ATI RN
Cardiovascular System Assessment Questions Questions
Question 1 of 5
Closer to the heart, arteries would be expected to have a higher percentage of
Correct Answer: C
Rationale: Elastic arteries (e.g., aorta) near the heart have more elastic fibers (C) for stretch/recoil during systole. Endothelium (A) is a thin layer, smooth muscle (B) dominates in muscular arteries, collagen (D) supports.
Question 2 of 5
The influx of which ion accounts for the plateau phase?
Correct Answer: D
Rationale: Calcium (D) influx via L-type channels sustains the plateau phase in cardiac action potentials.
Question 3 of 5
The two tubes that eventually fuse to form the heart are referred to as the
Correct Answer: B
Rationale: Endocardial tubes (B) fuse to form the primitive heart tube in the embryo.
Question 4 of 5
Which of the following interventions should the nurse include in the plan of care for a client taking an ACE inhibitor?
Correct Answer: A
Rationale: ACE inhibitors (A) can cause first-dose hypotension, requiring BP monitoring for 2 hours. High doses (B), potassium supplements (C), and alternate dosing (D) are incorrect.
Question 5 of 5
A slow heart rate is known as:
Correct Answer: A
Rationale: Bradycardia refers to a slow heart rate, typically below 60 beats per minute in adults. Tachycardia is a fast heart rate (above 100 bpm), while 'hypocardia' and 'hypercardia' are not standard medical terms related to heart rate.