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Frotis de aspirado de líquido duodenal - Overview

Nombres alternativos

Frotis de líquido aspirado del duodeno

Definición:

Es un examen del líquido tomado del duodeno para buscar una posible infección. El médico generalmente busca ya sea Giardia o estrongiloides, que son parásitos.

Forma en que se realiza el examen:

La muestra se obtiene por medio de una esofagogastroduodenoscopia ( EGD). El médico pasa una sonda de fibra óptica flexible a través de la boca y el estómago hasta el duodeno con el fin de observar los órganos y obtener muestras. Si la sonda se pasa sin EGD, su posición en el cuerpo se puede confirmar por medio del pH (equilibrio ácido básico) del líquido obtenido o por medio de rayos X.

Cuando la sonda o la fibra óptica está en la posición apropiada, se succiona líquido desde el duodeno. El líquido se coloca en un portaobjetos de microscopio y se tiñe para su análisis.

Preparación para el examen:

No coma ni beba nada, ni qiquiera agua, durante 12 horas antes del examen.

Lo que se siente durante el examen:

Se puede experimentar una sensación de náuseas a medida que la sonda pasa, pero el procedimiento generalmente no es doloroso.

Razones por las que se realiza el examen:

El examen se hace para diagnosticar una infección del intestino delgado, pero sólo rara vez es necesario. En la mayoría de los casos, este examen se realiza únicamente cuando no se ha podido hacer un diagnóstico mediante un examen coprológico o una prueba del hilo (enterotest ).

  • 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.

Kazura JW. Nematode infections. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 378.

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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