ATI RN
Cardiovascular System Test Questions Questions
Question 1 of 5
Hydrostatic pressure is
Correct Answer: B
Rationale: Hydrostatic pressure (B) is fluid pressure against vessel walls. It’s higher at the arterial end (not A), decreases along the capillary (not zero at midpoint, C), so only B is correct.
Question 2 of 5
The force the heart must overcome to pump blood is known as
Correct Answer: B
Rationale: Afterload (B) is the resistance (arterial pressure) the heart overcomes to eject blood.
Question 3 of 5
Based on an understanding of nitroglycerin, the nurse administers it for which of the following reasons to a client with angina?
Correct Answer: D
Rationale: Nitroglycerin (D) dilates veins, reducing preload and oxygen demand, relieving angina. It doesn’t increase afterload (A), preload (B), or constrict arteries (C).
Question 4 of 5
The nurse is caring for a client taking atorvastatin (Lipitor). The client admits to consuming 6 to 12 beers daily. The nurse should monitor the client for what potentially serious adverse reaction to Lipitor?
Correct Answer: C
Rationale: Atorvastatin (C) with excessive alcohol risks hepatotoxicity due to liver metabolism strain. Others (A, B, D) are less significant.
Question 5 of 5
Oxygen is carried in the blood bonded to:
Correct Answer: A
Rationale: Oxygen is primarily transported in the blood bound to hemoglobin in red blood cells (about 98-99%). Bicarbonate ions carry CO₂, 'protein' is too vague, and carbonic acid is a CO₂ transport intermediate, not oxygen.