Medical Definition of Preexcitation

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Preexcitation: In cardiology, the premature activation of part of the ventricle due to transmission of impulses along an accessory pathway that is not subject to the normal delay at the atrioventricular node.

Preexcitation is sometimes used as a synonym for the Wolff-Parkinson-White syndrome but preexcitation can also refer to other conditions such as the Lown-Ganong-Levine syndrome in which preexcitation occurs.

Reviewed on 9/7/2018

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