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83 studies found for:    Open Studies | "Tachycardia"
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Rank Status Study
21 Recruiting Prospective Randomized Clinical Trial for Effect of Stellate Ganglion Block in Medically Refractory Ventricular Tachycardia
Condition: Refractory Ventricular Tachycardia
Interventions: Drug: Antiarrhythmic drug;   Procedure: percutaneous stellate ganglion block (PSGB)
22 Recruiting Transdermal Vagal Stimulation for POTS
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Other: Stimulation;   Other: Placebo
23 Recruiting Modafinil and Cognitive Function in POTS
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Placebo;   Drug: Modafinil;   Drug: Propranolol
24 Not yet recruiting As Low As Reasonable Achievable Fluoroscopy for SVT Ablation
Condition: Symptomatic Supraventricular Tachycardia
Interventions: Procedure: SVT ablation by ALARA protocol;   Procedure: SVT ablation by conventional protocol
25 Recruiting Phase I/II Study of EP-guided Noninvasive Cardiac Radioablation for Treatment of Ventricular Tachycardia
Conditions: Ventricular Tachycardia;   Cardiomyopathy;   Premature Ventricular Contractions
Intervention: Radiation: stereotactic body radiotherapy (SBRT)
26 Recruiting POTS Adrenergic Ab (CIHR Aims #1&2)
Condition: Postural Tachycardia Syndrome
Interventions: Drug: Phenylephrine;   Drug: Isoproterenol
27 Not yet recruiting Biomarkers in Risk Stratification of Sustainted Ventricular Tachycardia or Electrical Storm After Ablation
Conditions: Heart Failure;   Ventricular Tachycardia;   Ventricular Dysfunction
Intervention:
28 Recruiting Catheter Ablation for Nonsustained Ventricular Tachycardia in Patients With Ischemic Cardiomyopathy
Conditions: Ventricular Tachycardia;   Ischemic Cardiomyopathy;   Reduced LVEF
Interventions: Procedure: VT ablation;   Other: medication
29 Recruiting Northera Improves Postural Tachycardia Syndrome (POTS) and Postural Vasovagal Syncope (VVS)
Conditions: Postural Tachycardia Syndrome (POTS);   Vasovagal Syncope (VVS);   Fainting
Interventions: Drug: Northera (Droxidopa);   Drug: Placebo
30 Recruiting REnal SympathetiC Denervation to sUpprEss Tachyarrhythmias in ICD Recipients
Condition: Ventricular Tachycardia
Intervention: Device: Boston Scientific Vessix Renal Denervation System
31 Recruiting Does Timing of VT Ablation Affect Prognosis in Patients With an Implantable Cardioverter-defibrillator?
Condition: Ventricular Tachycardias
Interventions: Procedure: Immediate radiofrequency ablation of ventricular tachycardia;   Procedure: Radiofrequency ablation of ventricular tachycardia
32 Recruiting EnSite™ HD Grid Catheter AF/AT Mapping Study
Conditions: Non-paroxysmal Atrial Fibrillation;   Left Atrial Tachycardia
Intervention: Device: EnSite™ HD Grid Catheter mapping system
33 Not yet recruiting Calmodulin Gene Mutations in Patients With Ventricular Arrhythmia of Unknown Origin - A Screening Study
Condition: Ventricular Tachycardia
Intervention:
34 Recruiting Comparison of VT Ablation Outcomes Using Remote MAGNETIC Navigation Versus Manual Approach in a Low LVEF Population
Condition: Tachycardia, Ventricular
Interventions: Device: catheter ablation using magnetic navigation;   Device: catheter ablation using manual navigation
35 Recruiting Autoimmune Basis for Postural Tachycardia Syndrome
Conditions: Postural Orthostatic Tachycardia Syndrome;   Postural Tachycardia Syndrome;   Tachycardia;   Arrhythmias, Cardiac;   Autonomic Nervous System Diseases;   Orthostatic Intolerance;   Cardiovascular Diseases;   Primary Dysautonomias
Interventions: Drug: phenylephrine;   Drug: isoproterenol;   Radiation: 25 micro-Ci of radiation;   Procedure: Posture study with blood samples;   Procedure: 24-hour heart rhythm and blood pressure monitoring;   Procedure: Quantitative Axonal Sudomotor Reflex Testing;   Procedure: Autonomic function tests
36 Not yet recruiting Vagal Stimulation in POTS
Condition: Postural Tachycardia Syndrome
Interventions: Drug: placebo sugar pill;   Drug: Pyridostigmine Pill;   Drug: Galantamine Pill;   Device: Vagal stimulation;   Device: Sham vagal stimulation
37 Recruiting A Post-market Clinical Evaluation of St. Jude Medical™ MR Conditional ICD System on Patients Undergoing Magnetic Resonance Imaging
Conditions: ICD;   Tachycardia
Intervention: Radiation: Thoracic MRI Scan
38 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
39 Recruiting Acute Study to Collect Electrical Signals From the Heart Using a Special Lead
Conditions: Tachycardia;   Ventricular Arrhythmias
Intervention: Device: Defibrillation following induction of VT/VF
40 Recruiting Pan-Asia United States PrEvention of Sudden Cardiac Death Catheter Ablation Trial
Condition: Ventricular Tachycardia (VT)
Interventions: Device: Implantable Cardioverter Defibrillator (ICD);   Procedure: Catheter Ablation

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Study has passed its completion date and status has not been verified in more than two years.