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57 studies found for:    "Romano-Ward syndrome" OR "Long QT Syndrome"
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Rank Status Study
21 Recruiting Exercise in Genetic Cardiovascular Conditions
Conditions: Hypertrophic Cardiomyopathy;   Long QT Syndrome
Intervention:
22 Completed Long QT Syndrome-Population Genetics and Cardiac Studies
Conditions: Cardiovascular Diseases;   Heart Diseases;   Ventricular Arrhythmia;   Long QT Syndrome
Intervention:
23 Recruiting Hydroxyzine and Risk of Prolongation of QT Interval
Conditions: Hydroxyzine;   Long QT Syndrome
Intervention:
24 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
25 Completed Study Evaluating the Effects of Multiple Oral Doses of ERB-041 on Cardiac Repolarization in Healthy Subjects
Conditions: Healthy;   Long QT Syndrome
Intervention: Drug: ERB-041
26 Completed Risk of QT-prolongation and Torsade de Pointes in Patients Treated With Acute Medication in a University Hospital
Conditions: Delirium;   QT-prolongation
Intervention: Drug: Haloperidol, azi/clari/erythromycin, levo/moxifloxacin, co-trimoxazole, vori/keto/flu/itraconazole, methadone, tacrolimus, sunitinib
27 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
28 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
29 Completed Effects Rapid Atrial Pacing Has on the Electrocardiogram (ECG) in Patients With Dual Chamber Pacemakers
Condition: Prolonged QT Interval
Intervention:
30 Not yet recruiting QT-Prolongation in Lung Transplantation
Condition: Disorder Related to Lung Transplantation
Intervention: Device: Electrocardiography
31 Recruiting A Registry to Determine the Clinical and Genetic Risk Factors for Torsade De Pointes
Conditions: Long qt Syndrome;   Torsade de Pointes
Intervention:
32 Recruiting Worm Study: Modifier Genes in Sudden Cardiac Death
Conditions: Brugada Syndrome;   Long QT Syndrome 3
Interventions: Procedure: Dermal biopsy;   Behavioral: Gastro-intestinal questionnaire;   Genetic: Whole-exome sequencing
33 Completed Effect of Eleclazine on QT, Safety, and Tolerability in Adults With Long QT2 Syndrome
Condition: LQT2 Syndrome
Interventions: Drug: Eleclazine;   Drug: Placebo
34 Unknown  Race Difference Moxifloxacin-induced QT Prolongation Between Healthy Chinese and Caucasian Volunteers
Condition: Cardiac Toxicity
Intervention: Drug: Moxifloxacin
35 Completed Does Azithromycin Cause QT Prolongation in Hospitalized Patients With Severe Community Acquired Pneumonia?
Condition: Pneumonia
Intervention:
36 Completed Linkage Study of Long QT Syndrome In An Amish Kindred
Conditions: Heart Diseases;   Cardiovascular Diseases;   Tachycardia, Ventricular;   Ventricular Fibrillation;   Long QT Syndrome
Intervention:
37 Completed
Has Results
Ability of Late Sodium or Calcium Current Block to Balance the ECG Effects of Potassium Current Block
Conditions: Drug-induced QT Prolongation;   Pharmacokinetics;   Pharmacodynamics
Interventions: Drug: Dofetilide;   Drug: Mexiletine;   Drug: Lidocaine;   Drug: Moxifloxacin;   Drug: Diltiazem;   Drug: Placebo
38 Unknown  Molecular Genetic Screening and Identification of Congenital Arrhythmogenic Diseases
Conditions: Long QT Syndrome;   Hypertrophic Cardiomyopathy;   Arrhythmogenic Right Ventricular Dysplasia
Intervention:
39 Not yet recruiting Influence of Testosterone Administration on Drug-Induced QT Interval Prolongation and Torsades de Pointes
Condition: Prolonged QT Interval in EKG and Sudden Death
Interventions: Drug: Testosterone;   Drug: Progesterone;   Drug: Placebo;   Drug: Ibutilide
40 Completed
Has Results
Influence of Progesterone Administration on Drug-Induced QT Interval Lengthening
Condition: Prolonged QT Interval in EKG and Sudden Death
Interventions: Drug: Progesterone;   Drug: Placebo;   Drug: Ibutilide

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Study has passed its completion date and status has not been verified in more than two years.