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57 studies found for:    "Romano-Ward syndrome" OR "Long QT Syndrome"

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1 Completed The Long QT Syndrome in Pregnancy
Condition: Long QT Syndrome
Intervention:
2 Recruiting Long QT Syndrome Screening in Newborns
Condition: Long QT Syndrome
Intervention: Device: QTScreen ECG Recorder
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 Active, not recruiting Effect of Eleclazine on Shortening of the QT Interval, Safety, and Tolerability in Adults With Long QT Syndrome Type 3
Condition: Long QT Syndrome Type 3
Interventions: Drug: Eleclazine;   Drug: Eleclazine placebo
5 Completed Long QT Syndrome-Population Genetics and Cardiac Studies
Conditions: Cardiovascular Diseases;   Heart Diseases;   Ventricular Arrhythmia;   Long QT Syndrome
Intervention:
6 Recruiting The Canadian National Long QT Syndrome Registry
Condition: Long QT Syndrome
Intervention:
7 Recruiting Prospective Identification of Long QT Syndrome in Fetal Life
Condition: Long QT Syndrome
Intervention:
8 Recruiting Multicenter Evaluation of Children and Young Adults With Genotype Positive Long QT Syndrome
Condition: Long QT Syndrome
Intervention:
9 Not yet recruiting Effect of Grapefruit on QT Interval in Healthy Volunteers and Patients With Congenital Long QT Syndrome
Condition: Long QT Syndrome
Interventions: Drug: Moxifloxacin;   Dietary Supplement: Grapefruit group
10 Recruiting Abnormal QT-Response to the Sudden Tachycardia Provoked by Standing in Individuals With Drug-induced Long QT Syndrome
Condition: Long QT Syndrome
Intervention: Device: tilt table
11 Recruiting Long QT and Hearing Loss Registry
Conditions: Sensorineural Hearing Loss;   Long QT Syndrome
Intervention:
12 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
13 Recruiting Long Term Prophylactic Therapy of Congenital Long QT Syndrome Type III (LQT3) With Ranolazine
Condition: Long QT Syndrome Type 3
Intervention: Drug: Ranolazine
14 Recruiting Exercise in Genetic Cardiovascular Conditions
Conditions: Hypertrophic Cardiomyopathy;   Long QT Syndrome
Intervention:
15 Recruiting Genetics of QT Prolongation With Antiarrhythmics
Conditions: Long QT Syndrome;   Drug Toxicity
Intervention: Drug: Dofetilide and/or sotalol
16 Completed Linkage Study of Long QT Syndrome In An Amish Kindred
Conditions: Heart Diseases;   Cardiovascular Diseases;   Tachycardia, Ventricular;   Ventricular Fibrillation;   Long QT Syndrome
Intervention:
17 Completed Study of the Effect of GS-6615 in Subjects With LQT-3
Condition: Long QT Syndrome
Intervention: Drug: GS-6615
18 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
19 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:
20 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
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† Indicates status has not been verified in more than two years