Clinical trials: QT Prolongation
Cardiovascular Diseases, Heart Diseases
Long QT Syndrome-Population Genetics and Cardiac Studies
To investigate the clinical, genetic and cardiologic aspects of the Long QT Syndrome, a predominantly hereditary disease with episodic malignant arrhythmias and sudden death, and a demonstrated gene linkage in a large pedigree.
- Conditions
- Cardiovascular Diseases, Heart Diseases, Ventricular Arrhythmia, Long QT Syndrome
- Trial name
- LQTS (NCT00005176)
- Where
- United States
- Volunteers
- 2,125 people
- Sponsor
- University of Rochester
Ventricular Tachycardia, Ventricular Fibrillation
Pediatric Lead Extractability and Survival Evaluation (PLEASE)
This is a randomized, prospective clinical trial comparing 2 different types of implantable cardioverter defibrillator (ICD) leads in children and patients with congenital heart disease.
- Conditions
- Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy, Long QT Syndrome
- Trial name
- NCT00335036
- Testing
- ICD lead implant, Thin leads
- Where
- United States
- Volunteers
- 748 people
- Sponsor
- Charles Berul
Spinal Muscular Atrophy, Fragile X Syndrome
Early Check: Expanded Screening in Newborns
Early Check provides voluntary screening of newborns for a selected panel of conditions. The study has three main objectives: 1) develop and implement an approach to identify affected infants, 2) address the impact on infants and…
- Conditions
- Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy
- Trial name
- NCT03655223
- Testing
- Confirmatory Testing
- Where
- United States
- Volunteers
- 30,000 people, healthy volunteers welcome
- Sponsor
- RTI International
Long QT Syndrome
LQT and Smartphone/Smartwatch
Congenital long QT syndrome (LQTS) is a rare genetic disorder characterized by prolongation of the corrected QT interval (QTc) on the electrocardiogram.
- Trial name
- SMART-QT (NCT04728100)
- Testing
- LQT
- Where
- France
- Volunteers
- 111 people
- Sponsor
- Hospices Civils de Lyon
Long QT Syndrome
The Canadian National Long QT Syndrome Registry
The NLQTS Research Network team aims to build a Canadian collaboration of dedicated investigators that will create a new paradigm in the modern investigation of patients with LQTS and in the description of a new disease modifier.
- Trial name
- LQTSREG (NCT02425189)
- Where
- Canada
- Volunteers
- 1,051 people
- Sponsor
- Andrew Krahn
Voriconazole Induced QT Interval Prolongation
Voriconazole-Induced QT Interval Prolongation: A Prospective Study
The antifungal voriconazole is effective for the treatment of invasive fungal infections in immunocompromised patients. A serious adverse reaction is QT interval prolongation, which may precede life-threatening arrhythmias, such…
- Trial name
- NCT04502355
- Where
- Israel
- Volunteers
- 60 people
- Sponsor
- Rabin Medical Center
Breath-holding Spell
Breath-holding Spells and Its Management Study
The goal of this prospective population-based study is to evaluate the new disease description and management guidelines for breath-holding spells in children (Hellström Schmidt et al, Acta Paediatrica 2024) below the age of 5…
- Trial name
- BAM (NCT06628271)
- Testing
- Guidelines
- Where
- 12 sites in Sweden
- Volunteers
- 120 people
- Sponsor
- Region Skane
Cardiomyopathy, Hypertrophic, Cardiomyopathy, Dilated
National Network for Cardiovascular Genomics: Advancing Cardiovascular Healthcare for Hereditary Diseases in Brazil's Unified Health System Through a Multicenter Registry
The goal of this observational study is to develop a registry of Brazilian patients with hereditary cardiovascular diseases, combining clinical and genomic data.
- Conditions
- Cardiomyopathy, Hypertrophic, Cardiomyopathy, Dilated, Cardiomyopathy Restrictive, Arrhythmogenic Right Ventricular Dysplasia
- Trial name
- RENOMICA-Hcor (NCT06546137)
- Testing
- whole genome sequencing
- Where
- 27 sites in Brazil
- Volunteers
- 1,211 people
- Sponsor
- Hospital do Coracao
Long QT Syndrome
Measurement of the Electromechanical Window to Improve the Diagnosis of Congenital Long QT Syndrome
The goal of this research is to prospectively evaluate the performance of the electromechanical window according to a phonographic method, as a mean of diagnosis of long QT syndrome, and to compare its performance with routine…
- Trial name
- FEMQT (NCT04328376)
- Testing
- ECG coupled to phonocardiography
- Where
- 4 sites in France
- Volunteers
- 224 people
- Sponsor
- University Hospital, Bordeaux
Azithromycin Adverse Reaction, Covid19
The Effect of Azithromycin Use on Conduction System of Heart in COVID-19 Positive Children
Azithromycin (AZ) is used in the pediatric group in COVID-19 diseas. It has been reported to cause prolongation in the QT interval in adult age group.
