ROCHESTER, Minn. — March 21, 2014 — Here are highlights from the March issue of Mayo Clinic Health Letter. You may cite this publication as often as you wish. Reprinting is allowed for a fee. Mayo Clinic Health Letter attribution is required. Include the following subscription information as your editorial policies permit: Visit www.HealthLetter.MayoClinic.com or call toll-free for subscription information, 1-800-333-9037, extension 9771. Full newsletter text: Mayo Clinic Health Letter March 2014 (for journalists only).
Long QT syndrome ― Electrical Miscues in the Heart ― Can Cause Fainting, Seizures
Long QT syndrome — when the electrical activity of the heart takes longer than it should to return to normal after a heartbeat — can lead to potentially dangerous heart rhythms. The March issue of Mayo Clinic Health Letter covers this condition and why it’s dangerous.
Long QT syndrome can cause fast, chaotic heartbeats that result in fainting, seizures or even sudden death. If long QT syndrome is suspected because of a fainting spell or family history, a doctor will likely suggest several tests, starting with an electrocardiogram (ECG).