Active clinical trials for "Hypertension"

The objective of this exploratory study is to examine the utility of high resolution computed tomography (HRCT) to measure changes in functional pulmonary imaging parameters as a function of long term iNO administrationusing the device INOpulse for 4 weeks in relation to Patient Reported Outcome (PRO) and exercise tolerance in subjects with WHO Group 3 PH associated with COPD on LTOT. Changes from baseline to 4 weeks of pulsed iNO and after 2 weeks of withdrawal from pulsed iNO will be evaluated.

Neurogenic Orthostatic Hypotension (NOH) is clinically defined as a consistent drop in systolic blood pressure (SBP) ≥30mmHg upon standing from a seated or lying position. However, 50% of NOH patients also have associated supine hypertension. It has been proposed that supine hypertension is the result of intact post-ganglionic sympathetic nerves and therefore due to residual sympathetic tone. Furthermore, research investigating the effects of melatonin shows blood pressure implication of this naturally secreted hormone. Specifically, melatonin has been investigated as a non-traditional anti-hypertensive agent for patients with essential and nocturnal hypertension. Central and peripheral mechanisms have been proposed to help explain how melatonin reduces blood pressures. Therefore, we aim to identify NOH patients as having either intact or denervated post-ganglionic sympathetic nerves, monitor the correlation to supine hypertension and subsequently investigate the effects of melatonin on blood pressure in these patients.

Clinical dose escalation drug trial to evaluate the effect of 3 different doses of dexmedetomidine on the pulmonary vascular bed in pediatric subjects with elevated pulmonary vascular resistance (PVR). The study will be conducted in 2 parts, with part 1 incorporating stopping rules to optimize safety of the drug in this population. The second part of this study will evaluate if the lowest safest dose, as determined in part 1, is adequate to provide effective sedation during a cardiac catheterization procedure.

Sildenafil is efficacious in newborns with persistent pulmonary hypertension and its use will reduce the need for inhaled nitric oxide.

This study will evaluate the effects of Vitamin D replacement and the effects of an approved medication for hypertension, aliskiren (Tekturna), in patients with high blood pressure who have low levels of vitamin D in their blood. The study will compare the effects of vitamin D or aliskiren alone and in combination on 24-hour blood pressure and biochemical parameters.

This study is designed to assess how rapidly and how safely Clevidipine can be used to control high Blood Pressure in patients with subarachnoid hemorrhage which is a type of brain bleed that happens because of a weak balloon like structure in one of the brain vessels. Control of blood pressure is of high value in preventing this balloon that ruptured and bled from rebleeding. The ultimate cure would be to shut down the aneurysm by a surgical procedure. Clevidipine is a drug that can lower blood pressure and it is given through the vein as a continuous infusion. It is a very short acting drug which is important in controlling labile blood pressure condition with rapid changes between up and down. This trial will test for its rapid actions and check for any side effects and possibly any other potential benefit.

The purpose of this study is to determine if Nebivolol has any effect on heart function determined by changes in echocardiographic data or exercise tolerance.

Treatment and control of hypertension is still insufficient. About 50% of the patients remain uncontrolled. Lack of compliance with discontinuation of drug treatment is an important reason for not achieving blood pressure. Several studies have shown that use of fixed combinations improve compliance significantly, by reducing the number of pill's intake. This study will assess the antihypertensive efficacy of Vasodip-Combo 20® [enalapril 20 mg + lercanidipine 10 mg] as a fixed combination drug in uncontrolled antihypertensive patients.

In an open label analysis, nebivolol has been shown to have a positive impact on quality of life in the general hypertensive population. That is, patients treated with nebivolol reported less side effects compared to those treated with metoprolol. Also, more nebivolol treated patients reached normalization of blood pressure. Although there is no data, it is believed that the impact would be similar in renal transplant recipients. The primary goal of this study is to determine if nebivolol will improve the quality of life measurements of kidney transplant recipients as compared to those treated with metoprolol succinate. This will be measured by comparing the scores of four quality of life questionnaires taken before and after 12 weeks of treatment with study drug. Other aims of this study are to determine if the use of nebivolol is cost-effective in the renal transplant recipient; determine if there is a change in urine protein excretion and renal function with the use of nebivolol; and determine the number of patients that maintain or achieve a target blood pressure of ≤ 120/80 mmHg.

Pulmonary arterial hypertension (PAH), or high blood pressure in the lungs, is common in patients with congenital heart disease. Historically these patients suffered significant morbidity and mortality due to a lack of effective therapies. More recently, advanced therapies which target the mechanisms underlying the development and progression of PAH have been introduced into clinical care. Oral, intravenous, subcutaneous, and inhaled therapies are all available for the treatment of PAH. Patients with PAH are first treated with oral agents (including sildenafil and bosentan). However, if these agents fail to achieve the desired effect for the patient, intravenous or inhaled therapies may be initiated. Combination therapy with multiple agents is common in routine clinical care. However, the most efficacious therapeutic regimen has yet to be delineated. The present study seeks to evaluate the efficacy of one specific regimen: iloprost, an inhaled prostacyclin derivative, used in combination with oral therapy (sildenafil and/or bosentan). Iloprost has been approved by the FDA for use in this patient population. Adults with PAH already receiving oral therapy will be invited to participate in this study. Iloprost will be added to their current therapeutic regimen for a period of three months, with pre- and post-treatment assessments. These will include a cardiopulmonary exercise test, BNP (a blood test), six minute walking distance, and a quality of life questionnaire.