View clinical trials related to Arrhythmias, Cardiac.
Filter by:The objective of the study is to evaluate the efficacy of monitoring after discharge of patients with high-risk acute coronary syndrome.
This study is a prevelance trial looking at how sleep apnoea affects the heart especially heart rhythms. Previous research shows that patients suffering from sleep apnoea are much more likely to get heart disease and abnormal heart rhythms (arrhythmias). These defects are sometimes missed by the traditional methods of monitoring i.e. 24-hour Holter monitor and ECGs. This means potentially dangerous arrhythmias may not be detected. Additionally, standard therapy for sleep apnoea does not significantly reduce the risk of heart disease. This study will recruit 200 participants over a period of 18 months. The research team will observe the heart rhythms of sleep apnoea patients by inserting an implantable loop recorder (ILR) in up to 100 participants. The other 100 patients will simply have standard care. This device will monitor the heart continuously for 3 years allowing us to detect abnormal heart rhythms and treat as necessary. Demonstrating the incidence of arrhythmia can lead onto a larger study which may change future sleep apnoea management improving their cardiovascular outcomes. Other markers of heart disease such as; blood tests, Magnetocardiography and Echocardiography will be performed on participants to shed more light on the mechanisms which link sleep apnoea and heart disease/arrhythmia.
Atrial fibrillation (AF) is the most common cardiac arrhythmia affecting millions of people in the US and around the world. Over the last 20 years, catheter based AF ablation has been widely adopted offering improved symptom control for many patients worldwide. However, long-term success rates remain suboptimal. Prior work indicates that distal connections between coronary sinus musculature and the left atrium exist and provide a substrate for single or multiple reentry beats as a trigger for atrial fibrillation. In this trial, the investigators will examine the efficacy of elimination of distal connection(s) between coronary sinus and left atrial musculature for suppression of recurrent atrial arrhythmias.
Studies have shown that the risk of developing heart arrhythmias, is increased in patients receiving medication for Attention-deficit hyperactivity disorder (ADHD) and depression. The QT-interval on a electrocardiogram (ECG) is often used to assess the patients risk of developing heart arrhythmias. The QT-interval defines the hearts electrical resting period and a long interval is linked to an increased risk of developing heart arrhythmias. In this project the investigators wish to examine possible side-effects in patients receiving medication for ADHD and depression and their dynamic QT-interval changes, by analysing the ECG changes that occur during "Brisk Standing".
This is a prospective, 1:1 randomized, interventional, multicenter and international trial. Approximately 790 subjects are expected to be enrolled to 40 sites in the south of Europe and Middle East. The objective of this study is to evaluate and compare the efficacy of the first appropriate shock of an ICD in a ventricular tachyarrhythmia, when the waveform of the shock is programmed with the standard waveform, Fixed Tilt with a value of 65% (Control Group), versus the exclusive waveform programmable in SJM ICDs, Fixed Pulse Width (Study Group), in a standard population of subjects with ICD indication.
This prospective multicenter registry study aims to determine whether device-detected sleep-disordered breathing events are associated increased risk of cardiac arrhythmias or other cardiovascular outcomes.
The purpose of the Confirm Rx SMART Registry is to collect real world data to assess the safety and performance of the Confirm Rx Insertable Cardiac Monitor (ICM) and system over a 12 month period. A sub-set of subjects enrolled in the Confirm Rx SMART Registry will meet the Post Market Clinical Follow-Up (PMCF) requirement for CE mark.
This study will test the hypothesis that implantation of a subcutaneous implantable cardioverter defibrillator (S-ICD) without performing a defibrillation test is non-inferior to S-ICD implant with a defibrillation test with regards to the primary endpoint failed first shock in a spontaneous arrhythmia episode when implant position is confirmed with PRAETORIAN score.
The objective of CAREBANK study is to establish definitive relationships with human cardiac samples and clinical phenotypes in patients undergoing cardiac procedures. Specifically, the investigators aim at comparing atrial phenotypes from atrial fibrillation patients and controls. The work consists of three broad categories: A) role of atrial cardiomyopathy in atrial fibrillation; B) genetic defects predisposing to atrial fibrillation; and C) the role of inflammation in atrial fibrillation.
This study is performed to assess if PET-MR imaging can improve treatment of patients with irregular heart rate and heart failure. Heart failure occurs when the heart muscle is too weak to do his work correctly. Irregular heart rate can be related to numerous diseases. One category of irregular heart rate is called ventricular arrhythmia. It is often seen in patients who have had a heart attack. This type of arrhythmia can be dangerous and can cause sudden death. To prevent these arrhythmias, doctors can perform procedures that burn the source of arrhythmia in the heart muscle. This is called ablation. Unfortunately, ablation does not fix the problem in 100% of patients and some will still have the arrhythmia requiring repeated procedure. The purpose of this study is to find new ways of guiding the doctors performing ablation, hoping to improve the success rate of the procedure.