Active clinical trials for "Hypertension, Pulmonary"

Pulmonary hypertension is an important morbidity factor in patients having to undergo cardiac surgery with cardiopulmonary bypass (ECC). Milrinone used in inhalation, shows evidence of being a pulmonary vasodilator able to possibly contribute to the reduction of pressure on the pulmonary artery.

The aim of this study is to monitor long-term safety and tolerability of iloprost aerosol inhalation therapy in patients suffering from pulmonary hypertension.

This is a Phase III, multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy of escitalopram (30 mg/day) in two parallel groups (randomization ratio, escitalopram 2/placebo 1).

This study will examine the use of hydroxyurea and erythropoietin for treating sickle cell disease in patients who also have kidney disease or pulmonary hypertension (high blood pressure in the lungs). Hydroxyurea increases production of fetal hemoglobin in the red blood cells of patients with sickle cell disease, reducing the amount of sickle cells that cause pain and other complications requiring hospitalizations. However, hydroxyurea treatment has limitations: patients with sickle cell disease who have developed kidney disease may not be able to get the full benefit of the medicine, and hydroxyurea alone may not be able to treat life-threatening complications such as pulmonary hypertension or stroke. This study will determine which of two dosing schedules of hydroxyurea and erythropoietin is more effective for treating patients with sickle cell disease who also have kidney disease or pulmonary hypertension, and will examine whether the two drugs can lower blood pressure in the lungs. Patients 18 years of age and older with sickle cell anemia and kidney disease or pulmonary hypertension, or both, may be eligible for this study. Candidates are screened with a medical history, physical examination, blood tests, a 6-minute walk test (test to see how far the subject can walk in 6 minutes), and echocardiogram (ultrasound of the heart to measure blood pressure in the lungs). Participants undergo the following tests and procedures: Stabilization Phase: Patients take 2 hydroxyurea tablets a day until their fetal hemoglobin levels stabilize, usually over 2 to 4 months. They have blood tests every 2 weeks to monitor hemoglobin and fetal hemoglobin levels. At some time during this period, they undergo a test to measure kidney function, in which they are injected with an iodine-containing dye and wear a small pump for 1 day that injects a small amount of dye under the skin over 24 hours. They come to the clinic for 2 or 3 blood tests collected over 4 hours. Sequence I (Standard): When the fetal hemoglobin levels have been stable for 2 months, patients have a repeat echocardiogram and 6-minute walk test. Erythropoietin is then added to the hydroxyurea regimen. It is given 3 days a week, as an injection under the skin, along with iron supplements. Patients have blood tests and blood pressure measurements every week or every other week. Patients with pulmonary hypertension have another echocardiogram and 6-minute walk test once the hemoglobin level is stable. Sequence II (Cycled): When hemoglobin levels have stabilized with hydroxyurea once a day and erythropoietin 3 times a week, the hydroxyurea is adjusted so that the amount taken in 7 days is "cycled" over 4 days, and the erythropoietin is cycled over 3 days, with the dose increased twice, every 3 to 4 weeks. Blood pressure and hemoglobin are monitored once or twice a month. Patients with pulmonary hypertension have another echocardiogram and 6-minute walk test once the hemoglobin level is stable. Patients who develop complications while taking the drugs have their treatment regimens adjusted as needed.

The purpose of this study is to assess the pharmacokinetic and safety profile of a single dose of oral treprostinil following four different meals of varying caloric and fat content.

The primary objective of this study is to evaluate the safety of long-term administration of GSK1325760A in patients with PAH. The secondary objectives of this study are to evaluate long-term administration of GSK1325760A on: Improvement in exercise capacity (six-minutes walk distance: 6MWD), change in WHO Functional Classification and time to clinical worsening of PAH Change in the Borg Dyspnea Index (assessed immediately following the six-minute walk test [6MWT]) Change in plasma brain natriuretic peptide (BNP) levels Cardiopulmonary hemodynamics parameters (as measured by echocardiography)

This Phase 2 study was to determine the incidence of increased serum aminotransferase concentrations (alanine aminotransferase [ALT] and/or aspartate aminotransferase [AST]), as well as the overall safety and tolerability of ambrisentan, in participants with pulmonary arterial hypertension (PAH), idiopathic PAH (IPAH), or familial PAH (FPAH) who had previously discontinued ERA therapy (bosentan or sitaxsentan) due to increased serum ALT or AST concentrations.

AMB-220-E is an international, multicenter, open-label study examining the long-term safety of ambrisentan (BSF 208075) in subjects who have previously completed Myogen study NCT00046319, "A Phase II, Randomized, Double-Blind, Dose-Controlled, Dose-Ranging, Multicenter Study of BSF 208075 Evaluating Exercise Capacity in Subjects with Moderate to Severe Pulmonary Arterial Hypertension".

The purpose of this study is to determine whether the study drug is effective in the long-term treatment of primary or secondary pulmonary hypertension

To assess the safety of sildenafil 20 mg TID orally given to Japanese pulmonary arterial hypertension patients (Part 1 and 2) To assess the efficacy after 12 weeks of treatment of sildenafil 20 mg TID orally given to Japanese pulmonary arterial hypertension patients (Part 1)