Active clinical trials for "Heart and Blood Diseases"

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.

Evaluation of Severity of Heart Failure in Children Attending Cardiology Unit, Assiut University Children Hospital

New ESC 2015 recommendations with encouragement to set up a Multidisciplinary Consultation Meeting to discuss the medical and surgical management of endocarditis, set up at Strasbourg University Hospital in October 2016: Impact and benefits

Quantitative Flow Ratio (QFR) is a novel method for evaluating the functional significance of coronary stenosis. Virtual stent implantation technique combined with QFR was recently developed to predict the functional significance of coronary stenosis as if the stenosis was revascularized. The purpose of this study is to evaluate the diagnostic accuracy of QFR in in tandem lesions with fractional flow reserve (FFR) as the reference standard. The secondary purpose is to evaluate the diagnostic accuracy of QFR-based virtual stent technique in predicting the FFR values after revascularizing the culprit lesion.

Dry cough is the most common adverse reaction of angiotensin converting enzyme, including enalapril, in Chinese population. Clinical observations suggest that the incidence of ACEI-induced dry cough is different between Chinese and other racial groups, however, there is still lack of research data in Chinese. Stroke is the second leading cause of death in the world and leading cause of death in China. Except the known risk factor such as hypertension, high homocysteine level, folic acid deficiency, the impact of genetics should not be ignored. In this study, we will investigate whether there are specific genotypes which may predict the incidence of (1)enalapril-induced dry cough in Chinese and (2)first stroke in hypertensive patients taking enalapril or enalapril-folic acid therapy, so as to provide a basis for developing guidelines on precision medication in enalapril therapy apply to Chinese population.

This is a single-center, retrospective, open-label study. This study is planned to investigate the accuracy of mRS and NIHSS, comparing with the accuracy of CSF pressure and papilledema grade in assessing cerebral venous sinus thrombosis.

Diabetic retinopathy (DR) is one of the most common causes of blindness worldwide. It is a progressive disease and its detection in early phases is very crucial for visional outcomes. miRNA of exosomes has been recently considered as a potential circulating marker of oculopathy, including age-related macular degeneration and uveal melanoma. Therefore, the primary objective of this study is to evaluate whether the serum exosomal miRNA could be prospective prognosis biomarker to investigate the initiation and development of DR. This case-control study is planned to include diabetic patients, and patients without DR, which serve as controls. Other participants will be divided into four groups by different DR stages according to the guideline from AAO. Information and samples of all trial participants will be collected at the inception of the study, including basic information, medical history, serum samples, and several ophthalmologic examinations. Then these information and examinations will be collected at regular intervals: every 12 months until 5 years. Different statistical methods will be used to identify significant associations between DR progression and different exosomal miRNA. We hypothesis that there could exist alert level of exosomal miRNAs which indicate the onset and development of DR in diabetic patients. Moreover, the selected exosomal miRNAs, being considered together with other information including medical history, blood indicators and ophthalmologic examinations, to be chosen-optimized as a prognostic model for DR, which may help predicting high risk groups of DR and those with poor prognosis. Based on clinical trial data, we will further discuss about possible roles of identified miRNA of exosomes in the pathogenesis of DR.

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.

The trial is a single centre, retrospective cohort, non-interventional study to be conducted in the department of cardiology, Chinese PLA General Hospital, Beijing, China. To evaluate the link between mean perioperative clinical heart rate and short-term composite outcomes during PCI among local CHD patients.

Comparing two biological valves in a prospective randomized study. Mosaic Ultra and Trifecta. The investigators are looking at EOA and the Pressure Gradients over the valve by patients with the same annulus measured by a hegar dilatator.