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One common definition of thrombocytopenia requiring emergency treatment is a platelet count below 50,000/μL. [5] Thrombocytopenia can be contrasted with the conditions associated with an abnormally high level of platelets in the blood – thrombocythemia (when the cause is unknown), and thrombocytosis (when the cause is known).
Pseudothrombocytopenia (PTCP) or spurious thrombocytopenia is an in-vitro sampling problem which may mislead the diagnosis towards the more critical condition of thrombocytopenia. The phenomenon may occur when the anticoagulant used while testing the blood sample causes clumping of platelets which mimics a low platelet count. [ 1 ]
The differential diagnosis for Congenital amegakaryocytic thrombocytopenia includes thrombocytopenia-absent radius syndrome and Wiskott-Aldrich syndrome. Congenital amegakaryocytic thrombocytopenia is distinguished from thrombocytopenia-absent radius syndrome on the basis of skeletal hypoplasia in the arms.
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 ...
Scientific literature sometimes excludes thrombocytosis from the scope of thrombophilia by definition, [4] but practically, by the definition of thrombophilia as an increased predisposition to thrombosis, [5] [6] thrombocytosis (especially primary thrombocytosis) is a potential cause of thrombophilia.
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 ).
Diagnosis is done by the help of symptoms and only blood count abnormality is thrombocytopenia. [citation needed]
Thrombocytopenia – a deficiency of platelets Pancytopenia – when all three types of blood cells; red blood cells, white blood cells, and platelets, are all deficient. This is a life-threatening disorder that is a characteristic of aplastic anemia .
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