ATI RN
Cardiovascular System Questions and Answers Quizlet Questions
Question 1 of 5
Slight vasodilation in an arteriole prompts a
Correct Answer: C
Rationale: Vasodilation widens the vessel, reducing resistance slightly (C) per Poiseuille’s law (resistance ∝ 1/radius⁴). Increase (A, B) occurs with constriction, huge decrease (D) overstates it.
Question 2 of 5
The first heart sound represents which portion of the cardiac cycle?
Correct Answer: C
Rationale: The first heart sound (S1) is the closing of AV valves (C) at the start of ventricular systole.
Question 3 of 5
After medication teaching on atenolol (Tenormin), which of the following statements by a client with diabetes mellitus demonstrates an understanding of the atenolol?
Correct Answer: B
Rationale: Atenolol (B), a beta blocker, masks tachycardia, an early hypoglycemia sign in diabetics. It doesn’t cause hyperglycemia (A), or affect insulin action (C, D).
Question 4 of 5
The nurse is instructing a client on clopidogrel bisulfate (Plavix). Which of the following statements by the client indicates an understanding of the effect of this drug?
Correct Answer: C
Rationale: Clopidogrel (C), an antiplatelet, increases bleeding risk, requiring caution with other bleeding drugs. Ambulation (A), hypotension (B), and constipation (D) are unrelated.
Question 5 of 5
The right subclavian artery supplies:
Correct Answer: B
Rationale: The right subclavian artery supplies oxygenated blood to the right upper limb (forelimb in some species) and parts of the chest and neck. It does not supply the stomach, kidney, or liver, and arteries carry oxygenated blood (except pulmonary).