Long QT Syndrome
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Long QT Syndrome Overview

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Learn About Long QT Syndrome

What is the definition of Long QT Syndrome?
Long QT syndrome is a heart disorder characterized by rapid, irregular heartbeats caused by a signaling abnormality in the heart’s electrical system. The QT interval refers to the time it takes for the heart’s electrical system to make the ventricles of the heart contract and then recover. In long QT syndrome, there is a delay in the time it takes for the electrical system to recover between each heartbeat. This delay can cause rapid, irregular, and life-threatening ventricular contractions, also known as torsade de pointes.
What are the symptoms of Long QT Syndrome?
Some individuals with long QT syndrome may not have any symptoms. Symptoms of long QT syndrome include fainting, also called syncope, which may or may not be preceded by blurred vision, lightheadedness, palpitations, and weakness. In individuals with long QT syndrome, fainting may occur in response to being startled, excited, angry, or scared. Symptoms of long QT syndrome may also occur during sleep or when awakened suddenly. In some individuals, long QT syndrome may cause seizures. If the heart does not return to its normal rhythm after a long QT episode, cardiac arrest and sudden death may occur.
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What are the different types of Long QT Syndrome?

Common conditions include: Long QT Syndrome 1, Long QT Syndrome 2, Long QT Syndrome 3, Long QT Syndrome 5

What are the current treatments for Long QT Syndrome?
Treatment for long QT syndrome depends on the type and location. Treatment for long QT syndrome is focused on preventing irregular heartbeats, cardiac arrest, and sudden death. Treatment for long QT syndrome may include lifestyle changes, such as avoiding intense exercise; medications, such as beta blockers and mexiletine; surgery, such as left cardiac sympathetic denervation or cardioverter-defibrillator implantation.
Who are the top Long QT Syndrome Local Doctors?
Elite in Long QT Syndrome
Dr. Dan M. Roden
Cardiology
Elite in Long QT Syndrome
Dr. Dan M. Roden
Cardiology
Referral required

Vanderbilt University

3601 21st Ave S, 
Nashville, TN 
615-322-3000
Languages Spoken:
English, Czech, French
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Accepting New Patients
Offers Telehealth

Dan Roden is a Cardiologist practicing medicine in Nashville, Tennessee. Dr. Roden is rated as an Elite provider by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Long QT Syndrome 5, Long QT Syndrome, Brugada Syndrome, Cardiac Ablation, and Percutaneous Coronary Intervention (PCI). Dr. Roden is currently accepting new patients.

Elite in Long QT Syndrome
Elite in Long QT Syndrome
Referral may be required
Tokyo, JP 

Wataru Shimizu practices practicing medicine in Tokyo, Japan. Mr. Shimizu is rated as an Elite expert by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 47 other conditions, according to our data. His clinical expertise encompasses Ventricular Fibrillation, Long QT Syndrome, Brugada Syndrome, Cardiac Ablation, and Percutaneous Coronary Intervention (PCI).

 
 
 
 
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Elite in Long QT Syndrome
Elite in Long QT Syndrome
Referral may be required
St. Paul's Hospital, 
Vancouver, BC, CA 

Andrew Krahn practices practicing medicine in Vancouver, Canada. Mr. Krahn is rated as an Elite expert by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Cardiac Arrest, Ventricular Fibrillation, Long QT Syndrome, Cardiac Ablation, and Heart Bypass Surgery.

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What are the latest Long QT Syndrome Clinical Trials?
A Phase 2/3, Two-part, Dose-ranging, Adaptive Study to Evaluate Efficacy and Safety of THRV-1268 in Participants Diagnosed With Long QT Syndrome Type 2 (LQTS 2)
A Phase 2/3, Two-part, Dose-ranging, Adaptive Study to Evaluate Efficacy and Safety of THRV-1268 in Participants Diagnosed With Long QT Syndrome Type 2 (LQTS 2)
Enrollment Status: Recruiting
Publish Date: July 22, 2026
Intervention Type: Drug, Other
Study Phase: Phase 2/Phase 3

Summary: 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). The study will also learn about the safety and tolerability of THRV-1268 at different doses. The main questions this study aims to answer are: Does THRV-1268 reduce the QTc interval (a measure of the heart's elect...

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Efficient Deep Learning Approaches for the Rapid and Interpretable Detection of Deadly Arrhythmias in ECG Data
Efficient Deep Learning Approaches for the Rapid and Interpretable Detection of Deadly Arrhythmias in ECG Data
Enrollment Status: Recruiting
Publish Date: June 12, 2026

Summary: ELDORA is a non-interventional observational data-science study aiming to develop and validate clinical-grade artificial intelligence tools applied to electrocardiogram (ECG) data. The project will standardize heterogeneous ECGs, create the ECGInsight harmonized database, and train interpretable models for life-threatening arrhythmia risk prediction, especially Torsades-de-Pointes/long QT syndrome...

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What are some Advocacy Organizations?
simons-heart

Simon’s Heart is a nonprofit organization dedicated to raising awareness about, and preventing deaths from, conditions that cause sudden cardiac arrest in children.