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Examen de drepanocitos - Overview

Nombres alternativos

Examen de hemoglobina S; Sickledex

Definición:

Un examen de drepanocitos busca la hemoglobina anormal en la sangre que causa la anemia drepanocítica.

Forma en que se realiza el examen:

Se necesita una muestra de sangre. Para obtener información sobre la forma como se hace esto, ver el artículo: venopunción .

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:

Este examen se hace para determinar si usted tiene hemoglobina anormal que causa enfermedad y rasgo drepanocítico.

En la enfermedad drepanocítica, una persona tiene dos genes anormales para la hemoglobina S; mientras que alguien con rasgo drepanocítico sólo tiene uno de estos genes anormales y no presenta síntomas o sólo síntomas leves.

Este examen no establece la diferencia entre estos dos trastornos, por lo que se hará otro examen, llamado electroforesis de hemoglobina.

  • Reviewed last on: 2/28/2011
  • Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Saunthararajah Y, Vichinsky EP. Sickle cell disease – clinical features and management. In: Hoffman R, Benz EJ, Shattil SS, et al, eds. Hematology: Basic Principles and Practice. 5th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2008:chap 43.

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