56. A prescription reads: Triamcinolone 0.1% cream Apply to trunk b.i.d. p.r.n. Disp. 1 lb How much cream should the patient receive?
Answer: C
The patient should receive 454 g of Triamcinolone 0.1% cream.
The prescription indicates a dispensation of 1 lb of cream, which is equivalent to 454 grams. Therefore, the patient will receive 454 g of Triamcinolone 0.1% cream.
A) 240 mg
This option is incorrect because 240 mg is significantly less than the amount prescribed. One pound is equal to approximately 454,000 mg, which is far greater than 240 mg.
B) 30 oz
This option is incorrect as well. While 30 ounces is a larger volume, it does not equate to the amount specified in the prescription. In fact, 1 lb is approximately 16 ounces, making 30 ounces more than double the prescribed quantity.
C) 454 g
This option is correct because it accurately reflects the conversion of 1 lb into grams. The prescription specifies a dispensation of 1 lb, which is exactly 454 grams, aligning perfectly with the required dosage.
D) 2200 mL
This option is incorrect. The volume of 2200 mL significantly exceeds the prescribed amount, as it corresponds to an unrealistic quantity of cream when compared to the 1 lb specified in the prescription.
Conclusion
The correct answer is 454 g, which is the direct conversion of the prescribed 1 lb of cream. All other options either understate or overstate the quantity, demonstrating a misunderstanding of the weight-to-volume relationship in this context. Thus, 454 g is definitively the accurate amount the patient should receive.