Otterbein/Grant CRNA A&p Midterm Review - Cardiac

32 Questions | By Alainad3 | Updated: Mar 20, 2022 | Attempts: 158

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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.

Otterbein/Grant CRNA A&p Midterm Review - Cardiac

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