Long QT Syndrome Symptoms, Doctors, Treatments, Advances & More

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.

Save information for later

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.

Not sure about your diagnosis?

Check Your Symptoms

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?

Dr. Michael J. Ackerman

Pediatric Cardiology

Elite

Highly rated in

conditions

Pediatric Cardiology

Mayo Clinic

Mayo Clinic - Minnesota

200 1st St Sw,

Rochester, MN

Michael Ackerman is a Pediatric Cardiologist in Rochester, Minnesota. Ackerman has been practicing medicine for over 28 years and is rated as an Elite expert by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 14 other conditions, according to our data. His top areas of expertise are Long QT Syndrome, Cardiomyopathy, Hypertrophic Cardiomyopathy (HCM), Heart Transplant, and Endoscopy. Ackerman is currently accepting new patients.

Dr. John R. Giudicessi

Cardiology

Elite

Highly rated in

conditions

Cardiology

Mayo Clinic

Mayo Clinic - Minnesota

200 1st St Sw,

Rochester, MN

John Giudicessi is a Cardiologist in Rochester, Minnesota. Giudicessi has been practicing medicine for over 9 years and is rated as an Elite expert by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 12 other conditions, according to our data. His top areas of expertise are Long QT Syndrome, Cardiac Arrest, Ventricular Fibrillation, and Long QT Syndrome 5. Giudicessi is currently accepting new patients.

Learn about our expert tiers

Learn more

Wataru Shimizu

Elite

Highly rated in

conditions

National Cardiovascular Center

Osaka, JP

Wataru Shimizu practices in Osaka, Japan. Shimizu is rated as an Elite expert by MediFind in the treatment of Long QT Syndrome. He is also highly rated in 53 other conditions, according to our data. His top areas of expertise are Long QT Syndrome, Ventricular Fibrillation, Brugada Syndrome, Cardiac Ablation, and Percutaneous Coronary Intervention (PCI).

View All Doctors

What are the latest Long QT Syndrome Clinical Trials?

Clinical ECG Study to Evaluate Electrophysiological Effects of Potential QT Prolonging Drugs With Novel ECG Biomarkers With Exposure-Response Analysis

Enrollment Status: Not yet recruiting

Publish Date: February 10, 2023

Intervention Type: Drug

Study Phase: Phase 1

Summary: Since 2005, FDA has required almost all new drugs be tested for their ability to prolong the QT interval through clinical studies. This requirement stems from the increased TdP risk QT interval prolongation can cause. However, the QT interval is an imperfect biomarker, as there are multiple drugs that can prolong the QT interval, without causing increased TdP occurrence. As such, numerous drugs la...

Match to trials

Find the right clinical trials for you in under a minute

Get started

Enrollment Status: Recruiting

Publish Date: February 01, 2023

Intervention Type: Other

Study Phase: Not Applicable

Summary: The QUALIMYORYTHM trial is a multicentre controlled study, aiming to assess health-related quality of life (HRQoL) of 107 children aged 6 to 18 years old with inherited cardiac arrhythmia (long QT syndrome, Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia, or arrhythmogenic right ventricular dysplasia), or inherited cardiomyopathies (hypertrophic, dilated, or restrictive car...

View All Clinical Trials

What are the Latest Advances for Long QT Syndrome?

The long-term efficacy of left cardiac sympathetic denervation in long QT syndrome.

Condition: Long QT Syndrome (LQTS)

Journal: Zhonghua xin xue guan bing za zhi

Treatment Used: Left Cardiac Sympathetic Denervation (LCSD)

Number of Patients: 28

Published: June 15, 2022

Propensity score-matching analysis comparing safety outcomes of appetite-stimulating medications in oncology patients.

Condition: Elderly Patients with Cancer/Weight Loss

Journal: Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

Treatment Used: Megestrol Acetate vs. Mirtazapine

Number of Patients: 350

Published: April 26, 2022

Tired of the same old research?

Check Latest Advances

Left Cardiac Sympathetic Denervation for Long QT Syndrome: 50 Years' Experience Provides Guidance for Management.

Condition: Long QT Syndrome

Journal: JACC. Clinical electrophysiology

Treatment Used: Left Cardiac Sympathetic Denervation

Number of Patients: 125

Published: March 25, 2022

View All Latest Advances

What are some Advocacy Organizations?

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