ATI RN
NCLEX Practice Questions Cardiovascular System Questions
Question 1 of 5
Net filtration pressure is calculated by
Correct Answer: D
Rationale: Net filtration pressure = capillary hydrostatic pressure (pushing out) - blood colloid osmotic pressure (pulling in) (D). Other options (A, B, C) misrepresent Starling forces.
Question 2 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 3 of 5
The nurse is caring for a client with atrial fibrillation who is being treated with a variety of drugs. The nurse administers which of the following drugs in combination with quinidine that may result in an increased level of the drug?
Correct Answer: B
Rationale: Quinidine with digoxin (B) can double digoxin levels due to reduced clearance, risking toxicity. Others (A, C, D) don’t have this interaction.
Question 4 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 5 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.