Calculate the amount to administer.
Ordered: Acetylcysteine 400 mg q4h inhalation
On hand: Acetylcysteine 20% solution
The Correct Answer is ["2"]
Desired dose = 400 mg.
- Determine the available concentration.
A 20% solution = 20 g per 100 mL = 20,000 mg per 100 mL
So the concentration is:
20,000 mg/100 mL
=200 mg/mL
- Calculate the volume to administer per dose.
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
= 400 mg / 200 mg/mL
= 2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["17.5"]
Explanation
Ordered dose: 175 mg.
- Determine the concentration of the medication from the label.
The label states the concentration is 50 mg per 5 mL.
Concentration:
50 mg / 5 mL
= 10 mg/mL.
- Calculate the volume to administer per dose.
Volume (mL) = Desired Dose / Concentration
= 175 mg / 10 mg/mL
= 17.5 mL.
Correct Answer is A
Explanation
A. 60 gtt/mL: Microdrip tubing universally delivers 60 drops per milliliter (gtt/mL). It is used when precise, small-volume infusions are required, such as for pediatrics or medication titration.
B. 20 gtt/mL: This is a common drop factor for macrodrip tubing, not microdrip. It delivers larger drops and is used for general fluid administration, not precise dosing.
C. 10 gtt/mL: This drop factor also applies to macrodrip tubing, especially for rapid fluid replacement. It is not suitable for microdrip administration.
D. 15 gtt/mL: Like 10 and 20, this is another macrodrip factor. It is used for routine fluid infusions, but does not provide the fine control offered by microdrip tubing.
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