View clinical trials related to Thromboembolism.
Filter by:Coagulation is a complex system which, through the action of thrombin, leads to the formation of fibrin, which stabilises the platelet clot. Any disturbance in the balance between procoagulant and anticoagulant factors can tip the physiological process either towards a state of hypercoagulability leading to thrombosis or hypocoagulability responsible for bleeding. Due to a number of factors, cancer is associated with a state of hypercoagulability, leading to thrombosis. The incidence of venous thromboembolism (VTE) in cancer patients varies from 15 to 20% depending on the type of cancer, the stage of the disease and the associated treatments (ONCORIF data, November 2021). The risk of venous thromboembolism (VTE) is greatly increased in cancer patients (RR x 3 to 6) and doubled in the case of associated chemotherapy (1). VTE is a poor prognostic factor, occurs mainly in the first 6 months after diagnosis and is the second leading cause of death in cancer patients. At present, haemostasis tests performed in medical laboratories independently explore the different coagulation pathways but do not allow the overall haemostatic profile of a hyper- or hypocoagulable patient to be assess. Based on this knowledge base, the aim of our study will be to monitor thrombogram profiles during the management of patients with tumours at high risk of thromboembolism (lung, pancreas, stomach, glioblastoma) and to correlate these profiles with the risk of a thromboembolic event occurring in these patients. The aim of the project is to validate a simple predictive test (suitable for clinical use) for the risk of thromboembolism in these patients. These analyses will also make it possible to monitor the impact of chemotherapy on changes in the thrombin generation test in patients.
DANHEP is a cluster randomized study of two different low molecular weight heparins. Parenteral anticoagulants are used in a variety of settings, including treatment and prevention of venous thromboembolism in cancer patients, medical patients, and surgical patients, along with the use as adjuvant therapy for coronary syndromes. The most frequently used parenteral anticoagulants in Denmark, include the two different low molecular weight heparins; dalteparin and tinzaparin. The two drugs are considered equally efficient and safe regarding treatment and prevention of thrombosis and risk of bleeding. Importantly, there is a lack of evidence regarding whether these drugs are in fact comparable. The aim of this study is therefore to investigate the comparative safety and efficacy of the two different low molecular weight heparins (dalteparin and tinzaparin using cluster randomization in patients with an indication for low molecular weight heparins.
The Quantra(r) hemostasis analyzer (Stago) is a recent addition to the family of global hemostasis tests. It uses ultrasound-based technology to characterize the viscoelastic properties of a whole blood sample during coagulation. The Qplus(r) cartridge consists of independent channels, each containing different reagents that provide parallel measurements of 6 parameters. This global test takes into account cellular elements such as platelets and red blood cells in clot formation, and also explores fibrinolysis. In addition, this test is of particular interest in delocalized biology, i.e. at the patient's bedside, and avoids the time-consuming laboratory centrifugation stage required for routine analyzers. In practice, this test has been developed to monitor haemostasis in patients who may present with a range of coagulopathies of various etiologies, but also in the management of haemorrhagic patients, in order to adapt the administration of blood products in particular. The Quantra (r) analyzer could therefore be of interest since it could be deployed in overseas operations to manage war casualties. Recent studies (EACTAIC-ICCVA congress, October 2021) have shown that there is a good correlation between anti-Xa activity and the CTR (coagulation time ratio) parameter of the Quantra cartridge Qplus (TM), suggesting that this automated system could be used to manage anticoagulant therapy.
The main research question of this study is to obtain further safety and effectiveness data on Pradaxa Pellets in children aged 3 months to less than 12 years in routine clinical practice setting.
This study will evaluate the development of venous thromboembolism (VTE) and possible determinants in patients with primary pancreatic cancer undergoing pancreatic cancer resection.
Malignant tumors are closely related to deep vein thrombosis, Pulmonary embolism and other diseases. Tumor patients usually have a hypercoagulable state (HCS) in their blood, and the proportion of thrombosis caused by HCS is more than 10 times that of non tumor patients. Conventional clinical testing methods such as coagulation function, blood routine, and thromboelastography are difficult to directly evaluate the hypercoagulable state of tumor patients. In addition, the widely used Khorana score and Caprini score systems in clinical practice need to be improved in accurately reflecting the hypercoagulable state of tumor patients. Our team has established a complete new coagulation time measurement system, including general clotting time (GCT), platelet rich plasma clotting time (PRP-CT), and platelet poor plasma clotting time (PPP-CT), which may be a new and accurate method for evaluating tumor hypercoagulability. The GCT study aims to evaluate: 1. The time of GCT, PRP-CT, and PPP-CT for malignant tumors is shorter than that of normal individuals, and some patients are in a hypercoagulable state; 2. The shortened time of GCT, PRP-CT, and PPP-CT may be associated with future thrombosis; 3. Evaluating the relationship between shortened GCT system time and overall tumor survival Therefore, the GCT system evaluation may identify patients who are truly in a hypercoagulable state, providing monitoring indicators for subsequent anticoagulation; It can also be evaluated whether GCT time can reflect the prognosis of tumor patients.
