The healthcare provider prescribes amoxicillin 500 mg PO every 8 hours for a child who weighs 88 pounds. The recommended maximum safe dose is 50 mg/kg/24 hours. The available suspension is labeled, "Amoxicillin Suspension 250 mg/5 mL. Based on this child's weight, how many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the whole number.)
The Correct Answer is ["10"]
First, we need to convert the child’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So,
Weight in kg= Weight in pounds/2.20462 = 2.2046288 ≈ 39.92kg
The prescribed dosage is 500 mg every 8 hours, which means three doses per day (since there are 24 hours in a day). Therefore, the total daily dosage is 500 mg * 3 = 1500 mg.
The recommended maximum safe dose is 50 mg/kg/24 hours. Therefore, the maximum safe dosage for this child would be:
Maximum safe dosage in mg=Dosage per kg×Weight in kg=50mg/kg×39.92kg=1996mg
Since the prescribed daily dosage (1500 mg) is less than the maximum safe dosage (1996 mg), it is safe to administer the prescribed dosage.
The medication is available in a concentration of 250 mg/5 mL. Therefore, the volume to be administered per dose in mL would be:
Volume in mL= Dosage per dose in mg/ Concentration in mg/mL = 500mg/50mg/mL = 10mL
So, the nurse should administer 10 mL of Amoxicillin Suspension per dose.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.6"]
Explanation
Here's the corrected calculation for the volume to be administered:
Dosage: 60 mg
Concentration: 100 mg/mL
Volume to administer:
Volume (mL) = Dosage (mg) / Concentration (mg/mL)
Volume (mL) = 60 mg / 100 mg/mL
Volume (mL) = 0.6 mL
Therefore, the nurse should administer 0.6 mL of enoxaparin sodium injection.
Correct Answer is ["12","000"]
Explanation
Here's the calculation for how many heparin units the client will receive in 12 hours:
Heparin concentration: The concentration of the heparin solution is 20,000 units in 500 mL (given). This translates to 40 units/mL (concentration = total units / volume).
Infusion rate: The client is receiving the solution at a rate of 25 mL/hour (given).
Time: We need to find the total heparin units received over 12 hours.
Calculation:
Find the total volume of the solution infused in 12 hours:
Total volume (mL) = Rate (mL/hour) x Time (hours)
Total volume (mL) = 25 mL/hour x 12 hours
Total volume (mL) = 300 mL
Find the total heparin units delivered in the infused volume:
Total heparin units = Volume of solution (mL) x Concentration (units/mL)
Total heparin units = 300 mL x 40 units/mL
Total heparin units = 12,000 units
Therefore, the client will receive 12,000 units of heparin in 12 hours.
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