The healthcare provider prescribes epinephrine 0.01 mg/kg IM for an adolescent with an acute asthma episode who weighs 110 pounds. The available medication is labeled, 1 mg/mL. Based on the client's weight, how many mL should the nurse administer to this client? (Enter numerical value only, rounded to the nearest tenth.)
The Correct Answer is ["0.5"]
here's how to calculate the volume (mL) of epinephrine the nurse should administer:
1. Client weight conversion:
Client weight: 110 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) = 110 pounds / 2.205 lbs/kg
Client weight (kg) = 50 kg (round to nearest whole number)
2. Epinephrine dosage:
Prescribed dose: 0.01 mg/kg (given)
3. Epinephrine concentration:
The medication is labeled 1 mg/mL. This indicates there are 1 mg of epinephrine per 1 mL of solution.
4. We need to find the volume (mL) containing the prescribed dose (based on weight) of epinephrine (0.01 mg/kg) considering the concentration (1 mg/mL) in the vial.
Total epinephrine dose (mg): Dose (mg/kg) x Client weight (kg)
Total epinephrine dose (mg): 0.01 mg/kg * 50 kg
Total epinephrine dose (mg): 0.5 mg (round to nearest tenth)
Volume to administer (mL): Total dose (mg) / Concentration (mg/mL)
Volume to administer (mL): 0.5 mg / 1 mg/mL
Volume to administer (mL): 0.5 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 0.5 mL of epinephrine intramuscularly.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2.4"]
Explanation
Here's how to calculate the volume (mL) the nurse should administer for cefazolin:
1. We know the following:
Prescribed dose: 800 mg cefazolin IM every 6 hours (given)
Vial content: 1 gram cefazolin (given)
However, we need to consider the reconstitution process for accurate dosage calculation.
Reconstitution information:
For IM use, add 2.5 mL sterile water for injection.
This dilution creates a total volume of 3.0 mL.
3. We need to find the concentration of cefazolin in the reconstituted solution (mg/mL).
Concentration (mg/mL) = Total drug amount (mg) / Total volume (mL) after reconstitution
Concentration (mg/mL) = 1 gram (which is 1000 mg) / 3.0 mL
Concentration (mg/mL) = 333.33 mg/mL (round to nearest tenth)
4. Now, we can find the volume to administer for the prescribed dose (800 mg) considering the concentration (333.33 mg/mL) in the reconstituted solution.
Volume to administer (mL): Dose (mg) / Concentration (mg/mL)
Volume to administer (mL): 800 mg / 333.33 mg/mL
Volume to administer (mL): 2.40 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 2.4 mL of the reconstituted cefazolin solution intramuscularly.
Correct Answer is ["5"]
Explanation
Here's how to calculate the volume of medication the nurse should administer on the first day:
1. Convert child's weight to kilograms (kg):
We know 1 kg = 2.205 pounds.
Child weight (kg) = 44 pounds / 2.205 pounds/kg = 20 kg (round to nearest whole number for this calculation).
2. Calculate the total azithromycin medication for the first day (mg):
Prescribed dosage (mg/kg): 10 mg/kg
Child weight (kg): 20 kg (rounded value from step 1)
Total medication on day 1 (mg) = Dosage (mg/kg) x Client weight (kg)
Total medication on day 1 (mg) = 10 mg/kg x 20 kg = 200 mg
3. Determine the volume (mL) needed based on the medication concentration:
Medication concentration (mg/mL): 200 mg/5 mL (given)
Total medication on day 1 (mg): 200 mg (calculated in step 2)
Volume to administer (mL) = Total medication (mg) / Concentration (mg/mL)
Volume to administer (mL) = 200 mg / 200 mg/5 mL
Volume to administer (mL) = 5 mL
Therefore, the nurse should administer 5 mL of the azithromycin solution on the first day.
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