Active clinical trials for "Embolism"

The overall goal of this clinical research study is to prospectively assess primary outcomes related to pulmonary embolism (PE) that occur immediately (within 5 days) and within 30 days. The secondary goal is to compare validated prediction models and a modified European Society of Cardiology (ESC) approach that is primarily right ventricle dysfunction (RVD) driven with clinical risk assessment being secondary, and with primary outcomes of clinical deterioration within 5 days.

This is an observational study designed to monitor the course of the fraction of reticulated platelets and the correlation thereof to major adverse cardiac and cerebrovascular events after noncardiac surgery.

Chest pain is an alarming symptom and one of the most frequent causes of access to the Emergency Departement. Although chest X-ray remains an essential step in the diagnostic process, several studies showed numerous limitations of radiography which frequently is inconclusive. Ultrasonography is a non-radiating imaging technique. Albeit a wide use of ultrasound, the utilization of ultrasound in the study of the lung has only recently been introduced in the clinical practice. Several studies proved that lung ultrasound is useful in the diagnosis of lung consolidation in community acquired pneumonia. Nowadays, ultrasound is not routinely used in the presence of chest pain. Our hypothesis based on clinical experience is that, in patients with pleuritic chest pain, lung ultrasound is very sensitive in detecting pneumonia and other lung diseases (such as pneumothorax) thus performing better than radiography. The primary aim of this study is to verify, in patients affected by pleuritic chest pain, the accuracy of lung ultrasound compared to chest-X-ray. The secondary aim is to evaluate the accuracy of lung ultrasound consolidations in distinguishing lung consolidation in pneumonia, atelectasis, pulmonary infarction, or tumors.

The purpose of this study is to evaluate the capacity of some novels biomarkers Procalcitonin (PCT), Midregional Proadrenomedullin (MR pro ADM), Midregional pro-atrial natriuretic peptide (MR pro ANP), Copeptin (CT pro arginine vasopressin), Pro endothelin to stratify the risk in severe dyspnea.

The cause of ischemic stroke remains frequently unknown. In patients with patent foramen ovale (PFO), the link between PFO and Stroke is unclear. The investigators hypothesize that the main mechanism is paradoxical embolism and decided to look for clinically apparent and silent cerebral embolism in patients with a recent pulmonary embolism.

Blood clots in lung arteries (pulmonary embolism) are usually detected using a radiological test called computed tomography (CT scan). As technology advances, the CT scans are able to detect smaller and smaller blood clots. Over time, the frequency of blood clots in the pulmonary arteries has increased significantly (CT scan are now detecting very small blood clots that the investigators could not see before). As a result, more and more people are on blood thinners to treat these small blood clots but their true clinical significance is unknown. The management of blood thinners is costly and also utilizes scarce healthcare resources. These blood thinners need to be monitored with frequent blood work. Furthermore, every year, approximately 3 percent of patients on blood thinners will have a major bleeding event requiring medical attention. The investigators don't think that treating these small blood clots in the pulmonary arteries detected on CT scan is worth the risk of bleeding from the blood thinners. The main goal of this study is to find out if it is safe to not treat very small blood clots in the pulmonary arteries. The investigators plan to follow 300 patients with small blood clots in their lungs for 90 days. These patients will not be treated with blood thinners but will be followed closely with other non-invasive tests to avoid progression or recurrence of blood clots.

The Registry involves the collection of information for research and educational purposes only on the use of AngioJet in the peripheral vascular system.

The objectives of the PROTECT study are: To assess the role of CT pulmonary angiography in the risk stratification of hemodynamically stable patients with acute symptomatic pulmonary embolism (PE). To assess the role of transthoracic echocardiography in the risk stratification of hemodynamically stable patients with acute symptomatic PE. To assess the role of 2 biomarkers (troponin and brain natriuretic peptide) in the risk stratification of hemodynamically stable patients with acute symptomatic PE. To assess the role of the Pulmonary Embolism Severity Index (PESI) in the risk stratification of hemodynamically stable patients with acute symptomatic PE. To assess the combined role of CT pulmonary angiography, transthoracic echocardiography, PESI, troponin I and brain natriuretic peptide in the risk stratification of hemodynamically stable patients with acute symptomatic PE.

The purpose of this monocentric, preliminary study is to assess the evolution of pulmonary capillary blood volume (Vc), measured by the double diffusion nitric oxide/carbon monoxide (NO/CO) method (Guenard et al.; Respir Physiol 1987), from the starting of the anticoagulant therapy to 6 months after, and to search correlations with the evolution of clinical (dyspnea and results of the 6 minutes walking test), biological (BNP; Troponin), echocardiographic (right ventricular dysfunction, pulmonary arterial pressure) and ventilation/perfusion lung scan data.

To identify the incidence cohort of Olmsted County Minnesota residents with deep venous thrombosis (DVT)/pulmonary embolism (PE) from 1966 through 1990. Episodes of DVT or PE acquired during hospitalization or in the community were identified for future studies.