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CV physio Larmon - S.Horvath > hemodynamic measurements > Flashcards

hemodynamic measurements Flashcards

1
Q

velocity equals

A

flow/ area

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2
Q

vessel RESISTANCE is ____ proportional to radius to the 4th power

A

indirectly

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3
Q

FLOW is ___ proportional to radius to 4th

A

directyl

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4
Q

(bernoulli) stenosis - velocity ___ as diameter decreases

A

increases

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5
Q

normal SVR

A

700-1600

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6
Q

SVR is primarily determined by

A

changes in blood vessel diameters

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7
Q

when the volume of flow starts to decrease, arterial resistance ___. because the organ is saying I need ____!

A

decreases , dilates. volume… (doesnt constrict thinking its a BP problem)

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8
Q

CO =

A

hr x SV

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9
Q

CO is ____ related to area under the curve

A

inversely

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10
Q

so poor CO has ___ area under the curve

A

big

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11
Q

dicrotic notch represents

A

aortic valve closing

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12
Q

excessive dampening

A

underestimated systolic and overestimated diastolic

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13
Q

underdampening

A

overestimated systolic and underestimated distolic

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14
Q

CVP: a wave

A

RA contraction

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15
Q

C wave

A

elevation of cusp of tricuspid

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16
Q

V wave

A

back pressure wave from blood filling RA

17
Q

In a healthy individual with disease-free arteries, does systolic blood pressure increase or decrease in the leg relative to the proximal aorta

A

The systolic pressure rises and the diastolic pressure falls, therefore the pulse pressure increases, as the pressure pulse travels away from the aorta. Map should stay the same.

18
Q

What is damping in an arterial line tracing?

A

How quickly those vibrations - the harmonic oscillator, “bouncing” a couple of times before coming to rest

19
Q

what is ringing in A-line

A

exaggerated systolic component of an arterialwaveform. affects MAP

20
Q

once you see the dicrotic notch you are back in the

A

artery

21
Q

Patients with a left to right shunt can display this type of CO measurement:

A

high

22
Q

One of the most common problems with obtaining accurate cardiac output measurements is:

A

improper injectate administration

23
Q

wedge wave looks like

A

caterpillar

24
Q

when youre in the RA looks like

A

CVP

25
Q

when youre in the PA looks like

A

cvp

26
Q

when youre in RV looks like

A

staircase

27
Q

normal PVR

A

150-250

28
Q

RA

A

0-5

29
Q

RV

A

25/5

30
Q

PA

A

25/10

31
Q

LA

A

8-10

32
Q

LV

A

120/10

33
Q

Aortic pressure

A

120/80

CV physio Larmon - S.Horvath (8 decks)

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