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hypotension
(hi″po-ten´shәn)
diminished tension; lowered blood pressure. A consistently low blood pressure (systolic pressure less than 100 mm of mercury) usually is no cause for concern and may even be associated with long life. However, extremely
low blood pressure may be a sign of a serious condition such as shock, massive hemorrhage, hypovolemia, or severe dehydration from nausea and vomiting. adj., hypoten´sive., adj.
orthostatic hypotension
, postural hypotension
a fall in blood pressure when a person goes from lying down or sitting to standing, with dizziness, blurred vision, and often
fainting; it can be acquired or idiopathic and either transient or chronic. Occasionally this symptom is part of a disorder
of the central nervous system such as the Shy-Drager syndrome.
supine hypotension
supine hypotension syndrome.
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