7. Cardiac Cycle and Sounds Flashcards

1
Q

What is the range for ventricular volume?

A

120 to ~50

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2
Q

What do we call the sudden uptick in aortic pressure when the aortic valve closes?

A

The dicrotic notch

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3
Q

What on the EKG is happening as the dicrotic notch is happening?

A

The T wave is winding down

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4
Q

Where does the period of isovolumetric relaxation fall on the EKG?

A

Just after the T wave

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5
Q

Why does the aortic pressure drop a while after the ventricle contracts?

A

Because of peripheral runoff (blood entering the peripheral tissues)

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6
Q

Why does jugular pressure increase just after the P wave?

A

Because the atria contract and squeeze the jugular.

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7
Q

When is the peak in ventricular pressure relative to the EKG?

A

Just before the T wave

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