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NURS 370 Final Actual Questions and Correct Answers

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NURS 370 Final Actual Questions and Correct Answers

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NURS 370 Final Actual Questions and Correct Answers



Q1
What is stroke volume?
Answer: The volume that leaves the left ventricle per pump



Q2
When HR increases, Stroke volume (SV)
Answer: When heart rate increases, stroke volume tends to DECREASE due to the ventricles
pumping faster than
they can fillVice versa: A decreased heart rate allows for the ventricles to fill up more leading to an
increased stroke volume



Q3
S/S of Decreased Stroke Volume
Answer: Dizziness/Lightheaded CoolPalePoor/delayed cap refill



Q4
Fill in the blanks: CO = x
Answer: CO = HR x SV



Q5
What are the 3 components of SV
Answer: Preload Afterload Contractility



Q6
Define Preload
Answer: How much blood we have to ejectTh stretch of the ventricles



Q7
What conditions increase preload
Answer: Hypervolemia Heart failureRegurgitation of cardiac valves

, Q8
Define afterload
Answer: How much force needed to get blood out of the ventricles and in the vessels



Q9
Conditions that increase afterload
Answer: HTNVasoconstriction



Q10
Conditions that decrease afterload
Answer: Hypotension Vasodilation



Q11
Define contractility
Answer: Strength of the heart pumping muscle



Q12
What conditions impact heart contractility
Answer: Heart failureelectrolyte disturbances



Q13
What drug has an effect on one or more of the stroke volume components
Answer: Cardiac meds can affect one or more of the components: preload, afterload, contractility



Q14
SA node conducts at what speed
Answer: 60-100 bpm



Q15
Describe the conduction pathway of the heart
Answer: SA AVBundle of HIS Purkinje Fibers



Q16
T or F: If the SA node fails, the AV node takes over, and so on
Answer: True

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