Active clinical trials for "Tachycardia"

The purpose of this clinical study is to collect simultaneous, multiple view cardiac signals representing both transvenous ICDs (T-ICD) and sensing vectors from the subcutaneous implantable defibrillator system (S-ICD). Upon completion, this data will represent the first true database capable of comparing detection characteristics of transvenous and subcutaneous ICDs. Future protocols will be created to dictate the specific methods of such comparisons.

The purpose of this research is to simplify the standard recording system of the heart rhythm. The investigators desire to improve the ease of monitoring the cardiac rhythm for 24 hours. The investigators intent is to use a very small, innovative monitoring patch system that relieves the patient of wearing a cumbersome and uncomfortable recording system. This research trial will carry the title "The Simple ECG Monitoring" for Comparison of a Sternal ECG Recording System with a Standard ECG Recording System for Holter Monitoring. The data from the investigational device is for comparative purposes only. It will not be used by medical personnel for study subject treatment or diagnostic purposes.

The study is conducted in patients with atrial fibrillation undergoing clinically prescribed ablation. The study hypothesis is that ablation at specific sites that are identified to 'drive' the atrial fibrillation may improve the success of the ablation procedure.

Describe the mutual influences between trainings realized in implantation centers, medico-technical knowledges, technical implementation, perception, fears and appreciation felt by the patients during Home Monitoring implementation.

The purpose of this observational study is to collect data regarding the population of patients implanted with St. Jude Medical ICD.

We wish to study sleep architecture in patients with chronic orthostatic intolerance. We will test the null hypothesis that there is no difference in time during the various phases of sleep between patients and healthy control subjects.

The purpose of this registry is to collect information on the health status of patients receiving Marquis/Maximo VR Implantable Cardiac Defibrillators (ICDs), how the devices are being programmed and how this correlates to clinical patient outcome.

To screen by electrocardiography the entire population of 1,400 individuals in seven Amish Mennonite communities in order to perform genetic linkage studies of long QT syndrome (LQTS).

The aim of the submodule study is to assess whether a high BMI may influence the sensing performance and the sECG quality of the BIOMONITOR.

The purpose of the Medtronic Tachy Prediction Download (TPD) study is to collect data from an implantable cardiac defibrillator (ICD) device that will be used to identify markers for imminent onset of ventricular arrhythmias.