postural syncope

postural syncope definition - medical

postural syncope

noun
A syncope that occurs upon assuming an upright position and is caused by inadequate blood flow to the brain resulting from failure of normal vasoconstrictive mechanisms.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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