Active clinical trials for "Heart Diseases"

The purpose of the study is to compare the various 2D and 3D methods of valvular heart disease quantification (Doppler, PISA, VCA, volumetric method) and strain with cardiac magnetic resonance (CMR) measurements of left and right ventricular systolic function strain and myocardial fibrosis assessment.

The trial will include 2500 patients with evident or suspected ischemic heart disease refered to Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, for perfusion imaging by 15O-H2O PET/CT scan of the heart during rest and stress. The patients will undergo the clinical scan as normal. Data from the scans will be used to determine reference values of the examination. Follow up will be done for up to 10 years in regards to major cardiovascular events in order to determine the prognostic value of the scan.

This study is being conducted to provide access to and collect test data for an established nuclear medicine diagnostic imaging test called Positron Emission Tomography (PET), using a specific radioactive drug called Ammonia N-13 (Ammonia), referred to simply as an Ammonia PET scan, which is used to visualize the blood flow through the blood vessels and into the heart muscle in order to identify areas of restricted blood flow within the heart. The scanner used in this study may be a stand-alone PET scanner or a PET/CT scanner, which combines the PET scanner and a Computed Tomography (CT) scanner into a single device. Unless otherwise stated in this consent form, the term PET will be used to refer to both stand-alone PET and PET/CT scanners. While physicians have used the Ammonia PET test for many years to visualize (image) the blood flow into the heart muscle (perfusion), it is now possible to also measure the flow of blood into the heart muscle. Research studies have demonstrated clinical value in reviewing the measured blood flow values in addition to reviewing the perfusion images of blood flow into the heart muscle. Therefore, this study will establish a database of a large number of Ammonia PET measured blood flow values to serve as a future reference.

Cardio-oncology is an emerging field. Most of the data available have been issued from either retrospective analysis, industry data or pharmacovigilance data. These data sources include a number of bias. CONFUCIUS is a single tertiary centre prospective registry including all patients who have been referred for cardio-oncology assessemnt. The objectives are to provide a comprehensive vue of cardoi-oncology, enable to detect early signals of cardiotoxicity and enhance ancillary projetcts aiming at specific populations (e.g., type of cancer) and/or drugs.

The investigator aimed to evaluate the long-term (up to 10 years) follow-up of the patients who enrolled the IVUS-XPL study (Impact of IntraVascular UltraSound Guidance on the Outcomes of Xience Prime Stents in Long Lesions), which was shown the superiority of IVUS-guided stent implantation at 1 year in terms of major adverse cardiac events.

Rationale: During cardiac surgery, neonates are at high risk of cerebral damage: 36-78% will have new cerebral lesions after surgery. Adequate cerebral perfusion (CBF) is mandatory to prevent postoperative brain damage and neurobehavioral outcomes. For CBF, the systemic blood pressure should be managed above the brain's critical closing pressure (CrCP), and preferably above the lower limit of autoregulation (LLA), if intact. Objective: The investigators aim to study the patient specific threshold for arterial blood pressure to maintain adequate cerebral perfusion (CBFV) in the perioperative setting and the association between perioperative abnormalities with postoperative brain damage and neurobehavioral outcomes. Study design: In a prospective observational cohort study bilateral cerebral blood flow velocity (CBFV) measurements are performed with transcranial doppler (TCD), together with invasive arterial blood pressure (iABP) measurements in the perioperative period. Study population: Neonates (semi-) electively scheduled for major cardiac- surgery. Main study parameters/endpoints: Main study endpoint is the Critical Closing Pressure (CrCP) within and between subjects. Furthermore, we evaluate the association with new white matter injury (WMI) on the postoperative MRI. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Anticipated risks caused by TCD monitoring in neonates are considered negligible when monitoring is executed according to the BMUS guidelines and ALARA principle. Each time energy is converted from one form to another, part of it is inevitably converted to heat. Theoretically, if at all, the maximum temperature rise will happen at the skin- temporal bone side, where the monitoring probes are placed. A maximal thermal index (TI) of 0.7 is allowed, this corresponds with 0.7 o C temperature rise. Patients might not benefit from participation in this study as the TCD measurements are only visible and available to the TCD operator, and we do not yet know how the results could possibly influence the procedure. However, in the unlikely situation where cerebral perfusion is severely compromised for a longer period of time or in case of occurrence of large air emboli, improper cannulation or cross clamping the cardiac team will be notified. Therefore, a neonate might benefit from participation.

The study aim is to test the diagnostic performance of internists interpreting echo images aided by the AISAP CARDIO V0.7 diagnostic support system. Ground truth will be established by an interpretation by cardiologists specialized in echo, of the same POCUS images (acquired by the internist \ sonographer ). Up to 1000 subjects; Study population will be distributed according to the following schema: Group 1 -up to 800 patients hospitalized in the Internal Medicine division Group 2 - up to 200 patients hospitalized in the acute Geriatric division

NPs can be used To detect subset of asymptomatic with subtle LV dysfunction for further evaluation and earlier referral for intervention and its correlation with echocardiographic finding.

To evaluate the long-term clinical outcomes and prognostic factors in patients with coronary artery disease (CAD) undergoing invasive coronary angiography (ICA), intravascular imaging, or invasive physiologic assessment.

Investigating the diagnostic accuracy of online Ultrasonic Flow Ratio (UFR) assessment to identify hemodynamically significant coronary stenosis in patients with suspected ischemic heart disease using angiography-derived fractional flow reserve (FFR) as a reference standard.