Active clinical trials for "Thrombosis"

In the Netherlands, 25.000 patients each year are diagnosed with Deep Venous Thrombosis (DVT). Elastic compression stocking (ECS) therapy reduces the incidence of post thrombotic syndrome (PTS) following DVT from 50% without ECS to 20-30% after ECS therapy for two years. It is however unclear whether all patients benefit to the same extent from this therapy or what the optimal duration of ECS therapy for individual patients should be. ECS therapy is not only costly, inconvenient and demanding but sometimes also even debilitating. Substantial costs could be saved by tailoring therapy to individual needs and as a result the quality of life for individual patients can be expected to improve. This study aims to assess the costs and effects of tailoring the duration of ECS therapy after DVT to individual patients needs. ECS therapy with a standard duration of 24 months will be compared with tailored ECS therapy, following an initial therapeutic period of 6 months, in patients with acute proximal DVT. The primary outcome is the percentage of patients with PTS at two year follow-up. This is a multi-center, randomized, allocation concealed, single-blinded clinical trial.

Prospective cohort study aimed at simplifying the diagnostic approach to symptomatic patients with the clinical suspicion of deep vein thrombosis (DVT) of the lower extremities. All patients will receive a pre-test clinical probability (PTP) and the determination of D-dimer. Patients with low PTP and negative D-dimer will have the diagnosis ruled out. All other patients will undergo compression ultrasonography (CUS) of the proximal vein system. Patients with negative CUS and either low PTP or negative D-dimer will have the diagnosis ruled out, while those with high PTP and positive D-dimer will undergo extensive ultrasound investigation of the calf vein system. All patients in whom the diagnosis of DVT is ruled out will be followed-up prospectively up to three months for documenting the development of symptomatic thromboembolic events.

The blood thinner "tinzaparin" might increase survival in patients with colon cancer undergoing surgical resection. The investigators want to assess if a trial allocating patients to prolonged treatment with tinzaparin versus standard of care is feasible.

The purpose of this pilot study is to assess the feasibility of determining the effects of a structured exercise program started two to four weeks after diagnosis of a first episode lower-extremity deep vein thrombosis (DVT) for a period of 12 weeks in reducing the incidence of post-thrombotic syndrome (PTS).

Enoxaparin is a type of low molecular weight heparin (LMWH), or anticoagulant, used to prevent and treat blood clots. Formation of blood clots, or venous thromboemboli (VTE) in pregnancy can have dangerous and even life-threatening effects on the mother and fetus. Enoxaparin is the preferred medicine to prevent clotting in pregnant patients who are at risk for VTE, because it has been studied to be safe and effective in pregnancy without any harms to the fetus. Although this medication is routinely used and is recommended by several prominent medical groups, the optimal dosing for prevention of VTE is still unclear. The range of standardly prescribed dosing regimens of Enoxaparin includes 40mg daily and 1mg/kg daily, but these two dosing strategies have never been compared in a head to head fashion.

This is a multicenter, randomized, double-blind, placebo-controlled, event-driven, superiority study for efficacy. Patients with confirmed symptomatic DVT (deep vein thrombosis) or PE (pulmonary embolism) who completed 6 or 12 months of treatment with rivaroxaban or VKA (vitamin K antagonist) are eligible for this trial (Einstein-Extension study).

Prospective controlled randomized clinical trial. Consecutive patients with acute proximal deep vein thrombosis (DVT) of the lower extremities, with or without contemporary manifestations of pulmonary embolism, are randomized to receive either a fixed duration of anticoagulant therapy (three months in patients with DVT secondary to transitory risk factors, six months in patients with idiopathic DVT) or a flexible duration of anticoagulant therapy, according to the persistence of residual thrombi, as shown by leg veins ultrasonography (up to 1 year in patients with secondary DVT, up to 2 years in those with idiopathic DVT). All patients are followed up to three years to assess the development of (objectively documented) recurrent thromboembolism. The rate of recurrent thromboembolism is compared between the two study groups, as well as the rate of major bleeding complications occurring during anticoagulation.

Evaluation of the safety and effectiveness of ActiveCare+ CECT device +/- baby dose aspirin (81 mg QD) for lowering the potential risk for bleeding and of DVT during and after THA surgery in comparison with LMWH.

It is known that patients who fracture their legs sometimes develop blood clots (known as deep vein thrombosis) in their legs. These clots may cause pain and swelling in the leg or they may detach and travel to the lungs producing shortness of breath, chest pain, and sometimes death. Unfortunately, it is not known how frequently these complications occur after leg fractures, or if the use of a blood thinner medication can effectively and safely prevent these clots. Doctors at hospitals across Canada are conducting a study in which patients who have surgery for leg fractures receive either a once-daily injection of a blood thinner, known as low molecular weight heparin, or a placebo injection for up to 14 days after their fractures. Neither the patients nor the doctors know which patient is on the medication and which patient is on placebo. All patients receive an ultrasound examination of their legs at 2 weeks after surgery to monitor for deep vein thrombosis. In addition, all patients are checked for symptoms of leg or lung clots and any side effects of the medication for 3 months. If the blood thinner is shown to be effective at reducing this complication and documented to be safe and cost-effective in this setting it will be recommended for use in such patients. If, on the other hand, the frequency of deep vein thrombosis is too low to justify the cost or inconvenience of taking this medication, this will also be an important finding.

To determine whether d-dimer testing can be used to simplify and reduce the costs of the diagnostic approach to patients with clinically suspected deep vein thrombosis