Cardiac Lecture 1 Flashcards

1
Q

Normal MAP for this class

A

100mmHg (93 more accurate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Normal MAP calculation

A

MAP= Diastolic + 1/3 x (Sys - Dia)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Normal RA pressure

A

0 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Normal PA pressure (mPAP)

A

16 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Normal PA systolic pressure

A

25mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Normal PA diastolic pressure

A

8mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Normal LA pressure

A

2 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Compliance

A

ability to stretch

change in volume over change in pressure

Δ V / Δ P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If a high pressure is needed to pump a volume into a space, the compliance of that space would be ______

A

low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

If a low pressure is needed to pump a volume into a space, the compliance of that space would be ______

A

high

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Normal CO for this class

A

5 L/min

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Normal HR for this class

A

72bpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Normal stroke volume for this class

A

70mL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

gravity’s effect on BP

A

13.6mm = +1 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Reference point for BP with 0 effects of gravity

A

Isogravimetric point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where is the isogravimetric point located

A

In the tricuspid valve

17
Q

Venous system is a ______ compliance system

18
Q

Arterial system is a _______ compliance system

19
Q

Adding volume, but having little effect on pressure means the system is _____ compliance

20
Q

Adding volume and having large effect on pressure means the system is _____ compliance

21
Q

A ________ system readily accepts volume

A

high compliance

22
Q

Free water clearance (CH2O)

A

volume of water removed from body/time

23
Q

Relationship between free water clearance and ADH

A

Inverse
- More ADH → low free water clearance
- Low ADH → high free water clearance

24
Q

Pulmonary circuit ΔP

A

PAP - LAP → 14 mmHg

25
Pulse pressure (ΔP) in the aorta
120 - 80 = 40 mmHg
26
Pulse pressure calculation
Pulse pressure = systolic - diastolic
27
Pulse pressure in arteries vs veins
High in arteries and low in veins due to compliance
28
Why does the pulmonary circuit have low pulse pressure?
low vascular resistance
29
Relationship between pulse pressure and stroke volume
Direct - high SV increases pulse pressure and low SV decreases pulse pressure
30
What are the venous vascular pressures at the umbilicus, knee, and base of foot?
20 mmHg @ umbilicus, 40 mmHg @ knee, 90 mmHg @ base of foot
31
What are the venous vascular pressures in the cranial sinuses?
-10 mmHg
32
Define distensibility
Aka expandability, similar to compliance but includes original volume of the container; determines how much volume the container can accept - small original volume = higher distensibility
33
normal SVR
800 - 1600
34
How much blood is in the venous vs arterial circulation?
700 mL of blood in arterial circulation 2500 mL of blood in venous system
35
On a pressure vs volume graph, the slope of the line is an estimate of ______
compliance