Active clinical trials for "Hypertension, Pulmonary"

DHEA prevents and reverses chronic hypoxic pulmonary hypertension in a chronic hypoxic-pulmonary hypertension model in the rat. However, no study has been performed in human. The purpose of this study is to determine if DHEA is effective in the treatment of respiratory pulmonary hypertension in adults with Chronic Obstructive Pulmonary Disease (COPD) on exercise capacity and haemodynamic variables. Patients will receive after randomization either 200 mg oral DHEA or placebo over a one-year period. Evaluation concerns clinical parameters, echocardiography and right catheterization after and before treatment. Primary end-point is the six-minute walk test. This is a prospective double blind, randomized, placebo controlled study which will be realized in four university hospitals in France : Bordeaux, Strasbourg, Toulouse and Limoges. Eight patients with pulmonary hypertension (New York Heart Association functional class III or IV) associated with COPD were included in a pilot study between 2004 and 2005. Inclusion criteria were: COPD was defined by FEV1/FVC < 70% of reference values; resting mean pulmonary artery pressure (assessment by right pulmonary catheterization) ≥ 25mmHg with mean pulmonary capillary wedge pressure ≤ 15mmHg, PaO2 ≤ 60mmHg at rest or PaO2 ≥ 60mmHg associated with significant fall in O2 saturation with exercise; oxygen treatment initiated more than six months previously. Exclusion criteria were: clinical or respiratory instability during the three months before the inclusion in the study; corticosteroids therapy (> 0.5mg/kg/day of prednisolone or as equivalent); hepatic (prothrombin time < 50%) or renal (creatininemia > 130µmol/L) failure; diabetes; left ventricular dysfunction; PSA (prostatic antigens > 2,5ng/ml) and past history or diagnosis of cancer. The study was conducted in accordance with the Good Clinical Practices Guidelines. The study protocol was approved by the ethics review board of the University Hospital of Bordeaux (France). Written informed consent was obtained for all patients and investigations were conducted according to the institutional guidelines and to the Helsinki principles. This trial conducted enrollment between 2004 and 2005, but had not been registered in ClinicalTrials.gov because it preceded this policy.(Study design: The dose of oral DHEA administered was 200 mg once daily for three months. At baseline and after three months of treatment, clinical evaluation included 6MWT, Borg dyspnea index, systolic and diastolic blood pressure, right heart catheterisation, lung function testing and serum DHEA levels were performed.)

The primary objective of this study is to evaluate the long-term safety of LIQ861 in patients with pulmonary arterial hypertension (PAH).

Balloon pulmonary angioplasty (BPA) is a new method of treatment for inoperable chronic thromboembolic pulmonary hypertension (CTEPH) or persistent CTEPH after surgery. BPA improves or even normalises hemodynamic parameters measured during a right heart catheterization. Nevertheless, the vast majority of patients retain dyspnea and impaired exercise capacity despite considerable hemodynamic improvements. Pulmonary rehabilitation (RHB) can improve symptoms, quality of life and exercise capacity in patients with CTEPH. Unfortunately, access to RHB remains a concern in many countries. Tele-rehabilitation (tRHB) has been shown feasible and effective some cardiac or pulmonary diseases. This randomized controlled study aims at comparing the effects of tRHB with the effects of simple advices regarding exercising in CTEPH patients with normalized or near-normalized pulmonary hemodynamics after BPA treatment.

The purpose of this study is to evaluate the efficacy and safety of mirabegron (a B3 adrenergic receptor agonist) in patients with pulmonary hypertension secondary to heart failure by conducting a randomized multicenter phase II placebo-controlled clinical trial.

Although there has been some progress in pharmacological management of PAH, limited functional capacity and low survival still persist, but there is evidence that exercise training can be accomplished without adverse effects or damage to cardiac function and pulmonary hemodynamics. Specifically, improvements in symptoms, exercise capacity, peripheral muscle function and quality of life. Training programs need to be better studied and well defined, and their physiological effects during physical training and functional capacity. The aim of this study is to compare the effects of different training exercises on physical performance indicators.

Venous catheters are necessary for the treatment of many patients. Showering with a venous catheter is often prohibited due to the infection risk when the insertion site becomes wet. Therefore these patients are challenged to keep the catheter insertion site dry and always covered with a dressing. Washing themselves is often impossible without assistance of a nurse or significant other. For patients with a catheter connected to an infusion line, it is even more difficult. Showerpatch is a newly developed dressing that safeguards the insertion site of an IV catheter from water during bathing activities. The purpose of this trial is to evaluate the impact of the availability of Showerpatch by comparing the outcomes in patients regarding the patient's autonomy in bathing activities, the material use and the time needed from caregivers in home care. Additionally qualitative data on patient's bathing activities and the use of Showerpatch will be collected.

The purpose of this study is to investigate the safety and clinical efficacy of HGP1207 (Sildenafil) in subjects with pulmonary hypertension associated with systolic heart failure.

Right ventricular (RV) failure is the leading cause of death in pulmonary arterial hypertension. (PAH) Right ventricular ejection fraction is one of the most important predictors of prognosis in heart failure patients regardless of cause. It is estimated that 30-50% of patients with heart failure and preserved ejection fraction (HFpEF) have right ventricular dysfunction and up to 70% of these patients will have significant pulmonary hypertension (PH), both of which are related to much worse prognosis. Right ventricular failure is becoming an increasingly prevalent and significant cause of morbidity in patients with left heart disease. Despite the significance of RV function to survival, there are no therapies available that directly or selectively improve RV function. The overall theme of this research project is to evaluate the mechanisms that contribute to the cause of right heart failure. This small study is designed to look at the role of heart and lung metabolism and pulmonary hypertension as they relate to the development of right heart failure in cardiovascular disease.(PH-LHD)

This study will evaluate the use of N-acetyl cysteine in post-reperfusion pulmonary injury in patients with chronic thromboembolic pulmonary hypertension undergoing pulmonary balloon angioplasty and pulmonary endarterectomy. Half of the patients will receive N-acetyl cysteine and the other placebo.

The purpose of this study is to test the impact of a personalized, partly supervised rehabilitation program on the exercise capacity in patients with pulmonary hypertension. The rehabilitation program consists of 2 weeks inpatient, 2 weeks ambulatory and 11 weeks home based rehabilitation.