- Conditions
- Azithromycin Adverse Reaction, Covid19, Long QT Syndrome
- Trial name
- NCT04699097
- Testing
- Azithromycin
- Where
- Turkey (Türkiye)
- Volunteers
- 105 people
- Sponsor
- Kayseri City Hospital
Andersen-Tawil Syndrome, Andersen Syndrome
Characteristics of Andersen-Tawil Syndrome
Andersen-Tawil Syndrome (ATS) is a rare, genetic disorder that causes episodes of muscle weakness, potentially life-threatening changes in heart rhythm, and developmental abnormalities.
- Trial name
- NCT00521794
- Where
- 7 sites in United States, Canada and 2 more
- Volunteers
- 28 people
- Sponsor
- University of Rochester
Congenital Disorders
Low-dose Epinephrine Infusion Tests in Adolescent and Pediatric Patients
Long QT syndrome (LQTS)is a cardiac disorder that may lead to ventricular arrythmias and culminate in syncope and/or possible death.
- Trial name
- LEAP (NCT00548886)
- Testing
- Epinephrine
- Where
- United States
- Volunteers
- 7 people
- Sponsor
- Emory University
Qt Interval, Variation in, Adverse Effect of Selective Serotonin Reuptake Inhibitors
Effect of Antenatal SSRI Exposure on the QT Interval of Neonates
Selective Serotonin Reuptake Inhibitors (SSRIs) are a group of antidepressants that suppress the re-absorption of a chemical called Serotonin in the brain, and improve mood.
- Trial name
- SSRIs (NCT02492347)
- Testing
- Electrocardiogram
- Where
- United Kingdom
- Volunteers
- 88 people
- Sponsor
- University of Southampton
Long QT Syndrome (LQTS) 2
Evaluation of the Efficacy and Safety of THRV-1268 in Participants With Long QT Syndrome Type 2 (LQTS2) and Type 3 (LQTS3)
The goal of this clinical trial is to learn whether the study drug THRV-1268 can safely and effectively shorten the QT interval in people diagnosed with Long QT Syndrome Type 2 (LQTS 2) and Long QT Syndrome Type 3 (LQTS 3).
- Trial name
- Wave II (NCT07277582)
- Testing
- baseline lead-in, THRV-1268
- Where
- 9 sites in United States
- Volunteers
- 84 people
- Sponsor
- Thryv Therapeutics, Inc.
Long QT Syndrome
Prevalence of Congenital Long QT Syndrome and Acquired QT Prolongation in a Hospital Cohort
The Long QT syndrome is associated with potentially life-threatening cardiac arrhythmias as ventricular tachycardia (Torsade de pointes) as well as ventricular fibrillation, and might lead to syncope as well as sudden cardiac…
- Trial name
- NCT03544918
- Where
- Norway
- Volunteers
- 1,536 people
- Sponsor
- Sykehuset Telemark
Prostate Cancer, Robotic Surgery
Effect of Dexmedetomidine on Heart-rate Corrected QT(QTc) Interval Prolongation During Robotic-assisted Laparoscopic Radical Prostatectomy -Randomized Blind Clinical Trial-
Sympathetic activity could be increased during robot-assisted laparoscopic radical prostatectomy, which is performed in a steep trendelenburg position under CO2 pneumoperitoneum.
- Trial name
- NCT02536014
- Testing
- Dexmedetomidine, Saline
- Where
- South Korea
- Volunteers
- 50 people
- Sponsor
- Yonsei University
Inherited Cardiac Arrhythmias, Long QT Syndrome
Long Term Monitoring for Risk of Sudden Death
Risk prediction in in inherited heart rhythm conditions that may cause sudden cardiac arrest or death is difficult. Sometimes the risks may be low but the loss of life in an otherwise healthy young individual is catastrophic.
- Conditions
- Inherited Cardiac Arrhythmias, Long QT Syndrome, Arrhythmogenic Right Ventricular Cardiomyopathy, Brugada Syndrome
- Trial name
- NCT04124237
- Where
- Canada
- Volunteers
- 1,051 people
- Sponsor
- University of British Columbia
Long QT Syndrome
KCNQ1 Cascade Screening
The objectives of the protocol are to: (1) evaluate the uptake of cascade screening and preventative therapies after the implementation of a simplified screening process and (2) assess proband and family member perspectives about…
- Trial name
- NCT03783975
- Testing
- Simplified Cascade Screening
- Where
- United States
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Long QT Syndrome, Hypertrophic Cardiomyopathy
Molecular Genetic Screening and Identification of Congenital Arrhythmogenic Diseases
The aim of this study is the identification of familial congenital arrhythmogenic disorders and their clinical follow-up.
- Conditions
- Long QT Syndrome, Hypertrophic Cardiomyopathy, Arrhythmogenic Right Ventricular Dysplasia
- Trial name
- NCT00221832
- Where
- Germany
- Volunteers
- 300 people
- Sponsor
- Heidelberg University
QT Prolongation
QT Interval in Athletes
QT interval prolongation occurs in athletes and causes concerns, as it may indicate the life-threatening long QT syndrome (LQTS).
- Trial name
- ERAS (NCT05759260)
- Testing
- Observation
- Where
- Italy
- Volunteers
- 869 people
- Sponsor
- Istituto Auxologico Italiano