Active clinical trials for "Hypertension"

Prospective study of diagnostic accuracy of optic nerve sheath diameter measurement (index study) in traumatic brain injury with simultaneous invasive intracranial pressure monitoring as the reference standard.

The purpose of this study is to determine the prevalence of hypertension among citizens of Holstebro, Denmark aged 55-64 years, including both the well treated, the untreated and the insufficiently treated, and to estimate the prevalence of white coat and masked hypertension using home blood pressure measurements with telemedical data transmission.

Aim of this study is to enhance the knowledge of myogenic tone alterations in hypertensive patients and to better understand the mechanisms controlling the myogenic tone. Evaluations will be performed through ex vivo studies of peripheral arterioles in human adipose tissue from lumbar muscle, isolated from biopsies. This will allow investigators to evaluate the myogenic function in response to progressive blood pressure increases, in order to correlate myogenic function to arterial hypertension and to the molecular mechanisms already identified in the preclinical models.

The investigators will evaluate ventricular reversed remodelling after double lung transplantation (LTX) in patients with pulmonary arterial hypertension (PAH), measured with cardiac magnetic resonance imaging (MRI). Reversed remodelling will be compared with control patients without PAH (e.g. Cystic Fibrosis) who will also undergo LTX.

This observational study aims to chart patients which get their prostacyclin treatment via the subcutaneous LenusPro pump. How the surgical procedure is performed and the clinical follow-up of these patients. And by this also charting complications that might occur in relation to treatment. Participating centres are located in Denmark, Norway and Sweden.

The assessment of pulmonary artery pressure (PAP) and parameters describing right ventricular function stand in the focus of the diagnosis and clinical management of pulmonary hypertension (PH). Right heart catheterization (RHC) is the gold standard method to measure PAP and to provide hemodynamic information on right ventricular function. However, due to its invasive nature, RHC is not optimal for screening and for close monitoring of the disease. Therefore, the development of non-invasive methods providing reliable PAP measurements and right ventricular functional parameters would be of major benefit. Today, the most often used comprehensive non-invasive method for these purposes is echocardiography. However, the method has limitations; in many cases PAP is significantly under- or overestimated - especially in subjects with co-existing pulmonary diseases. Regarding right ventricular function, although novel echocardiography parameters appear to be promising, they have not yet been evaluated in all forms of PH. Another emerging non-invasive method is cardiac magnetic resonance imaging (MRI). MRI is considered to be as gold standard for the non-invasive assessment of right ventricular function. In addition, our group showed that with a special approach ("vortex method"), MRI enables the determination of PAP with physiologic accuracy, but the method has not yet been validated systematically in different forms of PH. All patients undergoing right heart catheterization in our clinic are candidates for the study. Excluded will be patients not eligible for MRI or declining to take part in the study. MRI and Echocardiography will be performed within two weeks of the RHC. Hypothesis: MRI is superior to echocardiography to non-invasively determine mean PAP in a broad collective of patients with PH of diverse ethology. MRI derived right ventricular functional parameters correlate better to invasive measurements and to established prognostic parameters than echocardiography derived right ventricular functional parameters. Novel right ventricular tissue Doppler parameters add substantially to "classical" echocardiography parameters to describe right ventricular function.

The purpose of this survey is designed to investigate the treatment status of hypertensive patient with metabolic syndrome-related risk factors treated with candesartan cilexetil tablets (Blopress Tablets), as well as to assess relationships between risk factors (example, visceral fat accumulation) and the incidence of cerebrovascular/cardiovascular events in an exploratory manner.

The aim of the study is to assess safety, tolerability and clinical effects of different doses of riociguat in patients with inoperable Chronic Thromboembolic Pulmonary Hypertension (CTEPH) and who are not satisfactorily treated and cannot participate in any other CTEPH trial. In the US the study runs as an Expanded Access program under 21 CFR 312.320.

The course of both pulmonary embolism (PE) and one of its more relevant late complications, i.e. chronic thromboembolic pulmonary hypertension (CTEPH) is still substantially unknown. Recent evidence has shown that the incidence of CTEPH is higher than previously believed, but this has not been confirmed by other studies. A clear link between PE and CTEPH has been questioned by some experts. A great number of patients affected by PE persistently have residual chronic thromboembolic material the meaning of which is a matter of debate. The evidence sustaining a link between chronic residual PE and subsequent PE recurrences or CTEPH is insufficient. Thus, a nationwide, multicentre, prospective cohort study was designed with the following aims: to ascertain the incidence of symptomatic CTEPH after a first episode of acute PE; to ascertain the incidence of venous thromboembolic (VTE) recurrences after a first episode of acute PE; to evaluate whether a relation exists between chronic residual PE and CTEPH to evaluate whether a relation exists between chronic residual PE and VTE recurrences; to evaluate whether a relation exists between persistent right ventricular dysfunction and CTEPH; to evaluate whether a relation exists between persistent right ventricular dysfunction and PE recurrences. For each enrolling centre, consecutive outpatients or inpatients with an objectively diagnosed first acute PE episode are considered eligible.

The purpose of this study is to study the impact of blood pressure on cognitive performance.