Week 4: Cardiovascular Management

Question 1

What is the equation for cardiac output?

KNOW THIS!!!

Answer 1

Cardiac Output = Heart Rate x Stroke Volume

• CO = HR x SV

Question 2

What comonents make up Stroke Volume?

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Answer 2

• Preload
• Contractility
• Afterload

Question 3

What is Afterload?

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Answer 3

Force / resistance the heart pumps against

Increased by:
* Hypertension
* Vasoconstriction

Question 4

What is Preload?

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Answer 4

Degree of stretch

volume of blood in ventricles at the end of diastole

Increased by:
* hypervolemia
* regurgitation of cardiac valves
* heart failure

Question 5

What is Capture?

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Answer 5

Heart’s response to pacemaker stimulation (when the heart contracts)

• There will be a P or QRS after the pacer spike