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CCM > Hemodynamics > Flashcards

Hemodynamics Flashcards

1
Q

Right Atrium Pressure

A

2-6

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2
Q

Right Ventricle Pressure

A

15-25

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3
Q

Left Atrium Pressure

A

8-12

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4
Q

Left Ventricle Pressure

A

110-140

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5
Q

Pulmonary Artery Pressure

A

15-25 systolic

8-15 diastolic

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6
Q

Aorta Pressure

A

100-130 systolic

60-90 diastolic

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7
Q

Is right pressures higher or lower than the left

A

lower

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8
Q

what is cardiac output

A

amt of blood pumped by the heart per min.

SVxHR=Cardiac Output

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9
Q

what is pre-load

A

stretch, amount of volume returned to the heart

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10
Q

what is after-load

A

resistance the cardiac muscle overcomes to eject blood from the heart

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11
Q

what is contractility

A

force of ventricular contraction

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12
Q

what is ejection fraction

A

how much blood is being ejected from ventricles after each beat

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13
Q

normal ejection fraction

A

60-70%

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14
Q

what will increase cardiac output

A 
Increased HR (exercise, fight or flight)
Digoxin
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15
Q

what will reduce cardiac output

A

beta blockers

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16
Q

reasons for increased preload on right side

A

rt ventricle cardiomyopathy
sepsis
pulmonary retention
hypovolemia

17
Q

what is hypovolemia

A

decrease in circulating blood in general

18
Q

reason for increased preload on left side

A

cardiac tamponade

19
Q

what is a cardiac tamponade

A

pressure around the heart from fluid(blood)

20
Q

what can increase after-load

A

HTN

21
Q

what can decrease after-load

A

ace-inhibitors
dilation
sepsis
nitroglycerin

22
Q

what is systemic vascular resistance

A

force overcome by left ventricle upon contraction

23
Q

what is the indirect measure of the left ventricular afterload

A

arterial blood pressure

24
Q

what is pulmonary vascular resistance

A

resistance the right ventricle must overcome to eject blood

25
Q

what increases contractility

A

Digoxin

Dobutamine

26
Q

what decreases contractility

A

Beta Blockers
Ischemia
cardiomyopathy (abnormal heart muscle)

27
Q

formula for measuring arterial BP

A

CO x SVR

28
Q

what does Digoxin do

A

improves contractility - needs extra oxygen to pump

29
Q

how much O2 is being used by the muscle is presented as

A

SvO2

30
Q

what increases svr

A

compensatory mechanisms for homeostasis

CCM (13 decks)

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