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PCCN Review – Cardiac Exam Questions and Answers

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PCCN Review – Cardiac Exam Questions and Answers Calculate the cardiac output for a pt with a HR of 70 and a SV of 65 ml. - Answer-HR X SV=CO 70 X 65= 4550 4.6 L/min Calculate the cardiac output for a pt with a HR of 70 and a SV of 65 ml. HR X SV=CO - Answer-HR X SV=CO 70 X 65= 4550 4.6 L...

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  • October 15, 2024
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PCCN Review – Cardiac Exam Questions and Answers


Calculate the cardiac output for a pt with a HR of 70 and a SV of 65 ml. - Answer✔✔-HR X

SV=CO


70 X 65= 4550


4.6 L/min


Calculate the cardiac output for a pt with a HR of 70 and a SV of 65 ml.


HR X SV=CO - Answer✔✔-HR X SV=CO


70 X 65= 4550


4.6 L/min


What % of the cardiac cycle is provided by the atrial kick?


• 15%


• 20%


• 30%


• 35% - Answer✔✔-20%




Atrial kick is a term that represents the amount of the total CO that is supplied via atrial

contraction.


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If the pt has a condition or dysrhythmia that impairs or eliminates the atrial contraction, the pt

may be compromised.


Atrial Kick - Answer✔✔-Atrial kick is a term that represents the amount of the total CO that is

supplied via atrial contraction.


A normal value for an EF would be?


• 65%


• 40%


• 30%


• 25% - Answer✔✔-65%




The EF should be more than 50%. It represents the amount of blood ejected from the left

ventricle compared to the total amount available, expressed as a %. An EF of 35% or less

indicates a problem with contractility, outflow or filling.




EXA: If the ventricle contains 90ml of blood and 50mls are ejected, the amount would be

expressed as a %, in this case 55%.


A 67 year old male is admitted with chest pain after collapsing at home. He is arguing with his

wife that he should not be admitted because he "just over did it" while working in the world.



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Lee's wife states to you that his chest pain is more frequent, severe and prolonged than before.

You should anticipate what diagnosis?


• Exertional angina


• Unstable angina


• Variant angina


• Stable angina - Answer✔✔-UNSTABLE ANGINA




The change in quality, frequency, and duration indicates UNSTABLE ANGINA and may indicate

that the pt is at increased risk for an MI. This pt should be closely monitored for EKG changes

and rhythm disturbances. Pt/ family teaching should begin on how to identify an MI and basic

CPR.


Stroke Volume is comprised of which of the following factors?


• Blood volume, viscosity, impedance


• Cardiac output, HR, compliance


• Contractility, preload, afterload


• Compliance, impedance, HR - Answer✔✔-Contractility, preload and afterload


A reflex tachycardia caused by the stretch of the right atrial receptors is known as the ____


• Herring-Sines law


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• Renin-angiotensin system


• Starling's law


• Bainbridge reflex - Answer✔✔-BAINBRIDGE REFLEX




It is believed that this reflex exists to speed up the HR if the right side becomes overloaded,

thereby helping equalize pressures on both sides


Diastole comprises what & of the cardiac cycle?


•½


• 2/3


•¼


• 1/3 - Answer✔✔-2/3




Some people that the heart is virtually static during diastole.


During this period, the cardiac vessels and chambers fill—a process that takes up 2/3s of the

time necessary to complete the cardiac cycle


What is the MAP (mean arterial pressure) for pt:


BP 120/70


HR 80 - Answer✔✔-MAP=2(DBP) + (SBP)/3

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