Active clinical trials for "Blood Coagulation Disorders"

PURPOSE: to determine the effect of aerobic exercise training on sex hormones and coagulation factors in postmenopausal elderly women BACKGROUND: Cardiovascular disease (CVD) is the largest cause of death in women, and the risk of developing CVD increases after menopause . Because thrombosis is thought to be a cause of most acute cardiovascular events, abnormalities in endogenous coagulation and fibrinolysis may play an important role in the risk of an acute cardiovascular event. Aging is also associated with adverse changes in both coagulation and fibrinolysis. For instance, postmenopausal women exhibit higher fibrinogen levels and lower levels of endogenous fibrinolysis. Physical activity and physical fitness have consistently been linked to lower CVD rates in women. In fact, an inverse association between physical activity and total mortality, as well as a 50% reduction in risk of myocardial infarction, has been observed in physically active postmenopausal women. In addition to the numerous other benefits provided by regular physical activity, one of the mechanisms mediating the cardioprotective effect may be changes in the hemostatic system, particularly fibrinolysis HYPOTHESES: Aerobic exercises may have no effect on sex hormones and coagulation factors in elderly postmenopausal women RESEARCH QUESTION: Do aerobic exercises effect on sex hormones and coagulation factors in elderly postmenopausal women in response to exercises?

To explore the hypothesis that leg ulcers are associated with hypercoagulable states, the CLUE study will evaluate patients with connective tissue disease associated leg ulcers, to identify risk factors (especially hypercoagulability and immunologic characteristics), characterize pathogenesis, predict response to therapy, and assess the impact of lower extremity ulcers on quality of life.

This study is conducted in Japan. The aim of this observational study is to evaluate the long-term safety and efficacy of activated recombinant human factor VII (NovoSeven®) in subjects with congenital FVII deficiency.

This study is conducted in North America. The purpose of this study is to evaluate the occurrence and severity of bleeding in brain injury and to identify important safety issues following traumatic brain injury.

Effective treatment and prevention strategies for childhood stroke and porencephaly can only be developed once the causes are understood. There is increasing evidence that inherited and acquired coagulation abnormalities alone or in combination with environmental factors, predispose to arterial and venous thrombosis. Inherited abnormalities of factor V Leiden, prothrombin, protein C, protein S, and antithrombin III may account for many of these thromboses. At present there is little information on the existing distribution of these coagulation anomalies in children with thrombosis. Recent reports also suggest that these clotting abnormalities may be responsible for some instances of intracranial hemorrhage, porencephaly, cerebral palsy and fetal death. This study will measure the frequency of several coagulation factor abnormalities (factor V Leiden, prothrombin 20210A, protein C, protein S, antithrombin III, and antiphospholipid antibodies) in children with a history of porencephaly and stroke, and will compare these to the prevalence of these mutations in population controls and family members. We will also describe the exogenous conditions which in concert with these coagulation factors, may have led to the development of thrombosis in these children....

A new thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) with improved technology was developed. This device has an improved new-generation viscoelastometric testing technique and enables the detection and assessment of factor deficiencies, low fibrinogen, platelet contribution (to whole blood coagulation), heparin and direct oral anticoagulants effects, fibrinolysis and antifibrinolytic drugs. This study aims to determine reference ranges for the ClotPro device for all paediatric age groups.

This study evaluates the incidence of postoperative bleeding after oral surgical procedures in patients taking direct oral anticoagulants and in patients taking vitamin K antagonists.

Coagulopathy is one of the most significant prognostic factors in patients with COVID-19 and is associated with increased mortality and admission to critical care. Most commonly observed coagulopathy in patients hospitalized with COVID-19 (COVID-19-associated coagulopathy) is characterized by increased D-dimer and fibrinogen levels. 71% of patients who did not survive hospitalization reported to have developed disseminated intravascular coagulation (DIC) compared to 0.6% of survivors.

The purporse of this study is evaluate whether fibrinogen concentrate reduces postoperative bleeding in pediatric cardiac surgery with cardiopulmonary by-pass.

Early identification of trauma patients in need for Damage Control Resuscitation (DCR) has potential to be beneficial for general emergency units that are not expected to be ready for this rare situation 24 hours per day, 7 days per week. It could also be useful for high performing trauma centers to identify such patients earlier and be able to provide earlier adequate treatment. By contrast, initiation of DCR in patients who do not require this aggressive therapy may negatively affect their survival. An early identification of patients who do not require DCR would probably be beneficial (impact on cost-effectiveness and on patients' survival). The evidence of the Trauma Induced Coagulopathy Clinical Score (TICCS) accuracy has been evaluated in several studies but the potential effect of its use on patient outcomes needs to be evaluated. There has never been any evaluation of the impact of a prehospital discrimination of trauma patients with or without the need for DCR. The primary objective of this study is to evaluate the impact on mortality of a prehospital discrimination between trauma patients with or without a potential need for DCR. Secondary objectives include evaluation of the feasibility of such discrimination and its impact on cost-effectiveness. We hypothesize that the information will lead to improved quality of care with reduced mortality and morbidity.