The dosage strength of a solution with a strength of 50% is
5 g of medication per 100 mL solution.
1g of medication per 50 ml. solution.
1:1,000.
50 g of medication per 100 mL solution.
The Correct Answer is D
A. 5 g of medication per 100 mL solution: This describes a 5% solution, not a 50% one. A 5% solution means there are 5 grams of drug in 100 mL of solution.
B. 1 g of medication per 50 mL solution: This reflects a 2% concentration (1 g in 50 mL = 2 g in 100 mL = 2%). It does not match 50% strength.
C. 1:1,000: A 1:1,000 ratio means 1 gram of medication in 1,000 mL of solution (or 0.1%), which is far more diluted than a 50% solution.
D. 50 g of medication per 100 mL solution: A 50% solution means there are 50 grams of solute per 100 mL of solution. This is the correct expression of a 50% concentration by weight/volume (w/v).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. topically: Topical administration involves applying medication to the skin surface, typically for local effects. "pr" (per rectum) does not refer to topical use.
B. transdermally: Transdermal delivery uses patches that release medication through the skin into the bloodstream over time. Phenergan® is not ordered in a transdermal form here, and "pr" does not support this route.
C. through the rectum: The abbreviation "pr" stands for per rectum, which means the medication should be administered into the rectum. This is the correct route for Phenergan® suppositories prescribed for nausea and vomiting.
D. through the vagina: Vaginal administration is typically indicated with terms like "pv" (per vagina). "pr" specifically refers to rectal administration.
Correct Answer is ["4"]
Explanation
1: This is a medication cup, which is not suitable for measuring a small volume like ¼ teaspoon with a high degree of accuracy. Its large capacity and wide rim make it prone to measurement errors for such a small dose. Additionally, its shape is inappropriate for instilling medication into an ear.
2: This is an oral syringe, which is a good device for accurately measuring small liquid volumes. However, its primary design is for oral administration. While it could be used for instillation, the dropper is more suitable for this order.
3: This is a medication dosing spoon or oral dispenser. While it has markings for fractions of a teaspoon, it is designed for oral administration. Its shape would make it difficult to precisely and safely instill medication into an ear, as the liquid would likely spill.
4: This device is a dropper, which is the most appropriate tool for this medication order. It has clear markings for a quarter-teaspoon, allowing for accurate measurement of the small dose. A dropper is also specifically designed for the ordered route of administration, "instilled into the right ear," enabling the precise and safe delivery of the medication.
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