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61 studies found for:    arrhythmia OR atrial fibrillation OR ventricular fibrillation OR tachycardia OR bradycardia | Open Studies | Exclude Unknown | NIH, U.S. Fed
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Rank Status Study
1 Recruiting Vein of Marshall Ethanol Infusion for Persistent Atrial Fibrillation
Conditions: Ventricular Tachycardia;   Atrial Fibrillation
Interventions: Drug: Ethanol;   Procedure: Ablation
2 Recruiting Substrate Versus Trigger Ablation for Paroxysmal Atrial Fibrillation
Condition: Atrial Fibrillation
Interventions: Procedure: FIRM Ablation;   Procedure: Conventional AF ablation with PVI
3 Recruiting MRI Assessment of Arrythmia Ablation Lesions
Conditions: Ventricular Tachycardia;   Cardiac Arrhythmia
Intervention: Other: MRI scan
4 Not yet recruiting New Formulations of Propafenone to Treat Atrial Fibrillation
Condition: Atrial Fibrillation
Interventions: Drug: (R)-propafenone;   Drug: (S)-Propafenone;   Drug: Placebo
5 Recruiting A Study of Pyridostigmine in Postural Tachycardia Syndrome
Condition: Postural Tachycardia Syndrome
Interventions: Drug: pyridostigmine;   Drug: Placebo
6 Recruiting Influence of Sleep Apnea on Risk of Atrial Fibrillation
Conditions: Sleep Apnea;   Atrial Fibrillation
Intervention: Other: Continuous Positive Airway Pressure
7 Recruiting Reducing Orthostatic Intolerance With Oral Rehydration in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients
Conditions: Chronic Fatigue Syndrome;   Myalgic Encephalomyelitis;   Systemic Exertion Intolerance Disease (SEID);   Postural Tachycardia Syndrome (POTS);   Neurally Mediated Syncope (NMS)
Interventions: Drug: Normal Saline;   Dietary Supplement: Oral Rehydration Solution
8 Recruiting Pathophysiology of Orthostatic Intolerance
Conditions: Tachycardia;   Postural Orthostatic Tachycardia Syndrome
Interventions: Radiation: DAXOR;   Procedure: QSweat;   Drug: Intrinsic Heart Rate
9 Recruiting Identification of Genomic Predictors of Adverse Events After Cardiac Surgery
Conditions: Heart; Dysfunction Postoperative, Cardiac Surgery;   Genetic Predisposition to Disease;   Atrial Fibrillation;   Myocardial Infarction;   Heart Failure
Intervention:
10 Recruiting Clinical Autonomic Disorders: A Training Protocol
Conditions: Chronic Fatigue Syndrome;   Pseudopheochromocytoma;   Healthy Volunteers;   Neurocardiogenic Syncope;   Postural Tachycardia Syndrome
Intervention:
11 Recruiting Prospective Observational Study of the ICD in Sudden Cardiac Death Prevention
Conditions: Heart Failure, Congestive;   Death, Sudden, Cardiac;   Arrhythmia;   Cardiomyopathies
Intervention:
12 Recruiting Pharmacogenetics of Warfarin in Caribbean Hispanics
Conditions: Atrial Fibrillation;   Deep Vein Thrombosis;   Cardiac Valvular Insufficiency;   Coagulopathies;   Pulmonary Embolism
Interventions: Genetic: Genotype-guided;   Other: Standard-of-Care
13 Recruiting Risk of Oxygen During Cardiac Surgery Trial
Condition: Cardiac Surgery
Intervention: Drug: Oxygen
14 Recruiting A Registry to Determine the Clinical and Genetic Risk Factors for Torsade De Pointes
Conditions: Long qt Syndrome;   Torsade de Pointes
Intervention:
15 Recruiting Exercise in Genetic Cardiovascular Conditions
Conditions: Hypertrophic Cardiomyopathy;   Long QT Syndrome
Intervention:
16 Recruiting Open-Labeled PK-PD Studies of Metoprolol ER
Condition: Blood Pressure
Interventions: Drug: Toprol XL;   Device: SmartPill Capsule;   Procedure: Exercise Treadmill;   Procedure: 24 hour holter monitor;   Other: 24-hour pharmacokinetic parameters;   Drug: Wockhardt metoprolol;   Drug: Activas metoprolol
17 Recruiting Plerixafor After Radiation Therapy and Temozolomide in Treating Patients With Newly Diagnosed High Grade Glioma
Conditions: Adult Ependymoblastoma;   Adult Giant Cell Glioblastoma;   Adult Glioblastoma;   Adult Gliosarcoma;   Adult Medulloblastoma;   Adult Mixed Glioma;   Adult Oligodendroglial Tumors;   Adult Pineoblastoma;   Adult Supratentorial Primitive Neuroectodermal Tumor (PNET)
Interventions: Radiation: radiation therapy;   Drug: temozolomide;   Drug: plerixafor;   Other: laboratory biomarker analysis;   Other: pharmacological study
18 Recruiting HCMR - Novel Markers of Prognosis in Hypertrophic Cardiomyopathy
Condition: Hypertrophic Cardiomyopathy
Intervention: Other: None - this is an observational study
19 Recruiting Genetics of QT Prolongation With Antiarrhythmics
Conditions: Long QT Syndrome;   Drug Toxicity
Intervention: Drug: Dofetilide and/or sotalol
20 Recruiting Evaluating the Benefit of Concurrent Tricuspid Valve Repair During Mitral Surgery
Conditions: Mild Tricuspid Regurgitation;   Moderate Tricuspid Regurgitation;   Tricuspid Regurgitation
Interventions: Procedure: TV Annuloplasty;   Procedure: MVS Alone

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Indicates status has not been verified in more than two years