View clinical trials related to Ventricular Fibrillation.
Filter by:To generate a list of potential genetic markers that correlate with an increased risk of life-threatening arrhythmias. To evaluate ECG-based risk markers such as heart rate variability and T-wave Alternans for their association with arrhythmic events.
The aim of this prospective observational study is to evaluate the safety, over a follow-up of 2 years, of two strategies, consisting in performing or not performing defibrillation testing(DT) during first implant of implantable cardioverter defibrillator
Comparison of two different approaches to address the problem of malfunctioning ICD-leads. These leads consist of two parts. One that is used for detection of arrhythmias(and pacing if required) (Pace/Sense) and a second part that is used to deliver therapy is needed (Shock-coil). The two approaches compared are: Replacement of the entire lead in case of any lead malfunction versus placement of an additional pace/sense-lead if the shock-coil of the exiting lead was still functional.
The COGENT-4 Field Following Study will evaluate the clinical performance of the Boston Scientific TELIGEN 100 HE Implantable Cardioverter Defibrillator (ICD), the COGNIS 100 HE Cardiac Resynchronization Therapy ICD (CRT-D) systems and the RELIANCE 4-SITE defibrillation lead (when available). An optional sub-study will also evaluate the clinical performance of the Reverse Mode Switch (RMS) feature in the TELIGEN 100 HE DR ICD.
The purpose of this study is to determine if remote monitoring of implantable cardioverter defibrillators (ICD), compared with quarterly device interrogations in clinic, will improve patients' outcomes and satisfaction and will reduce health care costs.
This was a prospective, randomized, double blinded study in which patients undergoing a cardiopulmonary bypass (CPB) with aortic cross clamping were randomly assigned to receive amiodarone, lidocaine, or saline placebo prior to removal of the aortic cross clamp. (CPB is a technique that temporarily takes over the function of the heart and lungs during surgery, maintaining the circulation of blood and the oxygen content of the body.) Specifically, we will test the hypothesis that amiodarone is superior to both lidocaine and placebo in the prevention of a severely abnormal heart rhythm when the blood flow is restored to the heart after the aortic cross clamp is removed.
Re-hospitalizations or deaths by worsening heart failure are often preceded by distinct trends of clinical parameters such as atrial or ventricular arrhythmia, activity, heart rate variability, or ventricular ectopy. The Home Monitoring™ capability offered by BIOTRONIK active implants has the potential to detect some of these trends early and thus to offer the possibility to intervene in time for prevention of fatal worsening of heart failure. To investigate the predictive value of Home Monitoring parameters, patients with symptomatic heart failure and reduced ejection fraction receiving an implantable cardioverter-defibrillator (ICD) or an ICD in combination with cardiac resynchronization therapy (CRT-D) will be randomized between prospective patient management by Home Monitoring analysis or standard care. The influence of Home Monitoring on the clinical status of heart failure patients will be assessed.
This study is designed to examine the impact of an available technology within an automated external defibrillator (AEDs) to improve survival following out-of-hospital cardiac arrest for patients presenting in ventricular fibrillation.
To prospectively evaluate if the analysis of genetic polymorphisms can be used to identify patients at risk of ventricular tachycardia. To evaluate the influence of ICD-based diagnostic information on the long term treatment and management of primary prevention ICD-patients.
The purpose of this study is to determine whether the ability of clinicians to receive and review information from patients implanted with a heart device over the internet (remote care) is comparable to patients who are seen in-office for routine visits to check the status of their device.