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orthostatic hypotension

noun
  1. Medicine/Medical. a fall in blood pressure associated with an upright position, usually occurring as a result of standing still for a long time or rising from a prolonged stay in bed and often causing faintness, dizziness, and vision disturbances.
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Origin of orthostatic hypotension

First recorded in 1900–05
Also called postural hypotension.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

orthostatic hypotension in Medicine

orthostatic hypotension

n.
  1. A form of low blood pressure precipitated by moving from a lying or sitting position to standing up straight.postural hypotension
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.