Understanding Long QT Syndrome (LQTS): Causes, Symptoms, and Management

What is it?

Long QT refers to a heart condition, congenital or acquired, that may cause arrhythmias and even sudden cardiac death. Q-T is an interval in the ECG which represents the time it takes the ventricle’s muscles contract and recover. Congenital long QT syndrome refers to some genetic mutations in the ion channels that are found in the myocytes. Due to these mutations, there is a delay in the heart’s electrical activity. Acquired long QT may be caused due to some medications. If someone in your family has LQT syndrome, it is important to get screened.

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Additional names

This group contains additional names:
- Long QT Syndrome

Signs & symptoms

Not all people with long QT have symptoms. Symptoms may include fainting, seizures and sudden death. Triggers for symptoms differ in different types of LQT but may include exercise, being startled and during sleep or while waking up.

Diagnosis

Diagnosis is based upon findings from medical history and physical examination. Further evaluation may include ECG and a stress test.

Treatment

Treatment includes medications such as beta blockers, avoiding triggers and an implantable cardioverter defibrillator (ICD).

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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Source of Information - We analyze big data of more than 23 million patients de-identified medical records from the following sources:

National Institution of Health ∙ World Health Organization ∙ University of Illinois hospital