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Pre-Excitation Syndrome
Definition 1
An electrocardiographic finding characterized by a premature activation of the whole or some part of the ventricle. The PR interval is usually shortened and delta waves are frequently present. (NCI Thesaurus/CDISC)
Definition 2
Conditions characterized by activation of the whole or some part of the ventricle by the atrial impulse earlier than would be expected if the impulse reached the ventricle by way of the normal specific conduction system only. (NLM, Medical Subject Headings)
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