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Jecko Thachil 《Hematology (Amsterdam, Netherlands)》2014,19(3):163-168
Immune thrombocytopenia (ITP) is one of the most common forms of autoimmune disease affecting both adults and children. In recent years, there have been tremendous developments in the understanding of the pathogenesis and treatment of this condition. However, certain concepts related to ITP are worth consideration in view of alternative explanations and evidence available. These include (i) ITP is a disorder where thrombocytopenia is induced by autoantibodies against platelets or megakaryocytes, (ii) the mechanism of action of corticosteroids in ITP is through suppression of these autoantibodies, (iii) splenectomy is effective in ITP since spleen is the site of platelet destruction, and (iv) splenectomized ITP patients are at a major risk of infections. 相似文献
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Sue Pavord Jecko Thachil Beverley J. Hunt Mike Murphy Gillian Lowe Mike Laffan Mike Makris Adrian C. Newland Drew Provan John D. Grainger Quentin A. Hill 《British journal of haematology》2020,189(6):1038-1043
This document aims to provide practical guidance for the assessment and management of patients with thrombocytopenia, with a particular focus on immune thrombocytopenia (ITP), during the COVID-19 pandemic. The intention is to support clinicians and, although recommendations have been provided, it is not a formal guideline. Nor is there sufficient evidence base to conclude that alternative approaches to treatment are incorrect. Instead, it is a consensus written by clinicians with an interest in ITP or coagulation disorders and reviewed by members of the UK ITP forum. 相似文献
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Toshiaki Iba Jerrold H. Levy Marcel Levi Jecko Thachil 《Journal of thrombosis and haemostasis》2020,18(9):2103-2109
The COVID‐19 pandemic has become an urgent issue in every country. Based on recent reports, the most severely ill patients present with coagulopathy, and disseminated intravascular coagulation (DIC)‐like massive intravascular clot formation is frequently seen in this cohort. Therefore, coagulation tests may be considered useful to discriminate severe cases of COVID‐19. The clinical presentation of COVID‐19‐associated coagulopathy is organ dysfunction primarily, whereas hemorrhagic events are less frequent. Changes in hemostatic biomarkers represented by increase in D‐dimer and fibrin/fibrinogen degradation products indicate the essence of coagulopathy is massive fibrin formation. In comparison with bacterial‐sepsis‐associated coagulopathy/DIC, prolongation of prothrombin time, and activated partial thromboplastin time, and decrease in antithrombin activity is less frequent and thrombocytopenia is relatively uncommon in COVID‐19. The mechanisms of the coagulopathy are not fully elucidated, however. It is speculated that the dysregulated immune responses orchestrated by inflammatory cytokines, lymphocyte cell death, hypoxia, and endothelial damage are involved. Bleeding tendency is uncommon, but the incidence of thrombosis in COVID‐19 and the adequacy of current recommendations regarding standard venous thromboembolic dosing are uncertain. 相似文献
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An elderly, mildly demented, hypertensive male patient developed hypersomnolence on administration of propranolol for treatment of hypertension; no other cause for hypersomnolence was detected. Upon replacement of propranolol with atenolol, he felt better but continued to be quite somnolent. When atenolol was discontinued, he reported to have lack of sleep. On readministration of subtherapeutic doses of the same beta-adrenergic blocking agents, he once again experienced excessive sleepiness. By discontinuing beta-blocking agents and introducing captopril, he felt much better, became pleasant and talkative, and blood pressure was well controlled. Beta antagonists are important drugs in the management of many cardiovascular problems. Propranolol, a lipophilic beta-blocking agent, and atenolol, a hydrophilic beta-blocking agent, are two of the major agents currently used clinically in the United States. Numerous neuropsychiatric side-effects of the beta-adrenergic blocking drugs have been reported, but hypersomnolence is not readily recognized as one of them. 相似文献
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