Which statement correctly describes the safest method of parenteral medication?
An intramuscular injection should be administered using a 90-degree angle with a 1⁄2-inch-long needle.
Insulin is often administered intramuscularly and requires 1-3 mL of medication in each deltoid muscle.
Intradermal medications are injected near the bone and require a 2-inch-long needle for accurate administration
Subcutaneous injections can be administered at either a 45- or a 90-degree angle, based on the amount of adipose
The Correct Answer is D
A. "An intramuscular injection should be administered using a 90-degree angle with a 1⁄2-inch-long needle."
This statement is incorrect. Intramuscular injections typically require a needle length of at least 1 inch to reach the muscle tissue. The angle of administration is 90 degrees for intramuscular injections, but a 1/2-inch needle may not be long enough to reach the muscle layer in many patients.
B. "Insulin is often administered intramuscularly and requires 1-3 mL of medication in each deltoid muscle."
This statement is incorrect. Insulin is usually administered subcutaneously, not intramuscularly. Additionally, the deltoid muscle is not a common site for insulin injections.
C. "Intradermal medications are injected near the bone and require a 2-inch-long needle for accurate administration."
This statement is incorrect. Intradermal injections are administered just below the epidermis (skin layer) and do not require a long needle. They are typically given at a shallow angle, not near the bone, and a shorter needle is used (usually 1/4 to 1/2 inch).
D. "Subcutaneous injections can be administered at either a 45- or a 90-degree angle, based on the amount of adipose tissue."
This statement is correct. Subcutaneous injections are given into the fatty tissue just below the skin surface. The angle of administration can vary depending on the amount of adipose (fat) tissue. A 45-degree angle is often used for individuals with a small amount of adipose tissue, while a 90-degree angle is used for those with a larger amount of adipose tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To calculate the total amount of rifampin needed for the client, follow these steps:
1. Calculate the total dosage required:
Dosage = 4 mg/kg * 43 kg = 172mg
2. Determine the total amount needed for 6 days:
Total dosage for 6 days= 172 mg/dose * 3 doses/day * 6 days = 3096 mg
3. Calculate how many 100 mg bottles are needed:
Number of bottles = 3096mg/100 mg/bottle = approx 31
Rounding to the nearest whole number, 31 bottles of 100 mg rifampin will be required for this client.
Correct Answer is B
Explanation
A. 1 mL syringe with a 22 G 1.5-inch needle:
This choice has an appropriate needle length for an IM (intramuscular) injection, but the gauge is thicker than needed for a subcutaneous injection. A smaller gauge (higher number) is generally preferred for subcutaneous injections to minimize pain and tissue damage.
B. U-100 unit syringe with a 25 G 5/8-inch needle:
This is the correct choice. U-100 syringes are specifically designed for insulin administration, with markings corresponding to the concentration of insulin (100 units per mL). The 25 G needle is thin enough for a subcutaneous injection, and the 5/8-inch length is appropriate for most patients, ensuring the insulin reaches the subcutaneous tissue.
C. Tuberculin syringe with a 25 G 5/8-inch needle:
While the needle specifications match the requirements for a subcutaneous injection, tuberculin syringes are not typically used for insulin administration. Insulin syringes are designed specifically for accurate insulin dosing and are the preferred choice.
D. 3 mL Syringe with a 23 G 1-inch needle:
The needle length is appropriate for a subcutaneous injection, but the gauge (23 G) is slightly thicker than the standard 25 G needle used for insulin injections. Thinner needles (higher gauge numbers) are generally preferred for subcutaneous insulin injections.
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