View clinical trials related to Defibrillators, Implantable.
Filter by:This study examines possible risk factors with regard to complications following pacemaker or implantable defibrillator cardioverter (ICD) implantation.
Implantable Cardioverter Defibrillators (ICDs) provide a shock or pacing therapy to bring back a normal heart beat when a patient experiences a dangerous abnormal heart rhythm such as ventricular tachycardia (VT). ICDs are very successful in bringing back a normal heart beat when VT occurs, but they do not prevent further dangerous heart rhythms from occurring. This study is designed to determine the best way to manage patients who have an ICD and who continue to have episodes of VT. There are two methods for treatment the VT: 1) Ablation, and 2) Medication. An ablation procedure involves placing a flexible catheter (insulated wire) in the groin area and threading it into the heart. After the doctor has located the affected area responsible for the VT, radiofrequency energy is delivered by the power generator through the catheter to the inside of the heart. The radiofrequency energy ablates (burns) a small area of the heart tissue thought to cause the VT. A medication called Amiodarone is an "anti-arrhythmic" prescribed to prevent abnormal heart rhythms from recurring. The purpose of this study is to compare these two different methods for treating VT. Treatment with ablation and amiodarone are both considered the standard of care for patients with VT but they have not been compared directly in a study like this before.
Patients who receive an implantable cardioverter-defibrillator (ICD) usually undergo testing at the end of the ICD procedure to measure the amount of energy able to successfully defibrillate the heart (defibrillation threshold testing, or DFT). This study proposes to perform that measurement in pediatric patients already undergoing clinically necessary ICD procedures, with the measurement performed using a binary search method that has been previously validated in adult cohorts. We hypothesize that pediatric DFTs, when precisely measured, may be lower than previously assumed from extrapolation of adult data.
This study will be a qualitative survey to understand the expectations of defibrillator patients with regards to their device. It is unknown what ICD (implantable-cardioverter defibrillator) patients understand about their device and its purpose, thus we will be talking to them about their device. Also, we will be interested in studying their beliefs on how the ICD impacts their life expectancy and quality of life.
The implantable cardioverter defibrillator (ICD) has been shown to be effective in preventing mortality in patients with ventricular tachyarrhythmia. However, the expanding indications of this therapy will have an impact on the follow-up policy. Currently, regular follow-up visits are scheduled every 3 months. In this context, the recently-introduced "remote monitoring" devices constitute a promising new technique, allowing to transmit information about the status of the device and ICD therapies, without direct contact between patients and physicians. This monitoring by "tele-follow-up" might reduce the cost of care by avoiding useless visits to the implantation centre. The aim of our study is to assess the cost-benefit ratio of "tele-follow-up" assisted care as compared with the conventional ICD follow-up.
An implantable cardioverter-defibrillator (ICD) is a small device that is surgically implanted in the chest or abdomen and uses electrical pulses or shocks to help control life-threatening, irregular heartbeats. Increasing aerobic exercise may provide health benefits to people with ICDs. This study will examine the effects of an exercise program on heart and lung function in people who have an ICD.
This is a hypothesis testing study, the hypothesis being that dietary supplements of n-PUFAs concentrates are anti-arrhythmic in ventricular arrhythmic substrates. Study Aims: To investigate whether dietary supplements of n-3 polyunsaturated fatty acid concentrates (2g PUFAs/day, Omacor) reduces MTWA (a surrogate endpoint for ventricular arrhythmia substrate) in patients with ICDs for malignant ventricular arrhythmias.
The purpose of this study is to determine if heredity influences the risk of life-threatening heart rhythms (ventricular tachycardia and ventricular fibrillation) after heart attack (myocardial infarction).
To evaluate short-term and long-term effects by MR imaging on the technical and functional status of implantable cardioverter defibrillators.
The Dual Chamber & Atrial Tachyarrhythmias Adverse Events Study (DATAS) was designed to analyze the ability of dual chamber ICDs, to reduce clinically significant adverse events as compared to single chamber ICD in a non selected population with conventional indication of ICD implantation.