Active clinical trials for "Hypertension"

It is a randomized prospective controlled study of transcatheter renal denervation in patients with Heart Failure With Normal LV Ejection Fraction. The purpose of the study is to evaluate the safety and effectiveness of renal denervation in patients with Heart Failure With Normal LV Ejection Fraction, due to reduction in renal and systemic sympathetic activity.

Hypertension is a major risk factor for stroke and cardiovascular mortality. Catheter- based renal denervation causes substantial and sustained blood- pressure reduction in patients with resistant hypertension. The purpose of RENSYMPIS is to study the effects of renal denervation on: Cardiovascular function Metabolic factors Inflammatory and endocrine factors Coagulation Sleep

The aim of present study is to evaluate the efficacy and safety of two dose combination of Telmisartan/S-Amlodipine (80/2.5mg and 80/5mg) compared with S-Amlodipine monotherapy (2.5mg and 5mg) in patients with Stage 2 hypertension.

This is a prospective, observational, multicenter trial to evaluate the safety and feasibility of selective endovascular unilateral carotid body ablation in patients with treatment-resistant hypertension. All patients will be followed for two (2) years following treatment.

The proposed study is to evaluate the possible effect of metformin on arterial pressure by 24h-ambulatory blood pressure monitory (24h-ABPM).

To study whether renal sympathetic denervation(RSD) is safe and effective in patients with drug-resistant hypertension and symptomatic atrial fibrillation.

Pulmonary arterial hypertension (PAH) is a disease that causes raised blood pressure in blood vessels that pick up oxygen from the lungs. It has a life expectancy similar to some cancers. There is treatment available but there is no cure. We now know that PAH is associated with weakness in the muscles in the legs, which contributes to the symptoms patients' experience. Researchers believe that certain proteins found in high levels in the blood of patients with other chronic diseases can affect muscle function and growth. One of these proteins is called growth differentiating factor (GDF) 8, high levels of which are associated with muscle weakness in chronic obstructive pulmonary disease(COPD) and heart failure (HF). Interestingly there are drugs available which block the actions of GDF-8 on muscle cells which has been shown in animals to result in increased muscle size. A related protein called GDF-15 is found in elevated levels in patients PAH, and is linked to prognosis. Our preliminary data suggests that GDF-15 can also directly influence muscle size in a number of situations. We aim to investigate the role of GDF-15 and related molecules in the development of muscle weakness in patients with PAH. We will do this by measuring certain markers of muscle weakness and taking blood and muscle samples in patients and controls. We will then compare the levels of GDF-15 in these tissues in those with and without muscle wasting. We hope this work will lead to a greater understanding of the role of GDF-15 in the development of muscle weakness in patients with PAH. GDF-15 levels may be important in allowing us to define which patients have muscle weakness. In the future we aim to perform a clinical trial of drugs which block the actions of GDF-15.

The purpose of this study is to compare of carvedilol, a vasodilating beta-blocker and bisoprolol, a beta1- selective beta-blocker for reducing the central pulse pressure and thereby left ventricular (LV) mass in never-treated hypertensive patients.

Although pulmonary hypertension (PH) is a quite frequent complication of advanced pulmonary diseases, and it is an independent prognostic factor, until now no evidence-based treatment approach exists for those patients. This study will address if the drug sildenafil can lower pulmonary vascular resistance in patients with significant pulmonary hypertension (high blood pressure in the lungs) associated to chronic obstructive pulmonary disease (COPD). It will see if this treatment can improve effort capacity, quality of life without causing a deterioration in pulmonary gas exchange (mainly arterial oxygenation). Patients 18 years of age and older with moderate COPD and pulmonary hypertension (mean pulmonary arterial pressure >30 mmHg) may be eligible for this study. Participants are randomly assigned to receive sildenafil or placebo (pill with no drug) for 16 weeks. Before starting treatment (baseline), and a the end of the study, the patients have a comprehensive assessment including: a chest x-ray and CT scan (only at baseline); pulmonary function tests to measure how much air the patient can breathe in and out, and the capacity of diffusion of gases; arterial blood gases analysis (for safety reason this examination is performed at baseline, before the randomization after one hour from the administration of a tablet (20 mg) of sildenafil, and every month) an echocardiogram (heart ultrasound) (only at baseline); a 6-minute walk test to measure exercise capacity; a quality-of-life assessment (SF-36 questionnaire) a right heart catheterization to evaluate the severity of hypertension At the end of the 16-week period, patients may opt to continue to receive sildenafil and monitoring in an open-label phase of the study for up to 1 year.

The objective of this study is to compare the effects of ciprofibrate versus omega-3 fatty acid supplementation on the vascular structure and function in hypertensive patients with hypertriglyceridemia.