Summary: This study is being done to determine whether there is an increase in sympathetic nerve activity before the onset of ventricular arrhythmias or irregular heartbeat rhythm. In addition, this study is looking at the relationship between sympathetic nerve activity and how patients with ventricular arrhythmias respond to catheter ablation treatment.

Summary: In this single arm, open label study, investigators will evaluate the feasibility of using the Cereset (formerly known as HIRREM - high-resolution relational, resonance-based electroencephalic mirroring) intervention for a stressed population confronting an acute burden on their lives - caregivers of newly diagnosed high-grade glioma patients. The Cereset intervention is a closed-loop acoustic sti...

Summary: The purpose of this study is to evaluate the safety and efficacy of cardiac radioablation (CRA) as a means of noninvasive treatment of ventricular tachycardia (VT) refractory to both medication and catheter ablation.

Summary: Postural tachycardia syndrome (POTS) is a relatively common condition affecting mostly otherwise healthy young women. These patients have high heart rate and disabling symptoms during standing. Quality of life may be poor. The sympathetic nerves in the autonomic nervous system help to maintain normal blood pressures and heart rates during activities of daily life.The purpose of this study is to de...

Summary: The purpose of this study is to assess the performance and safety for the use of the OPTRELL Catheter for intracardiac mapping in the atria and ventricles.

Summary: The purpose of this research study is to examine the effect of cardiac sympathetic denervation (CSD) surgery on life threatening abnormal heart rhythms called ventricular tachycardia or ventricular fibrillation that can lead to sudden cardiac death. Subjects will be asked to participate in this research study if they have recurrent ventricular tachycardia (at least one ICD shock for ventricular ta...

Summary: Paroxysmal supraventricular tachycardia known as PSVT includes atrioventricular reentrant tachycardia (AVRT) and atrioventricular nodal reentrant tachycardia (AVNRT).This study is multicenter, retrospective, cohort study. This study will collect real world data of AVNRT and AVRT cohorts retrospectively to evaluate the effectiveness and safety in real world clinical practice. 300 subjects with PSVT...

Summary: This is an observational study of 10 Chagas Disease patients with Ventricular Tachycardia that have failed prior catheter ablation or have this procedure contraindicated due to clinical status. Those patients will underwent to Stereotactic Body Radiation Therapy (SBRT) targeting the area of the heart of the VT circuits. Radioablation target will be defined based on prior ablation electroanatomical...

Summary: The study is designed to assess the safety and efficacy of the Next Generation ICD lead.

Summary: The recent study is planned to investigate the impact of Ertugliflozin on total burden of ventricular arrhythmias. Further objectives will be number of therapeutic interventions of implanted devices, atrial fibrillation, heart failure biomarker and changes in physical function quality of life, stress and anxiety.

Summary: Ventricular tachycardia (VT) contributes to over 350,000 sudden deaths each year in the US. Malignant VTs involve an electrical short circuit in the heart, formed by narrow channels of surviving tissue inside myocardial scar. Current treatment for VT consists of either implantable defibrillators (ICDs), suppressive drug therapy, catheter ablation or a combination of all 3.Implantable Defibrillator...

Summary: This study aims to investigate whether the treatment of non-anemic iron deficiency with intravenous iron sucrose will result in decreased symptom reporting and improved cardiovascular indices in patients with Postural Orthostatic Tachycardia syndrome (POTS).