To request an appointment, contact the UPMC Heart and Vascular Institute:
LQTS is a type of arrhythmia that can lead to an abnormally fast heartbeat.
This fast heartbeat can cause:
Sometimes, both genetics and other factors combined can lead to LQTS.
Some people are more likely to get the condition than others.
This includes people who:
LQTS can lead to fainting spells, seizures, or, rarely, sudden cardiac arrest.
The heart rhythm changes from LQTS often correct on their own — but can be deadly when they don't.
Treatment for LQTS helps prevent complications.
The Center for Inherited Heart Disease at UPMC:
Not everyone with LQTS has symptoms.
When they do have symptoms, the most common are:
If your doctor suspects you have LQTS, they'll ask you about your symptoms, medical history, and family history.
They'll also do a physical exam and may order tests, such as:
Because LQTS is an inherited disorder, your doctor may also suggest genetic testing.
Before the test, a genetic counselor will talk to you about the risks and benefits of DNA testing. They'll also tell you about any limits in translating the results.
If you carry a gene change for LQTS, there's a risk that you may pass it along to your children. Doctors may suggest that your parents, siblings, and children also have the test.
Your care team can talk with family members about their LQTS risks and DNA testing.
The goal of treatment for LQTS is to avoid sudden cardiac arrest, fainting spells, and fatal heart rhythms.
Your doctor will plan your treatment based on how severe your LQTS symptoms are and your risk for life-threatening problems.
Your doctor may:
Even with treatment, you may not have a normal QT interval on an EKG.