Active clinical trials for "Hypertension"

Develop and evaluate a model of organization and management in the management of patients with cardiovascular risk factors (hypertension, diabetes mellitus, smoking, obesity, physical inactivity, dyslipidemia and family history) in primary care aimed at the compliance, control and treatment effectiveness.

The investigators want to find out whether a recently introduced combination of two blood pressure lowering agents (olmesartan and amlodipine) has a different blood pressure lowering effect than a single active substance. In addition the investigators want to find out whether there is a difference in the changes in blood pressure over the course of a day depending on the time when the medications are taken (in the morning or at night). Male and female patients over 18 years of age may participate.

The investigators want to find out if a treatment with a new combination of two different antihypertensive drugs (olmesartan and amlodipine) in one tablet in patients with moderately elevated blood pressure is more effective than treatment with just one substance (candesartan). All antihypertensive treatment will be ceased for two weeks to achieve comparable baseline conditions. Treatment is then started with the single substance. After six weeks, therapy is changed to another single substance and after a further six weeks, to the fixed combination tablet. Blood pressure is determined by office measurements taken by the doctor and via long-term ambulatory blood pressure monitoring (ABPM). Participants may be male or female and must be over 18 years of age.

This study will evaluate the antiviral efficacy of combination therapy with sofosbuvir (SOF) plus ribavirin (RBV) for 48 weeks in adults with compensated and decompensated chronic hepatitis C virus (HCV) infection. Approximately 50 adults will be randomized (1:1) to receive study drug for 48 weeks or take part in an untreated observational arm for the first 24 weeks followed by study drug for another 48 weeks.

High blood pressure is the number one cause of death for Blacks in the United States. A major reason for the high rates of cardiovascular deaths is poor blood pressure control. Improving blood pressure control leads to large reductions in cardiovascular deaths in Blacks and can be achieved through interventions targeting self-management behaviors. Yet, despite the proven benefits of these interventions, there is little evidence of their role in community-based settings. In NYC, the Department of Health and Mental Hygiene (DOHMH) has developed Keep on Track, a volunteer-run, community program that aims to lower blood pressure of older adults through blood pressure monitoring sessions, brief counseling and health education. With support from DOHMH, lay health workers at faith-based organizations and senior centers take blood pressure readings for community members, record their readings on index cards and provide counseling to support lifestyle change and health care access. However, lay health workers administrating the program report difficulties managing the volume of tracking cards, and express interest in better tools to manage the information. To address this limitation, the primary aim of this study is to test the feasibility of implementing a Personal Health Record (PHR) system in two predominately Black churches in NYC to help lay health workers track changes in blood pressure and health behaviors of the participating congregants. The secondary aims are to evaluate the effect of the PHR system on changes in blood pressure, physical activity, weight loss, fruit and vegetable intake, and number of visits to a primary care physician from baseline to 9 months. The investigators hypothesize that congregants who enroll in the PHR system will have a greater reduction in BP; an increased intake of fruits and vegetables and levels of physical activity; weight loss; and report a great number of visits to their doctor at 9 months.

The purpose of this study is to investigate the effect of plasma renin activity-guided therapy for determining hypertension treatment. Plasma renin is an enzyme in your blood that can be measured to determine your hypertension subtype. Once the subtype is known, doctors can prescribe specific medications to target your specific hypertension subtype. This study will investigate whether targeting the specific hypertension subtype helps to achieve blood pressure control sooner and with fewer medications compared to a standard fixed dose combination therapy.

Approximately half of hypertensive patients have diastolic dysfunction and diastolic dysfunction is associated with development of congestive heart failure and increased mortality. Although diastolic heart failure associated with hypertension is a clinically significant problem, few clinical trials have been conducted and there is no proven pharmacological therapy to improve outcomes. To the best of the investigators knowledge, there has been no randomized trial to demonstrate that an antihypertensive drug improves diastolic function in hypertensive patients with diastolic dysfunction. The investigators hypothesize that fimasartan added to standard therapy will be superior to placebo in improving diastolic dysfunction in mildly symptomatic patients with hypertension and diastolic dysfunction, and try to examine this hypothesis in a double-blind, randomized comparison study using echocardiography.

The goal is to investigate in patients with high blood pressure, BP, namely, those with systolic blood pressure and diastolic blood pressure, SBP/DBP higher than or equal to 140/90 mmHg, and high cardiovascular risk, under treatment with low-dose acetylsalicylic acid, ASA, whether changing the time they take the drug (same dose) to bedtime (from taking it at some point during the active part of the day) produces a drop in their blood pressure (mean systolic and diastolic over 24 hours) of at least 2.5 mm Hg; and also whether among non-dippers, under secondary treatment with low-dose ASA, there is be a greater decrease in their night BP when the drug is taken in the evening.

Recent studies have demonstrated that RAS inhibitors/calcium channel blockers are superior to RAS inhibitors/diuretics for reducing cardiovascular outcomes in hypertension. As such, RAS inhibitors/calcium channel blockers are recommended as first line combination treatment for hypertension. However, the mechanism for the superior efficacy of RAS inhibitors/calcium channel blockers are not well defined. This study will compare the efficacy of RAS inhibitors/calcium channel blockers vs RAS inhibitors/diuretics in terms of glucose tolerance and insulin resistance in hypertensive patients with metabolic syndrome. The primary endpoint will be that RAS inhibitors/calcium channel blockers will be more efficacious in reducing 2hour post prandial glucose compared to RAS inhibitors/diuretics.

The main purpose of this study is to evaluate the safety and efficacy of tadalafil in pediatric participants with pulmonary arterial hypertension. Participants will receive study treatment for 6 months in the double-blind period (Period 1), and then will be eligible to enroll into an open-label 2 year extension period (Period 2) during which participants will receive tadalafil.