Information for patients with long-QT syndrome undergoing dental work.

Long QT Syndrome is a rare, inherited disorder of the heart’s conduction system.
The diagnosis is made when QT interval (a measurement on the ECG) is prolonged.
This can put individuals at increased risk of heart rhythm disturbance which can lead to palpitations, black outs or rarely sudden death.
Management of the condition focuses on:
• Lifestyle modifications eg. avoidance of strenuous sporting activity and medications which can prolong the QT interval
• Beta blocker therapy to regulate the heart rhythm
• Internal Cardioverter-Defibrillators (ICD) in certain high risk groups

At the time of dental treatment individuals are at potential increased risk of abnormalities so simple precautions are necessary to reduce this.
Patients with LQTS should still receive their dental care in their general dental practice but the following guidelines should be followed:

1. Inform your dentist you have Long QT syndrome
2. Take your Beta Blocker as normal on the day of your dental treatment
3. Discuss with your dentist that certain medications should be avoided because of your LQTS (includes adrenaline in local anaesthetic and certain medications for infection)
4. Inform your dentist if you have an ICD