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Primary Pulmonary Hypertension clinical trials

View clinical trials related to Primary Pulmonary Hypertension.

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NCT ID: NCT04908397 Completed - Clinical trials for Pulmonary Arterial Hypertension

Carnitine Consumption and Augmentation in Pulmonary Arterial Hypertension

Start date: September 29, 2021
Phase: Phase 1
Study type: Interventional

In preparation for a future mechanistic study, investigators now propose to test the specific hypothesis that carnitine consumption is not reduced in PAH, that plasma carnitine levels are stable over time in PAH and that carnitine supplementation in PAH can increase plasma carnitine and thereby delivery of carnitine to the RV and possibly improve RV function. Investigators propose three aims in humans to test this mechanistic hypothesis, 1) Measure the oral consumption of carnitine in human PAH. This aim will use food diaries and carnitine supplement use questionnaires in PAH patients to test the hypothesis that carnitine supplementation is uncommon in PAH and food consumption is adequate. Aim 2) Measure the stability over time in plasma carnitine levels in PAH patients. This aim will test the hypothesis that plasma carnitine is not affected by disease severity and is stable over time in PAH patients. Investigators will measure plasma carnitine concentration and markers of fatty acid oxidation at Visit 1 and Visit 2. 3) Perform a mechanistic pilot study using carnitine supplementation to enhance circulating carnitine in PAH. This small pilot study will test the hypothesis that carnitine supplementation increases plasma carnitine (primary endpoint) and will test for physiologic effects using six minute walk testing, echocardiography and plasma markers of lipid metabolism.

NCT ID: NCT03528902 Completed - Hypertension Clinical Trials

Tamoxifen Therapy to Treat Pulmonary Arterial Hypertension

T3PAH
Start date: October 1, 2018
Phase: Phase 2
Study type: Interventional

The main purpose of this clinical trial is to examine the feasibility and effects of tamoxifen in subjects with pulmonary arterial hypertension (PAH). The study will evaluate how well the drug is tolerated, and its impact on functional condition and selected biomarkers. Changes in tricuspid annular plane systolic excursion (TAPSE) and other parameters determined by transthoracic echocardiography will be evaluated as well as changes in additional metrics such as six minute walk test distance, quality of life assessments, and hormone levels.

NCT ID: NCT03399604 Completed - Clinical trials for Primary Pulmonary Hypertension

Investigation of the Safety and Pharmacology of Dry Powder Inhalation of Treprostinil

INSPIRE
Start date: January 2, 2018
Phase: Phase 3
Study type: Interventional

The primary objective of this study is to evaluate the long-term safety and tolerability of LIQ861, a dry powder formulation of treprostinil, in patients with Pulmonary Arterial Hypertension (PAH). A secondary objective of this study is to evaluate the comparative bioavailability of treprostinil between two formulations of inhaled therapy.

NCT ID: NCT02859194 Completed - Bronchiectasis Clinical Trials

The Effect of Lt to Rt Shunt Using Veno-veno-arterial Extracorporeal Membrane Oxygenation (ECMO) on Coronary Oxygenation in Lung Transplantation Patients

Start date: May 31, 2016
Phase: N/A
Study type: Interventional

ECMO(Extracorporeal membrane oxygenation) is being essential for cardiopulmonary failure patients. There are two types of ECMO, which is veno-veno (V-V) that can be used in respiratory failure patients and veno-arterial (V-A) that can be used in cardiac failure patients. V-A ECMO can also be used during lung transplantation, substitution of cardiopulmonary bypass, which can show sufficient performance during operation and better postoperative outcome. However, regarding V-A ECMO circulating from femoral vein to femoral artery, there is a pro blem of differential hypoxia which might influence coronary artery and head vessels. In this prospective study, the investigators are planning to put another ECMO catheter into internal jugular vein which takes a role of left to right shunt, to mitigate the hypoxia of coronary artery.