The healthcare provider prescribes filgrastim 5 mcg/kg subqutaneous (SubQ) for a client who weighs 176 pounds. The available vial is labeled, "Filgrastim 300 mcg/mL. Based on the client's weight, how many milliliters should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.3"]
here's how to calculate the volume (mL) of filgrastim the nurse should administer:
Client weight conversion:
Client weight: 176 pounds
Since medication dosage is based on weight per kilogram (kg), we need to convert the weight to kg for accurate calculation.
Conversion factor: 1 kg = 2.205 lbs
Client weight (kg) = 176 pounds / 2.205 lbs/kg
Client weight (kg) = 80 kg (round to nearest whole number)
Filgrastim dose per kg:
Dose per kg = 5 mcg/kg (given)
Filgrastim concentration:
The medication vial is labeled 300 mcg/mL. This indicates there are 300 mcg of filgrastim in every 1 mL of solution.
We need to find the volume (mL) containing the prescribed dose (based on weight) of filgrastim (5 mcg/kg) considering the concentration (300 mcg/mL) in the vial.
Total filgrastim dose (mcg): Dose (mcg/kg) x Client weight (kg)
Total filgrastim dose (mcg): 5 mcg/kg * 80 kg
Total filgrastim dose (mcg): 400 mcg
Volume to administer (mL): Total dose (mcg) / Concentration (mcg/mL)
Volume to administer (mL): 400 mcg / 300 mcg/mL
Volume to administer (mL) = 1.33 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 1.3 mL of filgrastim subcutaneously.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2.4"]
Explanation
Here's how to calculate the volume (mL) of the reconstituted cefazolin solution the nurse should administer for each dose:
1. We know the following:
Prescribed dose: 800 mg cefazolin (given)
Vial information:
Contains 1 gram cefazolin (given) = 1000 mg (since 1 gram = 1000 milligrams)
Reconstituted with 2.5 mL sterile water for injection (given)
Yields a total volume of 3.0 mL (given)
2. We need to find the concentration of cefazolin (mg/mL) in the reconstituted solution.
3. Then, we can find the volume (mL) to administer for the prescribed dose (800 mg) considering the concentration.
Steps:
a. Calculate the concentration after reconstitution:
Total volume after reconstitution = 3.0 mL (given)
Total amount of cefazolin after reconstitution = 1 gram (from the vial) = 1000 mg
Concentration (mg/mL) = Total amount of medication (mg) / Total volume after reconstitution (mL)
Concentration (mg/mL) = 1000 mg / 3.0 mL
Concentration (mg/mL) = 333.33 mg/mL (round to one decimal place)
b. Calculate the volume to administer:
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
Volume to administer (mL) = 800 mg / 333.33 mg/mL
Volume to administer (mL) = 2.4 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 2.4 mL of the reconstituted cefazolin solution intramuscularly every 6 hours.
Correct Answer is ["20"]
Explanation
First, we need to determine the concentration of insulin in the IV bag.
The bag contains 50 units of insulin in 100 mL,
so the concentration is 50 units/100 mL = 0.5 units/mL.
The prescription rate is 10 units/hour.
At a concentration of 0.5 units/mL,
this dosage is equivalent to
10 units/hour ÷ 0.5 units/mL = 20 mL/hour.
So, the nurse should program the infusion pump to deliver 20 mL/hour.
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