A child who weighs 44 pounds with otitis media receives a prescription for azithromycin 10 mg/kg once, then 10 mg/kg daily for 4 days. The medication is available in a solution containing 200 mg/5mL. How many mL should the nurse administer on the first day of the treatment regimen? (Enter numeric value only.)
The Correct Answer is ["5"]
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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Related Questions
Correct Answer is ["4.8"]
Explanation
The vial is labeled as “100 mg per 4 mL.”
This means that each mL contains 25 mg of the medication (100 mg / 4 mL = 25 mg/mL).
The nurse needs to administer 120 mg of the medication.
To find out how many mL this is, we divide the dose by the concentration:
VolumeinmL = 120mg / 25mg/mL = 4.8mL
If rounding is required to the nearest tenth, the nurse should administer 4.8 mL of the medication.
Correct Answer is ["18"]
Explanation
Here's how to calculate the rate (mL/hour) for the infusion pump:
Heparin concentration:
The medication is available in a 250 mL bag containing 20,000 units of heparin.
Heparin concentration (units/mL) = Total heparin (units) / Volume (mL)
Heparin concentration (units/mL) = 20,000 units / 250 mL
Heparin concentration (units/mL) = 80 units/mL (round to nearest whole number)
Prescribed heparin dose: 1,400 units/hour (given)
We need to find the volume delivered per hour (mL/hour) to achieve the prescribed heparin dose (1400 units/hour) considering the concentration (80 units/mL).
Infusion rate (mL/hour) = Dose (units/hour) / Concentration (units/mL)
Infusion rate (mL/hour) = 1400 units/hour / 80 units/mL
Infusion rate (mL/hour) = 17.5 mL/hour (round to nearest whole number)
Therefore, the nurse should program the infusion pump to deliver approximately 18 mL/hour.
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