ATI RN
Questions About the Cardiovascular System Questions
Question 1 of 4
Which of the following organs is not essential for life?
Correct Answer: D
Rationale: The spleen, while important for immune function and blood filtering, is not essential for life; people can survive without it (e.g., after splenectomy). The liver, pancreas, and heart are vital for metabolism, digestion, and circulation.
Question 2 of 4
Which factor is most closely associated with successful smoking cessation?
Correct Answer: C
Rationale: Successful smoking cessation is strongly tied to planning for relapses (e.g., identifying triggers and coping strategies), as it addresses the chronic nature of addiction. Support groups (A) help but are less critical, and B and D ignore the need for comprehensive approaches.
Question 3 of 4
A 70-year-old patient with cardiovascular disease attends group classes on disease process, medications, exercise, nutrition, and stress management. To promote optimal and effective learning, the cardiac-vascular nurse uses which teaching strategy?
Correct Answer: B
Rationale: Customizing teaching to the learner’s interests enhances engagement and relevance, optimizing learning for an older adult. A overwhelms, C is a tool not a strategy, and D contradicts primacy effect (key info first).
Question 4 of 4
The 'lub-dub' sound of the heart is produced by:
Correct Answer: C
Rationale: The 'lub-dub' sound corresponds to the closing of heart valves during the cardiac cycle. The 'lub' is the closing of the atrioventricular valves (mitral and tricuspid) at the start of systole, preventing backflow into the atria. The 'dub' is the closing of the semilunar valves (aortic and pulmonary) at the end of systole. Choices A and B are partial truths, but the full sequence involves both valve types. Choices C and D refer to muscle actions, not the sound’s direct cause.