2024 PN NCLEX Questions Nursing Practice Question
The client has an order for 0.45 mg of Diltiazem. The medication vial has a concentration of 3 mg/mL. How many mL of the drug should be administered?
Correct Answer: A
Rationale: To determine the appropriate volume of Diltiazem to administer, the dosage ordered (0.45 mg) must be compared to the concentration available (3 mg/mL). By dividing the ordered dose by the concentration, the calculation is as follows:
0.45 mg ÷ 3 mg/mL = 0.15 mL.
This shows that 0.15 mL is the required volume.
Option B (6.6 mL) significantly exceeds the needed dose, suggesting a misunderstanding of the conversion. Option C (1.5 mL) also overestimates the volume, while Option D (0.65 mL) is incorrect as it would provide a higher dose than prescribed. Thus, only 0.15 mL accurately meets the medication order.