Long QT syndrome -
| a unique form of ventricular
tachycardia (VT). While most VT is seen in patients with underlying
heart disease, the VT of long QT syndrome tends to be seen in young
patients with anatomically normal hearts. Their ECGs are
characterized by a long QT interval, sometimes seen only during
exercise. The long QT interval reflects electrical abnormalities in
their cardiac cells; these electrical abnormalities predispose them to
VT.
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