ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 of 5
The greatest resistance to blood flow occurs in the:
Correct Answer: B
Rationale: Arterioles provide the greatest resistance to blood flow due to their small diameter and muscular walls.
Question 2 of 5
A patient who is receiving dobutamine for the treatment of acute decompensated heart failure (ADHF) has the following nursing interventions included in the plan of care. Which action will be most appropriate for the registered nurse (RN) to delegate to an experienced licensed practical/vocational nurse (LPN/LVN)?
Correct Answer: C
Rationale: An experienced LPN/LVN would be able to monitor BP and heart rate and would know to report significant changes to the RN. Teaching patients, making adjustments to the drip rate for vasoactive drugs, and inserting a new peripheral IV catheter require RN level education and scope of practice.
Question 3 of 5
If the right coronary artery is blocked, which of the following will NOT be affected?
Correct Answer: D
Rationale: The left bundle branch is supplied by the left coronary artery, not the right, so it remains unaffected by a right coronary artery blockage.
Question 4 of 5
Which of the following are caused by acetylcholine?
Correct Answer: A
Rationale: Acetylcholine hyperpolarizes the SA node, slowing heart rate via increased potassium permeability.
Question 5 of 5
Which of the following does not dilate arterioles in the skin?
Correct Answer: D
Rationale: Vasopressin causes vasoconstriction, not dilation, unlike the others which dilate skin arterioles.