Progress Review Heparin-Induced Thrombocytopenia
نویسنده
چکیده
There are two types of heparin-induced thrombocytopenia. Type I is more common, has an early onset, and is mild, transient, and benign. Type I is due to direct heparin-induced platelet aggregation and is rarely associated with thromboembolic sequela. Type II is infrequent, has a late onset, and is more severe. Type II is due to an immune-mediated platelet aggregation caused by IgG and IgM that becomes bound to platelets. In Type II, the antibody titers decline over several months; however, early reexposure can result in a catastrophic secondary immune response. Frequently, Type II is associated with lifeor limb-threatening thromboembolic complications (white clots), including stroke. {Stroke 1989;20:1449-1459)
منابع مشابه
Heparin induced thrombocytopenia
Abstract Background and Objectives Heparin is still a commonly used anticoagulant in prophylaxis and treatment of thromboembolic events. Heparin-induced thrombocytopenia (HIT) is a life-threating adverse drug reaction of heparin. The diagnosis of HIT is made based on two important criteria, firstly clinical evaluation and secondly laboratory testing. In this comprehensive review, the authors w...
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Incidence of Thrombocytopenia Induced by Two Methods of Intravenous Heparin injection in Patients with Acute Coronary Syndrome. H. Nough MD1* , A. Khodadadi Zadeh MSc2, M. Aref 3, A. Esmaieli Nadimi MD1 1- Assisstant Professor of Cardiology, University of Medical Sciences, Rafsanjan, Iran 2- Academic Member, Dept. of Nursing, Faculty of Nursing Midwifery, University of Medical Sci...
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Heparin-induced thrombocytopenia (HIT) is an immune complication of heparin therapy caused by antibodies to complexes of platelet factor 4 (PF4) and heparin. Pathogenic antibodies to PF4/heparin bind and activate cellular FcγRIIA on platelets and monocytes to propagate a hypercoagulable state culminating in life-threatening thrombosis. It is now recognized that anti-PF4/heparin antibodies devel...
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The use of heparin have increased in the last years in hospitalized both as prophylaxis and therapeutic. One of the encounter complications of heparin especially with unfractionated heparin though it can be seen with Low molecular weight heparin is thrombocytopenia which could be transient non immune or more badly the immune mediated type heparin induced thrombocytopenia (HIT). Heparin-induced ...
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