Heart and Blood Conditions

Long QT Syndrome Treatment

The goal of treatment for long QT syndrome (LQTS) is to prevent your child’s heart from dangerous irregular and fast heartbeats (arrhythmias). Treatment does not cure LQTS.

Long QT Syndrome Treatment Options

LQTS can be treated with medicines, like beta-blockers. These slow the heart rate and decrease the chance of having dangerous heart rhythms and sudden cardiac arrest by blunting the heart’s reaction to adrenaline.

Some children with LQTS may need a pacemaker or a defibrillator. Read more about these devices and our Arrhythmia Program.

Your doctor may also want your child to avoid things that might trigger an arrhythmia. Common triggers include:

  • Strenuous exercise
  • Certain medicines
  • Conditions that can lower potassium (like diarrhea and vomiting)
  • Loud noises that might startle them during sleep

What triggers your child can be different from other children, so talk with your doctor about it.