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Several studies have now assessed the benefit of using preventive platelet transfusions in adults with dengue who have profound thrombocytopenia (platelet count < 20 x 10 9 /L. [17] There is no evidence that this reduce the risk of bleeding, but there is evidence that they increase the risk of harm due to the platelet transfusion (increased ...
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). [6] [7]
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 ...
ITP can be difficult to distinguish from gestational thrombocytopenia (which is by far the most common cause of thrombocytopenia in pregnancy). Unlike ITP, the platelet count in gestational thrombocytopenia rarely goes below 100,000, and a platelet count below 80,000 is even more rare (seen in less than 0.1% of cases of gestational ...
Those with active bleeding or prior to surgery should have a threshold of 50,000/μL. An unconfirmed, but helpful, way to determine whether a patient is recovering from chemotherapy-induced thrombocytopenia is to measure "reticulated" platelets, or young RNA-containing platelets, which signifies that the patient is starting to make new platelets.
The 4T score for heparin-induced thrombocytopenia [9] [10] Thrombocytopenia 2 points if the fall in platelet count is >50% of the previous value, AND the lowest count (nadir) is 20–100 × 10 9 /liter 1 point if the fall is 30–50% or the nadir is 10–19 × 10 9 /liter No points if the fall is less than 30% or the nadir is <10 × 10 9 /liter ...