puede sentir una urgencia de vomitar cuando lo extraen.

Razones por las que se realiza el examen:

El examen se realiza cuando el médico sospecha una infestación parasitaria, pero no se encontraron parásitos en una muestra de materia fecal.

  • Reviewed last on: 4/18/2010
  • Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; George F Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Semrad CE, Powell DW. Approach to the patient with diarrhea and malabsorption. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 143.

Sears CL. Giardiasis. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 372.

Hill DR, Nash TE. Giardia lamblia. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 280.

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