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Rev. invest. clín ; 59(2): 153-160, mar.-abr. 2007. ilus, tab
Article in Spanish | LILACS | ID: lil-632360

ABSTRACT

The liver plays a central role in the clotting process. In this organ are sintetizated the major part of the coagulation factors. Historically, was considered that alteration in liver function causes important bleeding disorders. However, actual evidence is not in agreement with this asseveration. Decreased synthesis of clotting and inhibitor factors, decrease clearance of activated factors, quantitative and qualitative platelet defects, hyperfibrinolysis and intravascular coagulation are some of the defects observed in liver diseases. Thrombotic events, even if rare in cirrhotic patients, occur manly in the portal and mesenteric veins. The aim of the present work is to review the present evidence in coagulation disorders and liver disease.


El hígado participa de manera importante en el proceso de la coagulación. En él se sintetizan la mayor parte de los factores pro- y anticoagulantes. De manera histórica se ha considerado que las alteraciones en la función de este órgano provoca trastornos predisponentes para eventos de sangrado. La evidencia actual pone en tela de juicio esta aseveración. En los casos de hepatopatía se hacen evidentes alteraciones en el número y funcionamiento de las plaquetas, disminución de la síntesis de factores de la coagulación, disfibrinogenemia, alteraciones en la fibrinólisis, deficiencia de vitamina K y cambios similares a los ocurridos en la coagulación intravascular diseminada (CID). El presente trabajo está dirigido a revisar los conocimientos actuales respecto a las alteraciones de la coagulación presentes en los pacientes con hepatopatías.


Subject(s)
Humans , Blood Coagulation Disorders/etiology , Liver Cirrhosis/complications , Afibrinogenemia/etiology , Blood Coagulation Disorders/physiopathology , Blood Coagulation Factors/biosynthesis , Blood Platelets/physiology , Disseminated Intravascular Coagulation/etiology , Disseminated Intravascular Coagulation/physiopathology , Fibrinolysis , Hemorrhagic Disorders/etiology , Hemorrhagic Disorders/physiopathology , Liver Cirrhosis/physiopathology , Mesenteric Veins , Portal Vein , Thrombophilia/etiology , Thrombophilia/physiopathology , Thrombopoietin/biosynthesis , Thrombopoietin/deficiency , Thrombosis/etiology , Vitamin K Deficiency/etiology
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