A nurse is preparing 10 units Humulin R subcutaneously.
What is the appropriate syringe and needle for administration of the Humulin R?
1 mL syringe with a 22 G 1.5-inch needle
U-100 unit syringe with a 25 G 5/8-inch needle
Tuberculin syringe with a 25 G 5/8-inch needle
3 mL Syringe with a 23 G 1-inch needle
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
To calculate the infusion rate for esmolol for the client, follow these steps:
Convert the dose requirement from micrograms to milligrams:
200 mcg = 0.2 mg (since 1 mg = 1000 mcg)
Calculate the total daily dose requirement:
Dose = 0.2 mg/kg/min * 65 kg * 60 min/hour = 780 mg/hour
Determine the infusion rate per hour:
The dose on hand is 2.500 mg in 250 mL of fluid, which means there's 10 mg per mL of fluid (2.500 mg / 250 mL = 10 mg/mL).
To deliver 780 mg over one hour, you'll need:
Rate = Dose / Concentration = 780 mg / 10 mg/mL = 78 mL/hour
So, the nurse should calculate the infusion rate to be 78 mL/hr to administer the medication at a dose of 200 mcg/kg/min to the client.
Correct Answer is B
Explanation
To calculate the dosage of fosphenytoin for a 57 kg client at a rate of 0.5 mg/kg, you can use the following formula:
Dosage (mg) = Weight (kg) × Dosage per kg (mg/kg)
Dosage (mg) = 57 kg × 0.5 mg/kg
Dosage (mg) = 28.5 mg
The dosage that needs to be administered to the client is 28.5 mg.
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