Long QT syndrome
Long QT Syndrome
Long QT Syndrome (LQTS) is a rare inherited or acquired heart condition characterized by a prolonged QT interval on the ECG. The QT interval represents the time it takes for the heart's muscle cells to depolarize and then repolarize, or in simpler terms, to contract and then relax.
Pronunciation
The term is pronounced as "long cue-tee syndrome".
Etymology
The term "Long QT Syndrome" is derived from the distinctive prolonged QT interval seen on an ECG of affected individuals. The "QT" refers to the Q and T waves on the ECG, and "long" refers to the extended duration of this interval.
Symptoms
Symptoms of Long QT Syndrome may include fainting spells, seizures, or sudden death due to cardiac arrest. These events may be triggered by various factors such as exercise, stress, or startle, or they may occur without any apparent trigger.
Diagnosis
Diagnosis of Long QT Syndrome is typically based on the clinical history, family history, and the results of an ECG. Genetic testing may also be performed to identify the specific genetic mutation causing the condition.
Treatment
Treatment for Long QT Syndrome may include medications such as beta blockers, devices such as implantable cardioverter defibrillators, and lifestyle modifications to avoid triggers.
Related Terms
- QT interval
- Electrocardiogram
- Fainting
- Seizure
- Cardiac Arrest
- Beta Blocker
- Implantable Cardioverter Defibrillator
External links
- Medical encyclopedia article on Long QT syndrome
- Wikipedia's article - Long QT syndrome
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