Chronic Obstructive Pulmonary Disease (COPD) is a common respiratory system disease characterized by persistent respiratory symptoms and irreversible airflow restriction, which seriously endangers people's health. Acute exacerbation of chronic obstructive pulmonary disease (AECOPD) refers to individuals who experience continuous deterioration beyond their daily condition and need to change their routine medication. AECOPD is usually caused by viruses and bacteria, and patients require hospitalization, which brings a huge economic burden to society. AECOPD patients often have limited activities. Because long-term chronic hypoxia causes venous blood stasis, siltation causes secondary red blood cell increase, and blood hypercoagulability, AECOPD patients have a high risk of pulmonary embolism (PE). Pulmonary Thrombo Embolism (PTE) refers to a disease caused by blockage of the pulmonary artery or its branches caused by a thrombus from the venous system or right heart. AECOPD patients experience elevated hemoglobin levels and increased blood viscosity due to long-term hypoxia. At the same time, such patients have decreased activity, venous congestion, and are prone to thrombosis. After the thrombus falls off, it can travel up the vein, causing PTE to occur in the right heart PTE is often secondary to low deep vein thrombosis (DVT). About 70% of patients were diagnosed as deep vein thrombosis in lower limb color ultrasound examination. SteinPD conducted a survey on COPD patients and general patients from multiple hospitals. The results showed that by comparing adult COPD patients with non COPD patients, the relative risk of DVT was 1.30, providing evidence for AECOPD being more likely to combine with PTE AECOPD patients with PTE have similarities in their clinical manifestations. It is difficult to distinguish between the two based solely on symptoms, such as cough, increased sputum production, increased shortness of breath, and difficulty breathing. They lack specificity and are difficult to distinguish between the two based solely on symptoms, which can easily lead to missed diagnosis. CT pulmonary angiography (CTPA) is the gold standard for the diagnosis of PTE, but due to the high cost of testing and high equipment prices, its popularity in grassroots hospitals is not high. Therefore, analyzing the risk factors of AECOPD patients complicated with PTE is of great significance for early identification of PTE. At present, although there are reports on the risk factors for concurrent PTE in AECOPD patients, there is no specific predictive model for predicting PTE in AECOPD patients. In clinical practice, risk assessment tools such as the Caprini risk assessment model and the modified Geneva scale are commonly used for VTE, while the Wells score is the PTE diagnostic likelihood score. The evaluation indicators of these tools are mostly clinical symptoms, and laboratory indicators are less involved, It is difficult to comprehensively reflect the patient's condition, so the specificity of AECOPD patients with PTE is not strong. The column chart model established in this study presents a visual prediction model, which is convenient for clinical use and has positive help for the early detection of AECOPD patients with PTE. In addition, medical staff can present the calculation results of the column chart model to patients, making it easier for patients to understand. It helps improve the early identification and treatment of AECOPD combined with PTE patients, thereby improving prognosis.
A study of how supplemental oxygen helps patients with acute pulmonary embolism (PE). Hypothesis: Oxygen affects right ventricular dysfunction (RVD) in patients with acute pulmonary embolism (PE) primarily by relieving hypoxic pulmonary vasoconstriction and reducing pulmonary pressure (PA) pressure, and that this process is metabolically driven.
Validation of Clinical Prediction Model for Venous Thromboembolism Following Neurosurgery: A Multicenter, Prospective, and Cohort Study
The goal of this patient registry is to learn about the natural history in patients with chronic thromboembolic disease (CTD) and/or chronic thromboembolic pulmonary hypertension (CTEPH). The main question[s] it aims to answer are: - Long-term outcome after various types of treatment, including medication, balloon pulmonary angioplasty, and pulmonary endarterectomy - Effect of treatment on patient's quality of life and exercise tolerance Participants will be followed longitudinally to assess their health outcomes and quality of life via chart review and health quality surveys.