Orthostatic Hypotension Flashcards Preview

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Flashcards in Orthostatic Hypotension Deck (4)
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1

What is orthostatic hypotension.

Unsteadiness or LOC on standing from lying in those with inadequate vasomotor reflexes.

2

Who is at risk of developing orthostatic hypotension. (5)

The elderly.
Those with autonomic neuropathy.
Those on antihypertensive medication.
Overdiuresis.
Those with multisystem atrophy.

3

What is the aetiology of orthostatic hypotension.

A drop in systolic blood pressure of >20 or more on standing from a sitting or lying position.

4

What mechanism usually prevents orthostatic hypotension in normal individuals.

Reflex vasoconstriction prevents a drop in pressure.