Active clinical trials for "Tachycardia"

To evaluate children undergoing catheter ablation at pediatric centers in North America in order to provide information on the incidence rate of serious cardiac damage as a result of ablation, the incidence rate and time course of recurrence after initially successful ablation, and the incidence rate of proarrhythmia following ablation.

Paroxysmal supraventricular tachycardia (PSVT) is a sporadic, sudden, and recurring tachycardia that is caused by an altered electrical conductivity in the heart. It causes palpitations and a rapid heart rate, which may induce fear in the patient and negatively impact the patient's quality of life. Therefore, most patients experience not only physical symptoms of PSVT, but also dramatic psychological burdens. As PSVT drug development efforts advance, it has become increasingly important to document the impact of PSVT in a systematic way, in terms of the disease natural history and clinical characteristics of PSVT episodes, as well as the psychological impact of the condition as reported by patients over time. In order to meet the needs for ongoing, systematic data collection on PSVT, a multinational registry, The PSVT Place Registry (www.PSVTPlaceRegistry.com), is being implemented and will be initially comprised of data entered directly by patients. The long-term registry is designed with a participant-focused approach to enable continuity of data collection and minimization of impact from changes of participants' health care providers. The registry may be expanded at a later time to include physician-reported data. The information from the registry is planned to be a resource for participants with PSVT, their families and support networks, their doctors, and the research community to better understand PSVT-related symptoms and awareness, PSVT diagnoses, patient self-management, medical treatments for PSVT, and impact of PSVT on quality of life from the patient perspective.

The purpose of this retrospective study is to test the hypothesis that uncontrolled tachycardia serves as a risk factor for adverse cardiovascular events and poor outcome after Subarachnoid Hemorrhage (SAH).

The purpose of this post approval study is to characterize the chronic performance of the SJM Optisure family of HV leads in patients.

A retrospective chart review will be performed on 50 patients who received RFA for the treatment of EAT between August 1992 and August 2003 at Children's Healthcare of Atlanta. The use of the CARTO/Biosense catheter has improved outcomes with decreased radiation exposure to patients.

Use of dipole density mapping to identify activation in complex supraventricular tachycardias

This study is a single-arm, prospective, multi-center study to assess clinical performance of the SHERLOCK 3CG™ Diamond Tip Confirmation System (TCS) with MODUS II software for confirming correct tip position of peripherally inserted central catheters (PICCs) in adult subjects with altered cardiac rhythm.

This is a multi-center prospective registry of patients with an ejection fraction (EF) ≤ 35% following coronary artery bypass graft (CABG) surgery in order to test the hypothesis that wearable defibrillators (WD) will decrease overall mortality after discharge by decreasing arrhythmic death in this select population with high risk for sudden cardiac death (SCD). This is a pilot project to determine the feasibility of a larger-scale study.

This study will assess the outcomes of using magnetic navigation to treat ventricular tachycardia (VT) or premature ventricular contractions (PVCs) that occur for unknown reasons and are not related to structural heart disease.

Patients with ventricular tachycardia (VT) undergo catheter ablation. During the ablation procedure, the heart is mapped to determine areas of heart muscle damage. The heart scarring areas are often the source of the VT. Delayed enhancement CT has recently been used to determine areas of scarring . This study is to determine if the areas of damaged heart muscle mapped with the delayed enhancement CT correlate with the same areas that are determined during the catheter ablation.