Active clinical trials for "Thrombocytopenia"

About 40 % of the patients in reanimation are thrombopenics and the causes are not well known (reduction in platelet's production, increase in their destruction...). This protocol studies the epidemiology of thrombopenia for these patients and the impacts of cost and mortality in order to bring patients best medical cares.

Coagulation disorders and thrombocytopenia are common in patients with septic shock. Despite the clinical relevance of sepsis-induced thrombocytopenia, few studies have focused on the prediction of thrombocytopenia in this setting. The aim of this study was to evaluate whether platelets aggregometry and markers of platelets activation, such as mean platelet volume or platelet volume distribution width, could predict sepsis-induced thrombocytopenia in patients with septic shock and normal platelet count on the day of diagnosis.

Immune thrombocytopenia (ITP) is a rare autoimmune disease (annual incidence: 3-4/105 inhabitants) leading to an increased risk of spontaneous bleeding. ITP is said "primary" when not associated to other systemic disease (lymphoma, systemic autoimmune disease, chronic infectious disease…). First-line treatment is based on corticosteroids. Intravenous immunoglobulin (IVIg) is added in case of serious bleeding. In about 70% of adult cases, ITP becomes persistent or chronic (lasting >3 months and >12 months, respectively). Second-line treatments are then indicated. Among them, thrombopoietin-receptor agonists (TPO-RAs), romiplostim and eltrombopag are increasingly used. Splenectomy is used as ultimate treatment. Paradoxically, the risk of thrombosis is higher in ITP patients in comparison with the general population, due to the release of young hyperactive platelets from bone marrow. The incidence of thrombosis in ITP patients has been estimated between 0.5 and 3/100 patients-years. However, risk factors for thrombosis in ITP are not known, except splenectomy that is used in very few patients now. The role of other ITP treatments in thrombosis occurrence has been evoked, particularly for corticosteroids and IVIg. TPO-RAs have been associated with a risk of thrombosis in clinical trials and pharmacovigilance studies, even in case of low or normal platelet count. However, this risk has not been measured in the real-life practice, adjusted for other risk factors for thrombosis.

Multicentre (Ottawa and Halifax) prospective cohort study using a diagnostic approach in patients clinically suspected to have HIT that combines pretest probability assessment with quantitative interpretation of anti-PF4 assay.

This is a retrospective analysis of children (≤21years old) who received clinical treatment with either Romiplostim or Eltrombopag at 2 medical centers from 2009-2013. The children included in this study were from Weill Medical College of Cornell University, New York, New York and Children's Hospital Orange County, Orange, California

HIT-RADIO is a study of patients who had a positive heparin PF-4 antibody test between 1/21/2008 and 9/25/2008 at selected hospitals. The study will collect and analyse information that is already in the patients' medical records. Information about laboratory values (such as platelet counts), treatments (such as medications), and outcomes (such as blood clots, amputation, and death) will be included.

To utilise extended platelet parameters in order to individuate Immune Thrombocytopenia (ITP) from hypo-proliferative causes of thrombocytopenia. To develop the clinical potential of the extended platelet parameters as they pertain to distinguishing different causes of thrombocytopenia from one another. To test the hypothesis that mean platelet component (MPC) and mean platelet mass (MPM) might distinguish between thrombocytopenia related to bone marrow dysfunction and immune mediated destruction of platelets.

Thrombocytopenia (low platelet count) is common in the neonatal intensive care unit. Commonly, the decision of when to transfuse platelets is based on platelet number. Recently, Christensen et al (2006) proposed using transfusion guidelines based on platelet mass rather than platelet number. By using platelet size as a guide of when to give platelets, we may be able to decrease the amount platelet transfusions needed. This study is investigating using platelet size rather than platelet number as a guideline for transfusing platelets in infants who are hospitalized in a NICU (neonatal intensive care unit). After obtaining parental informed consent, thrombocytopenic infants will be randomized to one of two groups. 1: Transfusion based on platelet number; 2: transfusion based on a combination of platelet number and platelet mass. In each group the decision to transfuse platelets will be made using a slightly different, yet strict set of transfusion rules. The objective is to determine the feasibility, rate of bleeding complications and compliance of transfusing neonates based on platelet mass rather than platelet number. The investigators hypothesize that transfusing platelets based on platelet mass will not increase bleeding complications and will reduce the number of transfusions in thrombocytopenic neonates.

Heparin-induced thrombocytopenia (HIT) is an immune-mediated adverse drug reaction to heparin products which results in a prothrombotic state. Heparin-induced thrombocytopenia generally occurs several days after the start of unfractionated heparin or low molecular weight heparin and is diagnosed based on clinical presentation, and presence of thrombocytopenia. HIT has an incidence of 0.1% to 5% and if recognized early can help prevent major complications. As of November 2014, the responsibility for documenting heparin allergies in the electronic medical record (EMR) has shifted from the physician/medical resident to the pharmacy resident. The purpose of this study is to compare the number, rate, and appropriateness of heparin allergy documentation in order to help decrease adverse medical events related to heparin.

In a prospective observational study the incidence of Heparin-induced Thrombocytopenia (HIT) Type 2 after orthotopic liver transplantation, associated factors, and hemostaseological findings in thrombocytes and anti-body patterns is going to be investigated.