33 studies found for:    "Romano-Ward syndrome" OR "Long QT Syndrome"
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Rank Status Study
1 Completed The Long QT Syndrome in Pregnancy
Condition: Long QT Syndrome
Intervention:
2 Completed Long QT Syndrome-Population Genetics and Cardiac Studies
Conditions: Cardiovascular Diseases;   Heart Diseases;   Ventricular Arrhythmia;   Long QT Syndrome
Intervention:
3 Recruiting Comparison Between Epinephrine and Exercise Test in QT Long Syndrome Patients
Condition: Long QT Syndrome Type 1 or 2
Interventions: Other: exercise test;   Other: Epinephrine test
4 Recruiting The Canadian National Long QT Syndrome Registry
Condition: Long QT Syndrome
Intervention:
5 Recruiting Multicenter Evaluation of Children and Young Adults With Genotype Positive Long QT Syndrome
Condition: Long QT Syndrome
Intervention:
6 Recruiting Long Term Prophylactic Therapy of Congenital Long QT Syndrome Type III (LQT3) With Ranolazine
Condition: Long QT Syndrome Type 3
Intervention: Drug: Ranolazine
7 Completed Linkage Study of Long QT Syndrome In An Amish Kindred
Conditions: Heart Diseases;   Cardiovascular Diseases;   Tachycardia, Ventricular;   Ventricular Fibrillation;   Long QT Syndrome
Intervention:
8 Completed ECG Signal Collection From Long QT Syndrome, Wide QRS Complexes, Heart Failure, and Cardiac Resynchronization Patients
Conditions: Long QT Syndrome;   Wide QRS Complexes;   Heart Failure;   Cardiac Resynchronisation
Intervention: Device: subcutaneous ICD
9 Enrolling by invitation Derivation of Human Induced Pluripotent Stem (iPS) Cells to Heritable Cardiac Arrhythmias
Conditions: Inherited Cardiac Arrythmias;   Long QT Syndrome (LQTS);   Brugada Syndrome (BrS);   Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT);   Early Repolarization Syndrome (ERS);   Arrhythmogenic Cardiomyopathy (AC, ARVD/C);   Hypertrophic Cardiomyopathy (HCM);   Dilated Cardiomyopathy (DCM);   Muscular Dystrophies (Duchenne, Becker, Myotonic Dystrophy);   Normal Control Subjects
Intervention:
10 Recruiting Long QT and Hearing Loss Registry
Conditions: Sensorineural Hearing Loss;   Long QT Syndrome
Intervention:
11 Suspended Fetal and Neonatal Magnetophysiology
Conditions: Fetal Arrhythmia;   Abnormality in Fetal Heart Rate or Rhythm;   Long QT Syndrome
Interventions: Device: magnetocardiography;   Device: postnatal ECG;   Device: fetal echocardiography
12 Completed Study of the Effect of GS-6615 in Subjects With LQT-3
Condition: Long QT Syndrome
Intervention: Drug: GS-6615
13 Unknown  Molecular Genetic Screening and Identification of Congenital Arrhythmogenic Diseases
Conditions: Long QT Syndrome;   Hypertrophic Cardiomyopathy;   Arrhythmogenic Right Ventricular Dysplasia
Intervention:
14 Completed Effect of Oral GS-6615 on Dofetilide-Induced QT Prolongation, Safety, and Tolerability in Healthy Adults
Condition: Long QT Syndrome
Interventions: Drug: GS-6615;   Drug: Placebo to match GS-6615;   Drug: Placebo to match dofetilide;   Drug: Dofetilide
15 Recruiting Pharmacokinetics of GS-6615 in Adults With Normal and Impaired Renal Function
Condition: Long QT Syndrome
Intervention: Drug: GS-6615
16 Recruiting Genetics of QT Prolongation With Antiarrhythmics
Conditions: Long QT Syndrome;   Drug Toxicity
Intervention: Drug: Dofetilide and/or sotalol
17 Recruiting Pharmacokinetics of GS-6615 in Adults With Normal and Impaired Hepatic Function
Condition: Long QT Syndrome
Intervention: Drug: GS-6615
18 Recruiting Efficacy Study of Sodium Channel Blocker in LQT3 Patients
Condition: Long QT Syndrome
Interventions: Drug: Placebo;   Drug: Ranolazine
19 Completed
Has Results
Effect of Beta-blocker Therapy on QTc Response in Exercise and Recovery in Normal Subjects
Conditions: Long QT Syndrome;   Cardiac Repolarization
Interventions: Drug: Placebo;   Drug: Propranolol LA
20 Terminated Pediatric Lead Extractability and Survival Evaluation (PLEASE)
Conditions: Ventricular Tachycardia;   Ventricular Fibrillation;   Cardiomyopathy;   Long QT Syndrome;   Congenital Heart Disease
Intervention: Device: ICD lead implant

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Indicates status has not been verified in more than two years