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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).
Consequently, differential diagnosis of these TMA diseases is essential. Both TTP and HUS are characterized by fever, anemia, thrombocytopenia, renal failure, and neurological symptoms. Generally, TTP has higher rates of neurological symptoms (≤80%) and lower rates of renal symptoms (9%) than HUS (10–20% and 90%, respectively). [38]
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 ]
Diagnosis. Diagnosis is done by the help of symptoms and only blood count abnormality is thrombocytopenia. [citation needed] Treatment. This section is empty. You can ...
The risk of neonatal thrombocytopenia is increased with: [66] Mothers with a history of splenectomy for ITP; Mothers who had a previous infant affected with ITP; Gestational (maternal) platelet count less than 100,000/uL; It is recommended that pregnant women with thrombocytopenia or a previous diagnosis of ITP be tested for serum antiplatelet ...
The diagnosis requires the presence of both A criteria together with B3 to B6, or of criterion A1 together with B1 to B6. [14] The criteria are as follows: [14] A1. Platelet count > 400 × 10 3 /μL for at least 2 months. A2. Acquired V617F JAK2 mutation present; B1. No cause for a reactive thrombocytosis normal inflammatory indices; B2.
Giant platelet disorders, also known as macrothrombocytopenia, are rare disorders featuring abnormally large platelets, thrombocytopenia and a tendency to bleeding. Giant platelets cannot stick adequately to injured blood vessel walls, resulting in abnormal bleeding when injured.
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 ).
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