Active clinical trials for "Hypertension"

This study is to establish a noninvasive diagnostic platform based on hemodynamic information for the assessment of liver fibrosis, liver cirrhosis and portal hypertension.

To develop a patient-reported questionnaire to investigate the impact of PAH (pulmonary arterial hypertension) on patients' daily lives in terms of bothersomeness and disability.

Social deprivation during pregnancy is associated to adverse perinatal outcomes. However, prenatal screening of social deprivation by reliable measurement is not performed. Prevalence of social deprivation is yet underestimated during pregnancy and vulnerable women are not being provided optimal prenatal care. Our aim is to validate EPICES score during pregnancy.

Monogenic hypertension, which follows the rules of Mendel's genetic law, is one of the most important causes of hypertension. Generally, patients occur hypertension in early age, have family history, and often manifest severe hypertension or refractory hypertension. At present, only a few hypertension centers of hospitals in China will help clinically difficult diagnosis hypertensive patients to test some selective genes, while most of other hospitals still perform diagnosis based on biochemical examination and clinical symptoms. Therefore, in order to provide better guidance for the diagnosis and treatment for hypertensive patients, this project aims to develop a single gene detection panel for genetic hypertension, so as to provide new diagnostic technology for early intervention, prevention and treatment of hypertension in clinics.

A comparative, observational, cross-sectional and prolective diagnostic test study, including patients that have had a right heart catheterization and were referred for a CT pulmonary angiography as part of their imaging workup protocol for pulmonary hypertension. Dual-energy computed tomography (DECT) pulmonary angiography was performed on each patient to obtain perfusion maps and do a quantitative analysis. Segments with and without perfusion defects according to significant differences in the quantitative values, were defined as compatible or not with chronic thromboembolism. To assess the accuracy of the method and evaluate its performance, these results were compared with the sole results from the right heart catheterization, known to be the gold standard diagnostic tool.

Investigators aim to assess sensitivity and specificity of transcranial doppler in ruling out intracranial hypertension in all patients admitted to intensive care unit for brain injury and needing Intracranial Pressure (ICP) monitoring (according to international guidelines). Non invasive ICP measurement through the use of transcranial doppler will be carried out before and after standard invasive ICP monitoring placement.

Primary hypothesis: Catheter-based renal denervation reduces central sympathetic activation in patients with refractory hypertension. Secondary hypotheses: The magnitude of the individual depressor response after catheter-based renal denervation depends on the extent of sympathoinhibition. Both, the reduction in arterial pressure and in central sympathetic activation are sustained over time up to 24±3 months after catheter-based renal denervation. Catheter-based renal denervation resets the sympathetic baroreflex to lower blood pressure values.

The purpose of this study is to find the change of blood pressure (BP) control pattern (true controlled, white-coat, masked, and sustained uncontrolled/ dipper, non-dipper, reverse-dipper, and extreme-dipper) in patients with chronic kidney disease (CKD) over 3 years. And Other objective is the relationship between the BP control pattern and the target organ damages such as renal function, proteinuria, left ventricular hypertrophy (LVH), and so on. In addition, we will find clinical factors related to the BP control pattern.

Background: Persistent severe pulmonary hypertension (PH) after mechanical valve replacement is a frequent finding in patients with severe valve-diseases. The reasons to develop PH are multifactorial and the prevalence of severe PH significantly worsens the patients´ outcome. Aims: (i) To define the prevalence of PH in patients after valve replacement and (ii) to identify factors predicting persistent PH. Methods: All patients which underwent valve replacement at our institution between the years 2008 -2010 will be screened retrospectively. Those patients with pre- procedural proven PH by means of right-heart catheterization will receive prospective follow-up with echocardiography. Diagnosis of persistent PH will be confirmed with right heart catheterization.

Registry to follow patients with sarcoidosis associated pulmonary hypertension