ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 of 5
The cardiovascular centers are located in which area of the brain?
Correct Answer: A
Rationale: The medulla oblongata (A) houses cardiovascular centers regulating heart rate and BP.
Question 2 of 5
The nurse is developing a medication schedule for a client receiving simvastatin (Zocor). To promote maximal effectiveness, the nurse should administer the drug
Correct Answer: C
Rationale: Simvastatin (C) is most effective at bedtime when cholesterol synthesis peaks. Meal timing (A, B) or morning (D) is less optimal.
Question 3 of 5
Which type of blood cell is involved in the clotting mechanism of blood?
Correct Answer: D
Rationale: Platelets (thrombocytes) are critical for blood clotting, aggregating at injury sites and releasing clotting factors. Neutrophils and eosinophils fight infection, and lymphocytes are immune cells, not directly involved in clotting.
Question 4 of 5
A client with atrial fibrillation is receiving digoxin (Lanoxin). It is MOST important for the nurse to?
Correct Answer: A
Rationale: Digoxin slows heart rate in atrial fibrillation; measuring the apical pulse before administration ensures it’s not below 60 bpm, preventing bradycardia toxicity. Other actions are useful but secondary to this safety priority.
Question 5 of 5
The nurse auscultates bibasilar inspiratory crackles in a newly admitted 68 year-old client with a diagnosis of congestive heart disease. Which of the following symptoms is MOST likely to occur?
Correct Answer: B
Rationale: Bibasilar crackles indicate pulmonary edema from left-sided congestive heart failure, often accompanied by peripheral edema due to fluid retention from right heart failure. Chest pain is less specific, and clubbing is linked to chronic hypoxia, not acute CHF.