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Heparin-induced thrombocytopenia (HIT) is the development of thrombocytopenia (a low platelet count), due to the administration of various forms of heparin, an anticoagulant. HIT predisposes to thrombosis (the abnormal formation of blood clots inside a blood vessel ).
Thrombotic thrombocytopenic purpura (TTP) initially presents with a range of symptoms that may include severe thrombocytopenia (platelet count usually < 30,000/mm³), microangiopathic hemolytic anemia (evidenced by schistocytes in the blood smear), and various clinical signs such as petechiae, purpura, neurologic symptoms, myocardial ischemia ...
Heparin-induced thrombocytopenia (HIT) is due to an immune system reaction against the anticoagulant drug heparin (or its derivatives). [1] Though it is named for associated low platelet counts, HIT is strongly associated with risk of venous and arterial thrombosis. [19]
Argatroban (as well as the hirudins) is used for heparin-induced thrombocytopenia, a relatively infrequent yet serious complication of heparin treatment that requires anticoagulation (as it increases both arterial and venous thrombosis risk) but not with the causative agent, heparin. [1]
Other causes of thrombocytopenia which may occur in pregnancy, such as drug induced thrombocytopenia, hereditary thrombocytopenia and pseudothrombocytopenia should also be ruled out. [63] ITP can be difficult to distinguish from gestational thrombocytopenia (which is by far the most common cause of thrombocytopenia in pregnancy). Unlike ITP ...
Blood tests [2] Differential diagnosis: Thrombotic thrombocytopenic purpura, hemolytic-uremic syndrome [1] Treatment: Directed at the underlying condition [3] Medication: Platelets, cryoprecipitate, fresh frozen plasma, heparin [2] Prognosis: 20–50% risk of death [4] Frequency: 1% of people admitted to hospital [4]
Smaller risk of heparin-induced thrombocytopenia, a potential side effect of heparin. Hepatin's anticoagulant effects are typically reversible with protamine sulfate, while protamine's effect on LMWH is limited. LMWH has less of an effect on thrombin than heparin, but about the same effect on Factor Xa.
Cancer-associated thrombosis can result from: (1) stasis, i.e., direct pressure on blood vessels by the tumor mass, poor performance status, and bed rest following surgical procedures; (2) iatrogenic, due to treatment with antineoplastic medications; and (3) secretion of heparanase from malignant tumors that results in degradation of endogenous ...