Which statement is true regarding safe administration of parenteral medications?
The 5 mL syringe is calibrated in increments of 0.1 mL for injections.
Powder medications are often mixed with a diluent to preserve for one month.
Ampules are glass containers used for single doses of medication.
The needle attaches to the plunger for intramuscular injections.
The Correct Answer is C
A. "The 5 mL syringe is calibrated in increments of 0.1 mL for injections."
This statement is false. A 5 mL syringe is typically calibrated in larger increments, such as 0.2 mL or 0.5 mL, making it easier for healthcare providers to measure and administer medications accurately.
B. "Powder medications are often mixed with a diluent to preserve for one month."
This statement is false. Powder medications are often mixed with a diluent (such as sterile water or saline) to reconstitute them before administration. However, the reconstituted solution is typically used immediately or within a very short period, and it is not preserved for a month due to the risk of contamination and degradation of the medication.
C. "Ampules are glass containers used for single doses of medication."
This statement is true. Ampules are small, sealed glass containers used for single doses of medication. They are designed for one-time use and are broken open just before administration to maintain the sterility of the medication inside.
D. "The needle attaches to the plunger for intramuscular injections."
This statement is false. In intramuscular injections, the needle is attached to the syringe barrel, not the plunger. The plunger is used to push the medication out of the syringe and through the needle into the muscle tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To provide the appropriate dose of 5 mL of 10% dextrose using a vial of 5 mL 50% dextrose, you need to dilute the concentrated solution to the desired concentration.
The correct method is:
Dextrose 50%, add 3 mL to 2 mL injectable saline
Here's the explanation:
1. Dextrose concentration in 5 mL of 50% dextrose:
5 mL * 50% = 2.5 mL of pure dextrose (2500 mg)
2. To prepare 5 mL of 10% dextrose:
- You need 5 mL of the final solution, and you already have 2.5 mL of pure dextrose from the 50% solution.
- You need to dilute the remaining 2.5 mL of 50% dextrose with injectable saline.
- Calculate the volume of 50% dextrose to add: (5 mL - 2.5 mL = 2.5 mL)
3. Dilution with injectable saline:
- You have 2.5 mL of 50% dextrose and need to add 2.5 mL of injectable saline.
- Mixing 2.5 mL of 50% dextrose with 2.5 mL of injectable saline gives a total volume of 5 mL.
- The resulting solution contains 2.5 mL of 50% dextrose and 2.5 mL of saline, making it 10% dextrose.
Therefore, the nurse should use Dextrose 50%, add 3 mL to 2 mL injectable saline to provide the appropriate dose of 5 mL of 10% dextrose.
Correct Answer is A
Explanation
To set up the IV pump to deliver Zofran (ondansetron) 0.15 mg/kg over 15 minutes for a patient weighing 176 lb, you'll need to convert the patient's weight to kilograms first, as the medication dosage is typically based on kilograms.
Convert the patient's weight from pounds to kilograms:
Patient's weight in kg = Patient's weight in lb / 2.2046
Patient's weight in kg = 176 lb / 2.2046 Patient's weight in kg ≈ 79.83 kg (rounded to two decimal places)
Calculate the total dose of ondansetron:
Dosage (mg) = Weight (kg) × Dosage per kg (mg/kg) Dosage (mg) = 79.83 kg × 0.15 mg/kg
Dosage (mg) ≈ 11.975 mg (rounded to three decimal places)
Determine the infusion time in hours:
Infusion time (hr) = 15 minutes / 60 minutes (since there are 60 minutes in 1 hour) Infusion time (hr) = 0.25 hr
Calculate the infusion rate (mL/hr):
Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr) Infusion rate (mL/hr) = 50 mL / 0.25 hr Infusion rate (mL/hr) = 200 mL/hr
So, the nurse should set the IV pump to deliver the correct dose at a rate of 200 mL/hr to infuse Zofran (ondansetron) 0.15 mg/kg over 15 minutes for the patient weighing 176 lb.
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