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Flashcards in vasculature Deck (11):
1

resistance vessels

regulate BP and blood flow

2

systemic perfusion pressure

difference between MAP and CVP

3

transmural pressure

inner pressure minus outer pressure, pressure that distends the atria or ventricle, if pressure in atria is 0 and intrapleural pressure is -4mmH, transmural is 4. With inspiration pressure in atria drops to -2 and intrapelural to -8 so no intramural pressure is 6

4

monroe kelly doctrine

cranium fixed volume so CPP and ICP must balance

5

valsalver ratio

shortest RR in phase 2 (fastest HR): longest RR in phase 4 (slowest HR): >1.5

6

square wave response

in valsalver get no increased HR in phase 2 and BP remains high. get no decreased HR in phase 4 and BP stays low

7

mean systemic pressure

if asystole with no circulatory reflexes its the pressure ur left with that promotes venous return. When RAP so high that venous return ceases RAP = MSP

8

windkessel

aorta potential energy in stretched walls in systole converted to kinetic energy in diasatole to maintaine constant flow

9

calculation of blood volume

70ml/kg, 80-100ml/kg in newborn

10

sum of local organ and tissue flow

cardiac output

11

main blood reseviours

lungs, liver, skin. splanic and limbs less so