Long QT syndrome (patient information)
|
Long QT syndrome |
|
Long QT syndrome On the Web |
|---|
For the WikiDoc page for this topic, click here
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief:; Assistant Editor(s)-In-Chief:
Overview
Long QT syndrome is a condition resulting in an abnormality in the way electrical impulses are conducted within the heart. It can cause sudden cardiac arrhythmias in response to exercise or stress. Arrhythmias are abnormalities in the rhythm of the heartbeat. These arrhythmia's can be dangerous and fatal, but not everyone with long QT syndrome will have arrhythmias.
What are the symptoms of Long QT syndrome?
- Seizures - if the heart continues to beat abnormally, the brain can become deprived of oxygen, which can then cause seizures.
- Fainting - fainting or syncope is the most common symptom in persons with long QT syndrome. The fainting can occur spontaneously without warning, or in response to certain stressors such as emotional stress, exercise, excitement or loud noises. Often when people are about to faint, they may experience lightheadedness, heart palpitations, blurred vision or weakness.
- Sudden death - in some circumstances a fatal arrhytmia that is not quickly intervened on, may cause sudden death.
What causes Long QT syndrome?
Who is at highest risk?
Diagnosis
When to seek urgent medical care?
Treatment options
Lifestyle changes and medications can be used to help treat long QT syndrome. These are:
- Avoiding high intensity physical activity or stress.
- Including more potassium in the diet, with the help of a doctors supervision.
- Certain heart medications, such as beta blockers will prevent people from going into sudden cardiac arrest.
- Certain medical devices, such as an implantable cardiac difibrillator or a pacemaker can help to regulate the rhythm of the heart.
Where to find medical care for Long QT syndrome?
Directions to Hospitals Treating Condition
Prevention
What to expect (Outlook/Prognosis)?
People who are treated with lifestyle modifications and medications live longer than those who are not. For people who are not treated, half of them, mostly those with the inherited form of long QT syndrome, will die within 10 years.
Possible complications
Long QT syndrome can result in fatal heart arrhythmias and death.