View clinical trials related to Thrombosis.
Filter by:PRESERVE is a multi-center, prospective, open-label, non-randomized investigation of commercially available IVC filters from 6 manufacturers placed in subjects for the prevention of pulmonary embolism (PE). This study will enroll up to 1,800 IVC filter subjects (with a maximum of 300 subjects per IVC filter brand) at up to 60 sites in the US. The primary objective of this investigational device exemption (IDE) clinical investigation is to evaluate the safety and effectiveness of the commercially available IVC filters (retrievable and permanent) in subjects with clinical need for mechanical prophylaxis of PE with an IVC filter.
Warfarin is an anticoagulant medication that is highly effective at preventing clotting disorders but which has a narrow therapeutic window. If warfarin is under effective patients are at risk of stroke, if it is over effective patients are at risk of bleeding complications. Physicians routinely and regularly measure a blood test (called the "INR") that determines the effectiveness of warfarin and have a range of test values (the "therapeutic range") in which they try to keep the patient. By convention warfarin is taken at dinnertime, however this is the same time of day that highly variable consumption of dietary vitamin K occurs (found largely in green leafy vegetables) and vitamin K alters the effectiveness of warfarin. Given vitamin K has a very short half-life (i.e. it is only active for a short period of time after it is ingested) it may make more sense to take warfarin in the morning (when very little vitamin K is ingested) to produce a more consistent drug effect. The purpose of this study is to determine whether switching current warfarin users from evening to morning dosing decreases time spent outside the therapeutic INR range.
Differences in efficacy and safety between new oral anticoagulants (NOAC) and vitamin K antagonist (VKA) in real practice remain uncertain. The few existing ambulatory studies did not answer all NOAC specific issues, such as prescription habits and motives, patients characteristics, biological monitoring, as well as the occurrence of major and minor thromboembolic events, especially in France where warfarin is less frequently prescribed. Therefore, in order to describe clinical and follow up characteristics of patients receiving oral anticoagulants, the investigators will set up a national prospective cohort to compare the occurrence of thromboembolic events between VKA and NOAC in primary care.
The purpose of the study is to learn if monitoring dialysis access blood flow during dialysis treatment with a transonic machine (an ultrasound technique) will prevent (or reduce) the development of dialysis access thrombosis (clotting). Investigators would like to study if monitoring with a specific technique called ultrasound dilution technique can help prevent problems with access when compared to what is the current standard of care for patients.
This study investigates the potential protective effects of altering fatty acid in the platelet as a method for prevention of platelet activation and thrombosis in type 2 diabetes mellitus. Fatty acids (omega-3 and omega-6) and their oxidized lipids will be evaluated for protection from agonist-mediated platelet activation in platelets from type 2 diabetics and healthy controls.
Emergency Medicine (EM) Residents routinely conduct bedside ultrasound exams in the Emergency Department (ED) employing the two point compression method. This study endeavors to investigate the accuracy and utility of bedside ultrasound for Deep Vein Thrombosis (DVT) in the ED by EM Residents by comparing the results of that exam against the gold standard of a DVT ultrasound performed in the Radiology Department and interpreted by a Radiologist.
The study is designed to evaluate the role of platelets and immature platelets in the ethiopathology of deep venous thrombosis and pulmonary embolism.
The primary research question is, in patients with short bowel syndrome requiring central venous access device (CVAD) for long-term total parenteral nutrition, is once weekly recombinant tissue plasminogen activator (rtPA) lock therapy more effective than routine care using heparin flushes in reducing the incidence of line-associated thrombosis and infection.
Caribbean Hispanics are a population with a disproportionately high prevalence of cardio-metabolic disorders but with a limited expectation of benefits from current pharmacogenetic algorithms derived mainly in subjects of relatively pure ancestry. The investigators focus on warfarin responses to develop urgently-needed DNA-driven prescription guidelines for this population, who have arisen from European, West African and Amerindian genomic origins to produce a highly heterogeneous population. Our project combines admixture analysis and DNA-sequencing with development of more accurate rules for better predictability of warfarin dosing to immediately serve this medically underserved population.
The primary objective of the study is to report adverse events of on-treatment AEs by the treating physicians during a specified 24-month study period in patients with venous thromboembolism at the sentinel site(s) for the National Center of Pharmacovigilance (CNFV) in Mexico.