NCLEX-RN
RN Pharmacological and Parenteral Therapies Quiz Questions
Question 1 of 5
A client with hypertension asks the nurse to explain how amlodipine besylate (Norvasc) lowers her blood pressure. The nurse gives which explanation to the client?
Correct Answer: A
Rationale: Amlodipine, a calcium channel blocker, prevents calcium entry into vascular smooth muscle, causing vasodilation and lowering blood pressure. It does not primarily affect heart rate (A is partially incorrect but closest), nor is it a diuretic (
B), ACE inhibitor (
C), or beta-blocker (
D).
Question 2 of 5
A client with asthma has orders for terbutaline. Which finding in the medical history would the nurse be most concerned about?
Correct Answer: D
Rationale: Terbutaline, a beta-2 agonist, can cause tachycardia and increased myocardial oxygen demand, posing a significant risk in coronary artery disease.
Question 3 of 5
Which instruction is correct for a client receiving lithium carbonate for bipolar disorder?
Correct Answer: C
Rationale: Ibuprofen can increase lithium levels, risking toxicity, and should be avoided. Breastfeeding is contraindicated, driving may be unsafe due to side effects, and fluid intake should be adequate.
Question 4 of 5
The nurse is preparing to administer a calcium channel blocker to a client with hypertension. The nurse understands that the mechanism of action of these drugs is to
Correct Answer: B
Rationale: Calcium channel blockers cause vasodilation, reducing total peripheral resistance and lowering blood pressure.
Question 5 of 5
The night nurse is preparing to pull night medications for a client. Levofloxacin is scheduled to be given at 0030. The nurse will give this medication at which time?
Correct Answer: D
Rationale: 0030 in 24-hour format is 12:30 a.m. (midnight plus 30 minutes), appropriate for a night shift medication.