ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 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 2 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.
Question 3 of 5
The SA node discharges at 0.00 seconds, when will the action potential normally arrive at the epicardial surface at the base of the left ventricle?
Correct Answer: A
Rationale: The action potential reaches the epicardial base of the left ventricle in about 0.22 seconds via Purkinje fibers.
Question 4 of 5
Which type of lipoproteins acts as a reservoir of apolipoproteins for the other lipoproteins?
Correct Answer: D
Rationale: HDL serves as a reservoir, donating apolipoproteins to other lipoproteins.
Question 5 of 5
Which of the following is an indication of infective endocarditis?
Correct Answer: D
Rationale: All listed signs—splinter hemorrhages, petechiae, and Osler's nodes—are classic for infective endocarditis.