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Deficiencia del factor II - Overview

Nombres alternativos

Hipoprotrombinemia; Deficiencia de protrombina

Definición:

Es un problema de coagulación de la sangre que ocurre cuando hay una falta de una sustancia (protrombina) que se necesita para que la sangre coagule.

Causas:

Cuando uno sangra, el cuerpo inicia una serie de reacciones que ayudan a que la sangre se coagule, lo cual se denomina cascada de la coagulación. El proceso involucra proteínas especiales, llamadas factores de coagulación. Cuando falta uno o más de estos factores de coagulación, generalmente hay una probabilidad más alta de sangrado.

Este trastorno ocurre cuando el cuerpo no tiene suficiente factor II, una importante proteína en la coagulación de la sangre. La deficiencia del factor II que se transmite de padres a hijos (hereditaria) es muy poco frecuente. Ambos padres deben ser portadores para transmitírselo a sus hijos. El hecho de tener un antecedente familiar de un trastorno hemorrágico es un factor de riesgo potencial.


Proceso del coagulación de la sangre

Con mucha frecuencia, la deficiencia del factor II es causada por:

  • Reviewed last on: 2/28/2011
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and 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

Gailani D, Neff AT. Rare coagulation factor deficiencies. In: Hoffman R, Benz EJ Jr., Shattil SJ, et al, eds. Hoffman Hematology: Basic Principles and Practice. 5th ed. Philadelphia, Pa: Churchill Livingstone Elsevier;2008:chap 127.

Kessler C. Hemorrhagic disorders: Coagulation factor deficiencies. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 180.

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