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High platelet counts can occur in patients with polycythemia vera (high red blood cell counts), and is an additional risk factor for complications. [citation needed] A very small number of people report symptoms of erythromelalgia, a burning sensation and redness of the extremities that resolves with cooling, or aspirin or both. [3]
Hydroxycarbamide, interferon-α and anagrelide can lower the platelet count. Low-dose aspirin is used to reduce the risk of blood clot formation unless the platelet count is very high, where there is a risk of bleeding from the disease, and hence this measure would be counter-productive as aspirin-use increases the risk of bleeding. [3] [15 ...
Giant platelet disorder; Two giant platelets (stained purple) are visible in this image from a light microscope (40×) from a peripheral blood smear surrounded by red blood cells. One normal platelet can be seen in the upper left side of the image (purple) and is significantly smaller in size than the red blood cells (stained pink). Specialty ...
In oncology, polycythemia vera (PV) is an uncommon myeloproliferative neoplasm in which the bone marrow makes too many red blood cells. [1] The majority of cases [2] are caused by mutations in the JAK2 gene, most commonly resulting in a single amino acid change in its protein product from valine to phenylalanine at position 617.
In a typical set of rules, a platelet donor must weigh at least 50 kg (110 lb) and have a platelet count of at least 150 x 10 9 /L (150,000 platelets per mm³). [2] One unit has greater than 3×10 11 platelets. Therefore, it takes 2 liters of blood having a platelet count of 150,000/mm³ to produce one unit of platelets.
SPS is diagnosed by demonstrating platelet hyperaggregability. In a lab test called aggregometry, platelet stickiness is stimulated with epinephrine (EPI) and/or adenosine diphosphate (ADP). [12] This test is not possible for patients being treated with acetylsalicylic acid until that substance has sufficiently cleared from their system.
Findings may include low platelets, low fibrinogen, high INR, or high D-dimer. [2] Treatment is mainly directed towards the underlying condition. [2] [3] Other measures may include giving platelets, cryoprecipitate, or fresh frozen plasma. [2] Evidence to support these treatments, however, is poor. [2] Heparin may be useful in the slowly ...
People with HUS commonly exhibit the symptoms of thrombotic microangiopathy (TMA), which can include abdominal pain, [14] low platelet count, [15] elevated lactate dehydrogenase LDH, (an enzyme released from damaged cells, and which is therefore a marker of cellular damage) [16] decreased haptoglobin (indicative of the breakdown of red blood ...