Long QT Syndrome history and symptoms

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Overview

More than 2 fainting episodes within 2 years should trigger an EKG evaluation for Long QT Syndrome.

History and Symptoms

History

Patients with long QT syndrome may have a positive history of:

• Prior history of cardiac arrest
• Family history of syncope, seizures or cardiac arrest
• First-degree relatives with known long QT syndrome
• Using certain medications causing prolonged QT interval

Common Symptoms

• [Lightheadedness]]
• Palpitations
• Syncope or presyncope

Less common symptoms

• Blurred vision or weakness
• Seizures
• Sudden death

References