View clinical trials related to Blood Coagulation Disorders.
Filter by: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.
This trial is conducted in Asia, Europe, Middle East, and North America. The primary objective of the trial is to evaluate the safety of Recombinant Activated Factor VII in patients with brain contusions. The secondary objective of the trial is to evaluate the preliminary efficacy of Recombinant Activated Factor VII in preventing early haemorrhagic progression in contusive brain injury.
The purpose of the study is to determine whether oral contraceptives, desmopressin acetate, and/or tranexamic acid are effective in the treatment of women with menorrhagia who are diagnosed with a bleeding disorder.
This trial is conducted in the United States of America (USA). This study compares the effectiveness and safety of NovoSeven® to FEIBA (FEIBA VH) in haemophilia patients with inhibitors being treated for joint bleeds.
This trial is conducted in Africa, Asia, Europe, South America, and the United States of America (USA). The purpose of this study is to evaluate the effectiveness of secondary prophylactic treatment with NovoSeven® in haemophilia A and B patients with inhibitors.
This trial is conducted in the United States of America (USA). The purpose of this trial is to investigate the dose response to recombinant factor VIIa in healthy volunteers when administered for bleed.
This trial is conducted in the United States of America (USA). The purpose of this clinical research trial is to understand how safe and effective Recombinant Activated FVII is for reducing bleeding and blood transfusions in patients undergoing spinal fusion surgery.
To investigate how inflammation, hemostasis, and stress may contribute to neighborhood and individual-level socioeconomic differences in cardiovascular risk.
Congenital bleeding disorders characterized by abnormal platelet granules include Gray Platelet syndrome (GPS; defective alpha-granules), Hermansky-Pudlak syndrome (HPS; defective delta-granules), and combined alpha delta-storage pool deficiency (alpha delta-SPD). Other diseases associated with variable defects in platelet gamma-granules include Chediak-Higashi, Griscelli, Wiskott-Aldrich, and Thrombocytopenia Absent Radius syndromes. These disorders are models for the study of organelle formation in megakaryocytes and platelets. Characteristics of megakaryocytopoiesis in these disorders have not been investigated because megakaryocytes could not be cultured from patients in sufficient quantities for experimental purposes. Recent advances have made it possible to culture megakaryocytes using serum-free media supplemented with recombinant human thrombopoietin (TPO). Such cultured human megakaryocytes, amplified from bone marrow-derived CD34+ stem cells, synthesize and store organellar proteins and produce functional platelets. In this protocol, we plan to obtain bone marrow aspirates from 40 children and adults (ages 2 to 80 years) with GPS, HPS, and related disorders. Patients admitted to the NIH Clinical Center on specific disease-related protocols will be enrolled in this protocol during their routine 3-5 day visits. We will culture megakaryocytes from CD34+ stem cells isolated from bone marrow aspirates. Studies of cultured megakaryocytes will include evaluation of granule membrane and soluble proteins using fluorescent antibodies and immunoelectron microscopy and comparison of RNA and protein expression patterns between normal and patient cells. Precautions will be taken to prevent the primary risk of the bone marrow aspiration, i.e., prolonged bleeding at the aspiration site. Standard diagnostic studies on the bone marrow sample may reveal information that may directly benefit patients. However, the broader benefit of this study is the acquisition of a better understanding of the characteristics of functional platelet disorders and the process of intracellular vesicle formation.
To describe time trends in the epidemiology of venous thromboembolism.