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The condition of having an abnormally small number of platelets in the circulating blood.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a decrease in the number of platelets to fewer than 200,000 per mm3 in the peripheral blood. It may result from the redistribution of platelets in the bloodstream or from hemorrhage. Other causes are the intensified loss of platelets associated with thrombocytopenic purpura, splenomegaly, disseminated intravascular thrombosis, and the use of certain drugs. Thrombocytopenia may also result from disturbance of platelet formation in the bone marrow in leukemia or aplastic anemia, and from ionizing radiation. Blood clotting is impaired in thrombocytopenia, resulting in a tendency of the mucous membranes to bleed, as well as in hemorrhaging and the appearance of petechiae in the internal organs. Bleeding usually becomes continuous when the platelet count falls below 20,000–30,000 per mm3 of blood. Therapy involves treatment of the underlying disease, administration of hemostatics, and transfusion of platelets.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Shah et al., "Drug-induced thrombocytopenia: a systematic review of published case reports," Annals of Internal Medicine, vol.
HIT was considered separately from drug-induced thrombocytopenia in our study.
[16], Quinine is a common cause of drug-induced thrombocytopenia and the most common cause of drug-induced thrombotic microangiopathy.
Key words: Drug-induced thrombocytopenia, Fenofibrate, Adverse drug reaction
Drug-induced thrombocytopenia (DIT) is an increasingly common cause of isolated thrombocytopenia, a fact that should not be surprising considering today's ever-expanding pharmacopeia.
Since drug-induced thrombocytopenia represents only a minority of such cases in the ICU, it has been suggested that clinicians should regard evolving thrombocytopenia in critically ill patients as an early warning sign of sepsis, rather than attributing it to medications (21).
describe the mechanism of drug-induced thrombocytopenia and the means for its detection and cure.
The ASH defined ITP as [2] isolated thrombocytopenia with no clinically apparent associated conditions or other causes of thrombocytopenia (e.g., HIV infection, systemic lupus erythematosus, lymphoproliferative disorders, myelodysplasia, agammaglobulinemia or hypogammaglobulinemia, drug-induced thrombocytopenia, alloimmune thrombocytopenia, congenital hereditary nonimmune thrombocytopenia) .
Another use of flow cytometry is the detection of platelet autoantibodies in patients with idiopathic thrombocytopenic purpura and drug-induced thrombocytopenias, which is sensitive but not specific.

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