Cardiovascular Phys - Red Book Flashcards Preview

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Flashcards in Cardiovascular Phys - Red Book Deck (56)
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1

Cardiac Mechanism is a 2 step pump. 1st step is what? 2nd step?

1st - atrial contraction
2nd - ventricular contraction

2

What is diastolic phase - atria fills _______ ventricle.

before

3

Ventricles are ____% full before atrial contraction.

80

4

What valves close and open during systolic phase?

Close - AV valves (tricuspid and mitral)
Open - Semilunar valves (aortic and pulmonary)

5

First heart sound? Stage? Event?

LUB
Systole
Closure of AV valves

6

Second heart sound? Stage? Event?

DUB
Diastole
Closure of semilunar valves

7

What is the electrophysiology conduction system?

SA node --> Intermodal Pathways --> AV node --> Bundle of His --> Purkinjie fibers --> Ventricles

8

ECG - P wave

Atrial depolarization

9

ECG - QRS wave

Ventricular depolarization

10

ECG - T wave

Ventricular repolarization

11

ECG - U wave

Papillary muscle repolarization

12

Hemodynamics - Poisulle's Law - Flow is proportional to what?

Driving pressure
Radios of tube (to 4th power)

13

Hemodynamics - Poisulle's Law - Flow is INVERSELY proportional to what?

tube length
viscosity

14

Flow = what?

Pressure/resistance

15

Effect of Vagal or ACh on heart?

Slows heart
Decreases contraction strength
Decreases velocity of conduction

16

Effect of Sympathetic or NE on heart?

Increases HR & force
Opens calcium channels

17

Hyperkalemia effect on heart?

Decreases HR

18

Hypokalemia effect on heart?

Increases HR (initially)
Decreases HR (eventually)

19

Hyper/Hypokalemia is what?

Abnormally high or low potassium in blood

20

Circulatory Pressure (mm Hg) in Right Atrium.

2 mm Hg

21

Circulatory Pressure (mm Hg) in Right Ventricle.

25 mm Hg

22

Circulatory Pressure (mm Hg) in Pulmonary Artery.

15 mm Hg

23

Circulatory Pressure (mm Hg) in Pulmonary Veins.

5 mm Hg

24

Circulatory Pressure (mm Hg) in Left Atrium.

5 mm Hg

25

Circulatory Pressure (mm Hg) in Left Ventricle.

120 mm Hg

26

Lymphatic system pressure?

-6 to +5 mm Hg

27

Lymphatic system flow per day?

4 L/day

28

Right lymphatic drain to?

Right lymphatic duct

29

Left lymphatic drain to?

Thoracic duct

30

Lymphatic drainage is located at the junction or what two veins?

Subclavian and internal jugular veins