View clinical trials related to Arrhythmia.
Filter by:This study is being conducted to see if magnesium can reduce the number of shocks patients with ICDs experience and to see if magnesium supplementation improves patients quality of life.
This study compares the pacemaker's automatic pacing threshold measurements to the manual measurements conducted by a health care provider.
The main purpose of the Product Performance Report (formerly referred to as System Longevity Study) is to evaluate long-term performance of Medtronic market-released cardiac rhythm products by analyzing product survival probabilities.
There are many reports about the association of coronary artery disease (CAD) and cerebral artery stenosis (CAS), which had been proved to induce stroke and cognition decline after the revascularization including coronary bypass surgery (CABG) or percutaneous coronary intervention. Perfusion defect on nuclear brain scan is also noted to correlate with these neurological complications. On the other hand, the perioperative arrhythmia and following cerebral embolism was also attributed to be one factor inducing such neurological hazards. In the patients with coexistent CAD and CAS (1st group), and also the patients scheduled for CABG or percutaneous coronary intervention (PCI) (2nd group), we, the researchers at Far Eastern Memorial Hospital, attempted to integrate all the parameters mention above, including angiography of coronary and cerebral system, quantitative analysis of nuclear brain scan, biochemical profile, and signals of a new ambulatory device which could record the electrocardiograph (ECG) and electroencephalograph (EEG) simultaneously, in order to define the correlation between them. A chorological relation between EEG signals and ECG signals is our first target to be worked out. Thereafter, we hope to establish a regression model of all involved parameters according to the relation. Such a model, we believe, is essential not only to explain the post-CABG neurological complications, but to prevent them. Furthermore, for the undetermined ischemic stroke patients who had no obvious culprit artery or embolism source, the paroxysmal arrhythmia had long been regarded as the cause. Whether a paroxysmal atrial fibrillation, which had not been disclosed by routine ECG, could induce most of such a stroke is still not known. With this new ambulatory device which could record the electrocardiograph (ECG) and electroencephalograph (EEG) simultaneously, we want to answer the question.
The study is being performed to better understand dialysis techniques which keep heart functions stable during dialysis. People on dialysis have a high risk for heart disease and strokes. More information about dialysis techniques that keep hearts stable may help prevent the high risk of cardiovascular disease and death and help to reduce discomfort during dialysis. This study will look at the way that the magnesium in dialysate affects heart function during dialysis. High or low levels of magnesium may change the way hearts beat. The question asked is if lowering the amount of magnesium in dialysate will affect the amount of magnesium in blood or change the heart beat.
The Registry will evaluate how HRV Monitor diagnostics change after cardiac resynchronization therapy in patients with heart failure.
Primary objective: - to assess the efficacy of SSR149744C for the prevention of ventricular arrhythmia-triggered ICD interventions. Secondary objectives: - to assess versus placebo the tolerability of the different dose regimens of SSR149744C in the selected population. - to document SSR149744C plasma level during the study.
People with epilepsy are at a higher risk for sudden unexpected death than the general population. Sudden unexpected death in epilepsy (SUDEP) is a major cause of death in this population, accounting for 10-50% of deaths for those with epilepsy. The risk for SUDEP is particularly high for those with refractory epilepsy. Several lines of evidence support a cardiac mechanism for SUDEP. This study plans to determine: 1. the frequency and types of cardiac arrhythmias that occur in this population and 2. whether these are increased above the general population in the same age group. Additionally, these data will be correlated to specific clinical data, including seizure history, anticonvulsant medications, and any accompanying clinical symptoms.
Both segmental, ostial and circumferential, extra-ostial pulmonary vein (PV) isolation have been proven effective in the treatment of atrial fibrillation. In this study patients with symptomatic paroxystic or persistent AF were randomised to one of the above mentioned ablation methods. The primary endpoints were recurrent AF and recurrence of left atrium-PV conduction.
The purpose of this study is to determine if patients implanted with a St. Jude Medical (SJM) implantable cardioverter defibrillator (ICD) will benefit by using AutoIntrinsic Conduction Search (AICS) rather than only a programmed AV/PV delay. This study will compare the two methods of programming with respect to intrinsic activity.