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Cardiac Cycle Flashcards

1
Q

Isovolumetric ventricular contraction:

Aortic Valve

A

Closed

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2
Q

Isovolumetric ventricular contraction:

Mitral valve

A

Closed

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3
Q

Isovolumetric ventricular contraction:

LV pressure

A

Increases

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4
Q

Isovolumetric ventricular contraction:

LV volume

A

Constant

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5
Q

What cardiac event causes the S1 heart sound?

A

Mitral valve closure

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6
Q

What cardiac event marks the beginning of isovolumetric contraction?

A

Mitral valve closure

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7
Q

Ventricular ejection:

Aortic valve

A

Open

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8
Q

Ventricular ejection:

Mitral valve

A

Closed

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9
Q

Ventricular ejection:

Ventricular volume

A

Decreasing (Stroke volume)

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10
Q

Isovolumetric relaxation:

Aortic valve

A

Closed

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11
Q

Isovolumetric relaxation:

Mitral valve

A

Closed

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12
Q

What cardiac event is responsible for the S2 heart sound?

A

Aortic valve closing

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13
Q

Isovolumetric relaxation:

LV pressure

A

Decreases

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14
Q

Isovolumetric relaxation:

LV volume

A

Constant

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15
Q

What does the dicrotic notch seen on the arterial pressure waveform signify?

A

Closure of the aortic valve causes some retrograde flow from the aorta towards the aortic valve

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16
Q

What is lusitropy?

A

Myocardial relaxation

17
Q

Does lusitropy require energy?

A

Yes; ATP is required to pump Ca++ back into the sarcoplasmic reticulum

18
Q

Ventricular filling:

Mitral valve

19
Q

Ventricular filling:

Aortic valve

20
Q

Ventricular filling:

LV pressure

21
Q

Ventricular filling:

LV volume

A

Increasing

22
Q

Atrial systole:

Aortic valve

23
Q

Atrial systole:

Mitral valve

24
Q

What two points are associated with diastole?

25
Q

What two points are associated with systole?

26
Q

Isovolumetric contraction

27
Q

Ventricular ejection

28
Q

Isovolumetric relaxation

29
Q

Ventricular filling

30
Q

Aortic valve closes

31
Q

Mitral valve closes

32
Q

Mitral valve opens

33
Q

Aortic valve opens

34
Q

Identify the etiology for the change in the pressure volume loop.

A

Increased preload

35
Q

Identify the etiology for the change in the pressure volume loop.

A

Increased contractility

36
Q

Identify the etiology for the change in the pressure volume loop.

A

Increased afterload

37
Q

Identify the etiology for the change in the pressure volume loop.

A

Decreased preload

38
Q

Identify the etiology for the change in the pressure volume loop.

A

Decreased contractility

39
Q

Identify the etiology for the change in the pressure volume loop.

A

Decreased afterload

Cardiac (4 decks)

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