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18 Cards in this Set
- Front
- Back
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This can increase arterial blood pressure by 60mmHg in severe hemorrhage
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vasopressin (ADH)
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Dose dependent acitiviy
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Epinephrine
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what vasoconstricts damaged vessels
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endothelin
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powerful arteriolar vasodialators, they increase capillary permeability in inflamed tissues during allergic reactions
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bradykinin and histamine
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hyperoxia causes what
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vasoconstriction
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Why is hyperoxia a concern in patients suffering myocardial ischemia or myocardial infarction
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further vasoconstriction could make the event worse
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increased ECF concentration causes moderate what in most tissues
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vasodialation in most tissues form CO2
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increased ECF concentration causes what in brain
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significant vasodilation from increased CO2
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ALL blood vessels are innervated by sympathetic nerve fibers EXCEPT
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metarterioles and precapillary sphincters and capillaries
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Why is hyperoxia a concern in patients suffering myocardial ischemia or myocardial infarction
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further vasoconstriction could make the event worse
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increased ECF concentration causes moderate what in most tissues
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vasodialation in most tissues form CO2
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increased ECF concentration causes what in brain
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significant vasodilation from increased CO2
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ALL blood vessels are innervated by sympathetic nerve fibers EXCEPT
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metarterioles and precapillary sphincters and capillaries
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individual factors affecting CO
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age, body size(BSA), activity level, basal metabolic rate (BMR)
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Hemodynamic factors affecting CO
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Heart rate, myocardial contractility (effectiveness of pump function), preload, afterload
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this reflex CO for individuals based on body size and weight
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cardiac index (CI)
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GIVE the equation for CI
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CI = CO/BSA (m2)
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CI is primarily regulated by what
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the amount of body metabolic activity
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