Active clinical trials for "Arrhythmias, Cardiac"

The goal of this observational design is to study the effects of intravenous corticosteroids on heart rate variability, arrhythmias and microalbuminuria. Some previous studies have shown that intravenous corticosteroids could induce bradycardia but also supra-ventricular tachycardia and atrial fibrillation. A second goal of this study is to investigate whether exogenous corticosteroids may induce microalbuminuria. A large retrospective study has revealed an association between microalbuminuria and corticosteroid use in the year preceding the measurement.

The purpose of this trial is to determine if implantable cardiac device leads implanted in the His bundle are capable of detecting ventricular arrhythmias.

The purpose of this study is to utilize non-invasive, easily measurable biomarkers (heart rate, skin temperature, sleep, and activity) in the post surgical discharge period to identify trends which correlate with improved outcome and early recovery (return to baseline activity). These are measured (captured) utilizing a wearable technology (WT) device. Return to baseline (RTB) activity for the purpose of this study is defined primarily as step count normalization as a surrogate of activity (pre versus post operative step count), and heart rate variability normalization back to preoperative baseline. Increased heart rate variability has been studied in acute care settings as a marker of poor prognosis. Please note that return to baseline is not defined for the pediatric population in the same way as adults (which is primarily questionnaire based and not applicable in children).

The One Hospital ClinicalService Project is an integrated system composed by a network of International Hospital Departments, a clinical data repository and a shared environment for the collection, management, analysis and reporting of clinical and diagnostics data from patients treated by Medtronic therapies or patients wearing Medtronic implantable devices used within their intended use. The One Hospital ClinicalService is composed by a suite of systematic, data-guided activities designed to bring about immediate improvements in health delivery in particular settings. Data are prospectively collected. An independent committee of physicians prospectively identifies key clinical questions on a yearly basis for development of quality improvement activities, analyses and publications. A charter, approved by Hospital Istitutional Review Boards or other Hospital entities, assigns the ownership of data to the centers and governs the conduct of the project and the relationship of the scientific committee and Medtronic. Hospital is the data controller, while Medtronic is the data processor on behalf of the Hospital. Data collected for quality improvement purposes may be mined to perform clinical research.

ECG is one of the most important non-invasive method to diagnose CAD and arrhythmia. However, clinically it still has its limitation. Because the electrical field could induce a magnetic field, the newly developed non-contact technique, magnetocardiography, was established to detect the local magnetic field component of the heart. It is safe and more convenient. In this study, we try to define and validate the magnetocardiographic patterns in the patients with cardiac arrhythmias or ischemia.

This study aims at recording cardiac arrhythmias in patients after open heart surgery. The arrhythmias will be monitored during the entire first postoperative period, till six weeks after surgery.

An increasing proportion of women with heart disease now go through pregnancy and childbirth. More knowledge about the risk of complications and adverse outcomes for the mother and the baby is needed to guide clinical care in this diverse patient group. The purpose of this study is to, in a cohort of pregnant women with heart disease; determine fetal growth, and risk of fetal growth restriction and preterm birth determine whether maternal blood biomarkers are associated with development of preeclampsia, the time of delivery and maternal and perinatal adverse outcomes determine the risk of hypertensive pregnancy complications The expected outcome of the project is to increase the knowledge of optimal diagnosis and treatment of women with heart disease that go through pregnancy to be able to improve clinical care and the outcomes for mother and baby.

150 patients admitted to University Hospital Southampton with heart failure will undergo comprehensive Cardiovascular Magnetic Resonance (CMR) imagining during their admission and continuous heart rhythm monitoring using wearable technology post discharge. We hypothesise that analysis of this outcome data will discover novel CMR tissue characterisation and heart rhythm biomarkers that can be used to predict adverse clinical outcomes in heart failure populations and how individual patients will respond to specific therapies.

This study aims to assess the feasibility and reliability of smart watch iECG provided by the Apple Watch/Apple iPhone for the detection of different cardiac arrhythmias. In this study, results from a 12-lead ECG will be set as the gold standard for the arrhythmia diagnosis, and results from the smart watch iECG (Apple watch/Apple iPhone application and Cardiologist's interpretations) as the index tests. The iECG tracings will be recorded simultaneously, starting and ending at the same time as the standard 12-lead ECG, using the built-in sensors of a smart watch (Apple Watch Series 4) with the ECG application.

This is a purely observational project and the objectives are to record and analyze the local potentials at the site of Premature Ventricular Contraction (VPC) focus through the Rhythmia system, ti determine the short and long-term success of the procedure and compare it to the existing literature about standard procedures, to highlight the advantages of the system compared to conventional mapping and to characterize optimal pace map or activation map as achieved by the Rhythmia system.