124 studies found for:    Open Studies | "Tachycardia"
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21 Recruiting A Study of Pyridostigmine in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: pyridostigmine;   Drug: Placebo
22 Recruiting 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
23 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
24 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
25 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
26 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
27 Not yet recruiting Substrate Targeted Ablation Using the Cool Flex™ Irrigated Catheter Ablation System for the Reduction of Ventricular Tachycardia
Condition: Monomorphic Ventricular Tachycardia
Intervention: Device: Cardiac catheter ablation with ICD
28 Recruiting Effect of Medical Treatment and Prognosis of Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Drug: Propranolol;   Drug: Bisoprolol;   Drug: Propranolol+pyridostigmine;   Drug: Bisoprolol+pyridostgmine
29 Recruiting Peripheral Dopamine in Postural Tachycardia Syndrome
Conditions: Postural Tachycardia Syndrome;   Orthostatic Intolerance
Interventions: Drug: Carbidopa;   Drug: Placebo
30 Unknown  The Renin-Aldosterone Axis in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Angiotensin II
31 Recruiting Safety and Efficacy of Paramedic Treatment of Regular Supraventricular Tachycardia
Condition: Supraventricular Tachycardia
Interventions: Other: Paramedic;   Other: Standard care
32 Not yet recruiting Safety and Efficacy Aspects of a Standardized Stepwise Anatomical Approach for AVNRT Ablation
Condition: Re-entrant Atrioventricular Node Tachycardia
Intervention: Procedure: Coronary sinus / left-sided slow pathway ablation
33 Recruiting Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Intervention: Device: Blood Pressure and Blood Flow
34 Recruiting Ultra-high Density Mapping With Multielectrode Catheter vs Conventional Point by Point Mapping for Ventricular Tachycardia Substrate Ablation
Condition: Ventricular Tachycardia
Interventions: Device: Ablation guided by conventional mapping.;   Device: Ablation guided by ultra-high density mapping with multielectrode catheter.
35 Recruiting Adrenocorticotropic Hormone Stimulation in Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Tachycardia Syndrome
Intervention: Drug: Cosyntropin administration
36 Unknown  Using Non-Fluoroscopic Imaging Devices to Decrease Radiation Exposure During Ablation of Supraventricular Tachycardia
Condition: Supraventricular Tachycardia
Intervention: Device: Intracardiac echocardiography and 3D navigational system
37 Recruiting Assessment of Antibodies and Inflammatory Markers in Postural Tachycardia Syndrome
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Other: History;   Other: Physical;   Other: blood draw;   Behavioral: Questionnaires
38 Recruiting Circulating Biomarkers and Ventricular Tachyarrhythmia
Conditions: Cardiomyopathy;   Ventricular Tachycardia;   Ventricular Fibrillation
Intervention:
39 Recruiting Iron Sucrose in Adolescents With Iron Deficiency and Postural Orthostatic Tachycardia Syndrome (POTS)
Condition: Postural Orthostatic Tachycardia Syndrome
Interventions: Drug: Iron infusion;   Drug: Normal saline infusion
40 Recruiting Management and Detection of Atrial Tachyarrhythmias in Patients Implanted With BIOTRONIK DX Systems
Conditions: Atrial Fibrillation;   Tachycardia;   ICD Therapy;   Thromboembolic Events;   Heart Failure
Intervention:

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Indicates status has not been verified in more than two years