ATI LPN
Cardiovascular Nursing Questions Questions
Question 1 of 5
If the blood in the subclavian vein of the chest had a pressure of 25 mm Hg and the pressure of the superior vena cava that drains the subclavian had a pressure of 15 mm Hg, the right atrium would have a pressure of:
Correct Answer: C
Rationale: Blood flows from higher to lower pressure. The subclavian vein (25 mm Hg) drains into the superior vena cava (15 mm Hg), which then enters the right atrium. Thus, the right atrial pressure must be less than 15 mm Hg to allow flow, typically around 0-8 mm Hg.
Question 2 of 5
Regular exercise can positively influence several health risks. Identify two cardiovascular diseases and briefly explain their health risks on the human body. Explain how regular aerobic exercise might reduce these risks.
Correct Answer: D
Rationale: Regular exercise mitigates cardiovascular risks through enhanced heart functionality and metabolic improvements.
Question 3 of 5
Which septum divides the common atrium?
Correct Answer: C
Rationale: The septum primum initially divides the common atrium, followed by the septum secundum in atrial septation.
Question 4 of 5
A 55-year-old man has been diagnosed with Stokes-Adams syndrome. Two minutes after the syndrome starts active blockade of the cardiac impulse, which of the following is the pacemaker of the heart?
Correct Answer: C
Rationale: In Stokes-Adams syndrome, after complete block, Purkinje fibers take over as the pacemaker at a slower rate.
Question 5 of 5
Which of the following statements about cardiac muscle is most accurate?
Correct Answer: B
Rationale: Cardiac muscle contraction strength depends on extracellular calcium entering via L-type channels.