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Pronunciation: sim-path'i-ko-to'ne-a

Definition: A condition in which there is increased tonus of the sympathetic system and a marked tendency to vascular spasm and high blood pressure; opposed to vagotonia.

[sympathico- + G. tonos, tone, tension]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.