A prescription requires administering 2 teaspoons of medication. What is the correct metric equivalent?
20 mL
10 mL
15 mL
5 mL
The Correct Answer is B
A. 20 mL: Twenty milliliters is equivalent to 4 teaspoons. Administering this amount would double the prescribed dose and could lead to medication overdose and adverse effects.
B. 10 mL: One teaspoon equals 5 mL, so 2 teaspoons equal 10 mL. This conversion is standard in clinical practice and ensures accurate and safe medication dosing.
C. 15 mL: Fifteen milliliters is equivalent to 3 teaspoons. Using this amount would exceed the prescribed dose and increase the risk of medication-related harm.
D. 5 mL: Five milliliters equals 1 teaspoon. Administering this amount would provide only half of the prescribed dose, leading to underdosing and reduced therapeutic effect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Ordered Dose: 500 mg
Available Concentration: 250 mg per 5 mL
- Calculate the volume to administer using ratio and proportion
Volume to administer = (Ordered Dose ÷ Concentration) × Volume of Concentration
Volume to administer = (500 ÷ 250) × 5
Volume to administer = 2 × 5
Volume to administer = 10 mL
Correct Answer is B
Explanation
A. 27 gauge, 3/8 inch: This needle is too small in both gauge and length for an intramuscular injection in an adult. It is more appropriate for intradermal or subcutaneous injections and may not reach muscle tissue.
B. 22 gauge, 1.5 inch: A 22-gauge, 1.5-inch needle is commonly used for intramuscular injections in adults, especially in larger muscle groups such as the deltoid or ventrogluteal muscles. The gauge allows medication to flow easily while the length ensures proper muscle penetration.
C. 18 gauge, 1.5 inch: An 18-gauge needle is too large for routine intramuscular injections and is typically reserved for drawing up medications or administering blood products. Using this size could cause unnecessary tissue trauma and discomfort.
D. 25 gauge, 5/8 inch: This needle is generally used for subcutaneous injections and is too short to reliably reach muscle tissue in most adults. Inadequate depth may result in improper medication absorption.
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