ATI RN
Cardiovascular System Practice Questions Questions
Question 1 of 5
Vascular spasm, the first mechanism activated to decrease blood loss, is caused by
Correct Answer: D
Rationale: Vascular spasm (D) involves muscle damage (A), platelet factors (B), and pain reflexes (C).
Question 2 of 5
Blood islands are
Correct Answer: D
Rationale: Blood islands (D) in the yolk sac form early vessels and blood cells in the embryo.
Question 3 of 5
The cardiac cycle consists of a distinct relaxation and contraction phase. Which term is typically used to refer ventricular contraction while no blood is being ejected?
Correct Answer: D
Rationale: Isovolumic contraction (D) is early ventricular systole when valves are closed, and no blood is ejected.
Question 4 of 5
Which of the following is the priority for the nurse to assess before administering digoxin (Lanoxin)?
Correct Answer: A
Rationale: Auscultating the apical pulse (A) for 1 minute is the priority to detect bradycardia (<60 bpm), a sign of digoxin toxicity. Radial pulse (B) is less accurate, renal function (C) and potassium (D) are monitored but not the priority.
Question 5 of 5
The nurse is caring for a client on a heparin infusion when the client expresses concern over a progressively painful headache. Which of the following is the priority nursing action?
Correct Answer: C
Rationale: Notifying the physician (C) is the priority for a headache (possible heparin hypersensitivity or bleed). Stopping heparin (A) or giving protamine (B) awaits orders, morphine (D) is inappropriate.