Active clinical trials for "Pulmonary Embolism"

Pregnant women with a prior history of venous thromboembolism (VTE) are at increased risk of recurrent VTE. Current guidelines assessing the role of prophylaxis in pregnant women with prior VTE are based primarily on expert opinion and the optimal clinical management strategy remains unclear. This multicentre, prospective cohort study aims to test the following hypotheses: Antepartum prophylaxis with fixed-dose low molecular-weight heparin (LMWH) is safe, convenient and associated with an acceptably low risk of recurrent VTE in women with a single prior episode of VTE that was either unprovoked or associated with a minor transient risk factor. (Moderate risk cohort) Withholding antepartum prophylaxis is safe (recurrence risk <1%) in pregnant women with a single prior episode of VTE provoked by a major transient risk factor. (Low risk cohort) All study patients will receive 6 weeks of postpartum prophylaxis.

stroke's risk is increased in patients with pulmonary embolism and PFO compared to patients without PFO. Does this increased risk persist years after pulmonary embolism ?

Observational. Retrospective cohort.

FEVRIER study is an observatory of hospitalizations in cardiology units in sub-Saharan Africa.

A comparative, observational, cross-sectional and prolective diagnostic test study, including patients that have had a right heart catheterization and were referred for a CT pulmonary angiography as part of their imaging workup protocol for pulmonary hypertension. Dual-energy computed tomography (DECT) pulmonary angiography was performed on each patient to obtain perfusion maps and do a quantitative analysis. Segments with and without perfusion defects according to significant differences in the quantitative values, were defined as compatible or not with chronic thromboembolism. To assess the accuracy of the method and evaluate its performance, these results were compared with the sole results from the right heart catheterization, known to be the gold standard diagnostic tool.

To access the clinical usefulness of F1+2 in the diagnosis of PE in patients with AECOPD who require hospitalization. Specifically, to determine whether F1+2 may have an additional value in the subgroup of patients with an abnormal D-dimer,to determine whether it may increase the proportion of patients in whom PE can be safely ruled out and to determine the sensitivity, specificity and NPV of F1+2 at various cut-off values.

Venous thromboembolism (VTE) with its two clinical manifestations deep vein thrombosis (DVT) and pulmonary embolism (PE) is a life-threatening disease that is associated with considerable morbidity and mortality. The incidence of VTE increases with age and it - as the third most common cardiovascular disease after ischemic heart disease and stroke - represents an important public health problem in industrialized countries with several aspects in need to be addressed. VTEval Project includes three long-term prospective observational studies to evaluate and improve VTE diagnostics and management, treatment and outcome. The aims of the project include a systematic assessment of VTE, i.e. disease status (symptoms, clinical and subclinical aspects) and risk profiles (classic, psychosocial and environmental factors), using a system-oriented approach. VTEval collects three large prospective cohorts of patients with suspected and incident VTE consisting of individuals with a clinical suspicion of acute PE, individuals with a clinical suspicion of acute DVT, and individuals with incidental diagnosis of VTE). The standardized and harmonized data acquisition of the study establishes a sustainable resource for comprehensive research on VTE, thus providing the basis for both short- and long-term analysis.

Title: Clinical study of the relationship between Pharmacogenomics and warfarin dose in Chinese patients Drug: Warfarin Design: To value the accuracy of warfarin Pharmacogenomics algorithm by the algorithm calculated dose and actual dose in the Chinese patients. Hypothesis:Pharmacogenomic algorithm guided dose can help to predict warfarin dose in Chinese patients.

The purpose of the study is to evaluate the value of biomarkers in the diagnosis and risk stratification of patients with suspected pulmonary embolism.

The purpose of this study is to demonstrate the ability of new D-Dimer assay combined with a clinical pretest probability (PTP) to safely exclude pulmonary embolism (PE) or Deep Venous Thrombosis (DVT) in a 3 month follow-up.