Genetic and Rare Diseases Information Center (GARD)

Long QT syndrome
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Long QT syndrome is a disorder of the heart’s electrical activity that can cause sudden, uncontrollable, and irregular heartbeats (arrhythmia), which may lead to sudden death. Long QT syndrome can be detected by electrocardiogram (EKG). It can be caused by a variety of different gene mutations (changes). It can also be acquired (noninherited) and may be brought on by certain medicines and other medical conditions.[1]

References
  1. Long QT syndrome. National Heart Lung and Blood Institute. 2007 Available at: http://www.nhlbi.nih.gov/health/dci/Diseases/qt/qt_all.html. Accessed December 17, 2008.

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