Otterbein/Grant CRNA A&p Midterm Review - Cardiac

32 Questions | Total Attempts: 53

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CRNA Quizzes & Trivia

Questions and Answers
  • 1. 
    1. Heart rate/rhythm2. Preload3. Contractility4. Afterload These four factors affect ________. 
  • 2. 
    Coronary perfusion pressure = diastolic pressure minus LV tension or MAP - _______
  • 3. 
    Increasing blood pressure is the best way to increase blood flow to tissue.
    • A. 

      True

    • B. 

      False

  • 4. 
    (SP+(2DP))/3 calculates ____
  • 5. 
    Compliance is the ability to expand and take more capacity of volume with little change in pressure.
    • A. 

      True

    • B. 

      False

  • 6. 
    Which of the following is not a determinant of diastolic function
    • A. 

      Myocardial relaxation

    • B. 

      Passive ventricular filling

    • C. 

      Active ventricular filling

    • D. 

      Peripheral O2 use

  • 7. 
    Contractility is primarily determined by the amount of intracellular _______.
  • 8. 
    All of the following increase contractility except
    • A. 

      Sympathetic stimulation

    • B. 

      Parasympathetic inhibition

    • C. 

      Positive inotropic drugs

    • D. 

      Acidosis

  • 9. 
    Severe aortic stenosis is when the aortic valve area is less than 1 cm with a valvular gradient exceeding 40 mmHg.
    • A. 

      True

    • B. 

      False

  • 10. 
    With preload changes, EDV changes but ___ stays the same.
  • 11. 
    The Frank-Starling Law of the Heart states that the more the ventricle is filled during diastole, the greater the _____ ejected during systole.
  • 12. 
    Local anesthetics work in phase 0 of SA node to prevent spontaneous depolarization that occurs in phase ___ by preventing gated Na+ channels from opening.
  • 13. 
    Calcium channel blockers work on phase 2 of the ventricular action potential and phase ___ of the SA node action potential. 
  • 14. 
    The dicrotic notch on A-line pressure waveform represents retrograde blood flow back into the LV before aortic valve closure.
    • A. 

      True

    • B. 

      False

  • 15. 
    The O2 requirement for generating pressure is _____ than the O2 requirement for volume work.  In other words, elevating aortic pressure ______ O2 demand more than increasing stroke volume.
    • A. 

      Greater, increases

    • B. 

      Less, decreases

  • 16. 
    Myocardial oxygen consumption at rest is:
    • A. 

      2-4 mL/min/100g

    • B. 

      4-6 mL/min/100g

    • C. 

      6-8 mL/min/100g

    • D. 

      8-10 mL/min/100g

  • 17. 
    Coronary blood flow is dependent upon 3 of the following:
    • A. 

      Arterial pressure

    • B. 

      Diastolic time

    • C. 

      Small vessel resistance

    • D. 

      Preload

  • 18. 
    Adenosine, K+ ions, CO2, bradykinin, and prostaglandin are coronary vasodilator substances naturally released from the myocardium in response to decreased O2.
    • A. 

      True

    • B. 

      False

  • 19. 
    Valsalva maneuver elicits a ______ reflex near carotid arteries and aortic arch.  SNS is inhibited, PNS is activated: decreasing HR, decreasing contractility, causing vasodilation and hypotension.
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