113 studies found for:    Open Studies | "Tachycardia"
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Rank Status Study
1 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
2 Recruiting Ablation of Inappropriate Sinus Tachycardia
Condition: Inappropriate Sinus Tachycardia
Intervention: Procedure: electrophysiology study and radiofrequency ablation
3 Recruiting AV Nodal Reentrant Tachycardia Study
Condition: Tachycardia, Atrioventricular Nodal Reentry
Intervention: Procedure: Cardiac Invasive Electrophysiological Study
4 Recruiting Ivabradine Versus Beta-blockers in the Treatment of Inappropriate Sinus Tachycardia
Condition: Inappropriate Sinus Tachycardia
Interventions: Drug: Ivabradine;   Drug: Beta blocker
5 Unknown  Magnetically Navigated vs. Manually Guided Radiofrequency in Atrioventricular-Node-Reentry-Tachycardia
Conditions: Atrioventricular Nodal Reentry Tachycardia;   Radiofrequency Ablation
Intervention: Procedure: RF-ablation
6 Recruiting Aldosterone & Sodium Regulation in Postural Tachycardia Syndrome - Screening
Condition: Postural Tachycardia Syndrome
Interventions: Other: Autonomic Function Testing;   Other: Posture Study;   Procedure: Measurement of Total Blood Volume;   Other: Exercise Capacity Test
7 Recruiting Inducibility and Stability of Ventricular Tachycardia Inpatients Undergoing VT Ablation Under General Anesthesia
Condition: Ventricular Tachycardia
Interventions: Drug: Versed;   Drug: Fentanyl;   Drug: Propofol;   Drug: Sevoflurane
8 Recruiting Comparative Study Between Cryoablation and Radiofrequency Ablation in the Treatment of Supraventricular Tachycardia
Conditions: Supraventricular Tachycardia;   Atrioventricular Nodal Reentrant Tachycardia
Interventions: Procedure: cryoablation;   Procedure: radiofrequency ablation
9 Unknown  Dexmedetomidine Versus Adenosine: Electrophysiologic Effects and Therapeutic Use for Terminating Supraventricular Tachycardia
Condition: Supraventricular Tachycardia
Interventions: Drug: Dexmedetomidine;   Drug: Adenosine
10 Unknown  Fibrillatory Factor in Ventricular Tachycardia
Condition: Ventricular Tachycardia
Intervention: Procedure: Fibrillatory Factor calculation (FF)
11 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
12 Not yet recruiting Intramural Needle Ablation for Ablation of Recurrent Ventricular Tachycardia
Condition: Ventricular Tachycardia
Intervention: Device: Intramural Needle Ablation Catheter
13 Recruiting A Study of Pyridostigmine in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: pyridostigmine;   Drug: Placebo
14 Recruiting Dietary Salt in Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: Blood Volume;   Radiation: Total Blood Volume;   Procedure: Exercise Capacity Test - Bicycle;   Procedure: Posture Study
15 Unknown  Endo- and Epicardial vs. Endocardial Ablation of Ventricular Tachycardia in Patients With Cardiac Disease
Condition: Ventricular Tachycardia
Interventions: Procedure: Strategy 1 - endocardial ablation;   Procedure: Strategy 2 - endocardial and epicardial ablation
16 Recruiting Feasibility of Contact Force Catheter Mapping and Ablation in Epicardial and Endocardial Ventricular Tachycardias
Conditions: Ventricular Tachycardia;   Sudden Death;   Syncope;   Chest Pain
Intervention: Procedure: Catheter ablation
17 Not yet recruiting Biomarkers in Risk Stratification of Sustainted Ventricular Tachycardia or Electrical Storm After Ablation
Conditions: Heart Failure;   Ventricular Tachycardia;   Ventricular Dysfunction
Intervention:
18 Unknown  Anti-arrhythmic Medication v. MRI-Merge Ablation in the Treatment of Ventricular Tachycardia
Condition: Ventricular Tachycardia
Interventions: Procedure: MRI guided VT ablation;   Drug: Increased dose of amiodarone
19 Recruiting Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: Total Blood Volume;   Procedure: Exercise Capacity Test - Bicycle;   Procedure: Posture Study
20 Not yet recruiting Ventricular Tachycardia in Ischemic Cardiomyopathy; a Combined Endo-Epicardial Ablation Within the First Procedure Versus a Stepwise Approach
Conditions: Ventricular Tachycardia;   Ischemic Cardiomyopathy
Interventions: Other: combined endo/epicardial approach;   Other: stepwise approach

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