A patient requires an immediate effect of a prescribed medication. Which parenteral route should a nurse choose for the fastest absorption?
Intradermal
Subcutaneous
Intramuscular (IM)
Intravenous (IV)
The Correct Answer is D
A. Intradermal: Intradermal injections are administered into the dermis and are primarily used for diagnostic purposes, such as allergy or tuberculosis testing. Absorption is slow due to limited vascularization.
B. Subcutaneous: Subcutaneous injections deliver medication into fatty tissue under the skin. Absorption is slower compared with IM or IV routes because blood flow in adipose tissue is limited, making it unsuitable for rapid effect.
C. Intramuscular (IM): IM injections allow faster absorption than subcutaneous or intradermal routes due to higher blood flow in muscles. However, onset is still slower than intravenous administration.
D. Intravenous (IV): IV administration delivers medication directly into the bloodstream, providing immediate systemic availability. This route ensures the fastest onset of action, making it ideal when an immediate effect is required.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Calculation:
Ordered Dose: 40 mg
Available Concentration: 10 mg/mL
- Set up dimensional analysis
Formula: Volume to administer = (Ordered Dose × Conversion Factor)
Conversion Factor = 1 mL ÷ 10 mg
- Perform the calculation
Volume to administer = 40 × (1 ÷ 10)
Volume to administer = 4 mL
Correct Answer is B
Explanation
A. 10 mL syringe: A 10 mL syringe is too large for a 1.5 mL intramuscular injection. Using a larger syringe reduces measurement accuracy and increases the risk of dosing errors.
B. 3 mL syringe: A 3 mL syringe is ideal for intramuscular injections ranging from 1 to 3 mL. It provides accurate measurement, allows safe administration, and is standard practice for most IM medications.
C. 1 mL syringe: A 1 mL syringe is too small for a 1.5 mL dose. Using it would require multiple injections, increasing patient discomfort and error risk.
D. 5 mL syringe: While a 5 mL syringe can hold the volume, it is larger than necessary. Using a smaller syringe like a 3 mL provides better accuracy and control for the 1.5 mL dose.
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