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Supraventricular tachycardia
Supraventricular tachycardia
(
SVT
) is an
abnormal heart rhythm
arising from improper
electrical activity of the heart
. It is a type of
rapid heart rhythm
originating at or above the
atrioventricular node
. It can be contrasted with the potentially more dangerous
ventricular tachycardias
—rapid rhythms that originate
within
the
ventricular
tissue.
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