Active clinical trials for "Venous Thrombosis"

This VA QUERI Partnered Evaluation Initiative will evaluate the impact of an immersive Point-of-care Ultrasound (POCUS) Training Course on provider skill acquisition and retention; the frequency of POCUS use by trained providers; and the barriers/facilitators to POCUS in the VHA. Data sources include pre- and post-course assessment tools, medical coding data, and course evaluations. Providers that participate in the POCUS Training Course will be compared to control providers from wait-listed facilities. Additionally, participating facilities vs. wait-listed facilities for the POCUS Training Course will be compared. Findings from this project will guide ongoing efforts of the investigators' operating partners, VA Specialty Care Centers of Innovation (SCCI) and the VA Simulation Learning and Research Network (SimLEARN), to develop a national POCUS training program and facilitate implementation of POCUS use system-wide in the VA healthcare system.

The use of coumarins has been a challenge for doctors because of its narrow therapeutic range and they show great inter and intra-individual variability in the dose necessary to achieve an international normalized ratio (INR) within the therapeutic range. Among the factors influencing the interindividual variability in the dose required include age, weight, Vitamin K in the diet, comorbidity as well as drug interactions and in recent years has also seen the importance of pharmacogenetic factors.

This study aimed (1) revaluating the efficacy of the Wells' clinical prediction score for an inpatient population; and the weight of the presence of thromboprophylaxis treatment on the score, and (2) evaluating the correlation of a risk stratification established between a physician specialised in thrombosis and any other doctor.

The main objective of this study is to compare the efficacy and safety of aspirin, low molecule heparin and rivaroxaban for preventing catheter-related thrombosis in middle-to-high-risk ambulatory patients with cancer and implantable venous access ports.

Investigators are building an empirical evidence base for real world data through large-scale replication of randomized controlled trials. The investigators' goal is to understand for what types of clinical questions real world data analyses can be conducted with confidence and how to implement such studies.

The main objective of the study is to determine the incidence of deep vein thromboses at Doppler echo in patients with SARS-Cov-2 pneumopathy upon their entry into ICU and after 7 days of hospitalization in ICU. This is a monocentric interventional study (RIPH 2).

Venous thromboembolism (VTE) is a common complication of malignancies, in particular to lung cancer. Patients with lung cancer in surgical and medical departments are at high risk of VTE development. Prophylaxis is one major way to to prevent it. Currently, VTE prophylaxis is mainly based on VTE-risk assessment. However, all patients hospitalized for cancer are at intermediate or high risk of VTE but their bleeding risk vary. To improve effect of VTE prophylaxis and reduce bleeding events in patients with lung cancer, we will conduct an open-label parallel randomized clinical tria to assess the effect of bleeding risk based prophylaxis strategy among lung cancer patients. We hypothesize that VTE prophylaxis based on bleeding risk assessment with a short post-discharge treatment course is superior to VTE propohylaxis based on VTE risk assessment among hospitalized patients with lung cancer A sample of 3200 eligible patients will be randomized into experimental or control group with an allocation rate of 1:1. Stratified by medical/surgical units, block randomization with a varying block size of 4 or 6 will be adopted to randomize patients into experimental or control group. In experimental group, patients will undergo bleeding risk assessment and receive prophylaxis according to bleeding risk during hospitalization, and they will also receive an extended pharmacological prophylaxis of 5mg Rivaroxaban once daily for up to 15 consecutive days after discharge. In control group, patients will receive routine VTE prophylaxis, VTE risk assessment and prophylaxis if indicated during hospitalization according to current policies for hospitals in China but no further treatment prophylaxis after discharge. Patients in both groups will be followed up for 30 days. The primary outcome is symptomatic and asymptomatic objectively proven VTE (deep vein thrombosis (DVT) and/or pulmonary embolism (PE)) within 30 days after initiation of randomization. Ultrasound and CTPA will be performed to detect DVT and PE, respectively. Clinically relevant bleeding (non-major clinically relevant and major bleeding, HIT) and death are secondary outcomes.

Objective: The purpose of this study is to determine the need for thromboprophylaxis in patients with a fracture of the lower extremity being treated conservatively in a below-knee plaster cast and to assess if both of the two tested prophylactic treatments are effective for this indication. Hypothesis: Nadroparine and Fondaparinux are both effective in preventing a thromboembolic event in patients with a nonsurgical fracture of a lower extremity immobilised in a below-knee plaster cast.

Hypothesis to be tested: placement of a central venous catheter will induce a systemic hypercoagulable state. To determine this, the investigators will measure thromboelastography (TEG), PT(prothrombin time), PTT (partial thromboplastin time), Prothrombin Fragment 1.2, Factor VIII, and VonWillebrand's Factor. In addition, duplex ultrasound will be performed to correlate the laboratory coagulation values with functional changes (i.e. deep venous thrombosis).

The purpose of this research study is to see if a lottery which provides the opportunity to win money, a reminder system using a "Med-eMonitor", or the combination of both might be useful in helping patients to achieve better control of their anticoagulation therapy. Selection for the arms of the study is randomized by the study computer. Some will participate in the daily lottery only, some with the reminder system only, some with the reminder system and the daily lottery, and some with neither the lottery nor the reminder system.