An 88 pound child with iron deficiency anemia has been prescribed ferrous fumarate 3 mg/kg/day PO three times daily. The medication is available in oral suspension of 100 mg/5 ml. The nurse is instructing the mother in measuring the correct dose. How many ml should the child receive for each dose?
The Correct Answer is ["2"]
Calculating the Ferrous Fumarate Dose
Problem: Administer ferrous fumarate 3 mg/kg/day PO three times daily to an 88-pound child. The available concentration is 100 mg/5 mL.
Steps:
Convert pounds to kilograms:
88 pounds x (1 kg / 2.20462 pounds) ≈ 39.9 kg
Calculate the daily dose:
3 mg/kg/day x 39.9 kg = 119.7 mg/day
Calculate the dose per administration (TID):
119.7 mg/day / 3 doses = 39.9 mg/dose
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (39.9 mg) and the concentration of the medication (100 mg/5 mL).
Proportion:
x mL / 39.9 mg = 5 mL / 100 mg
Cross-multiply:
100x = 199.5
Solve for x:
x = 199.5 / 100
x ≈ 2
Answer: The child should receive approximately 2 mL of ferrous fumarate oral suspension for each dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["22"]
Explanation
Calculating the Propofol Infusion Rate
Step 1: Convert weight to kilograms:
198 lbs x (1 kg / 2.20462 lbs) ≈ 90 kg
Step 2: Calculate the desired dose rate in mcg/minute:
8 mcg/kg/minute x 90 kg = 720 mcg/minute
Step 3: Calculate the concentration of propofol in the IV solution:
100 mg/50 mL = 2 mg/mL
Step 4: Calculate the infusion rate in mL/hour:
First, convert mcg to mg:
720 mcg x (1 mg / 1000 mcg) = 0.72 mg/minute
Then, set up a proportion:
x mL/hour / 0.72 mg/minute = 60 minutes/hour / 2 mg/mL
Cross-multiply and solve for x:
x mL/hour = 0.72 mg/minute x 60 minutes/hour / 2 mg/mL
x mL/hour ≈ 21.6 mL/hour
Therefore, the nurse should program the infusion pump to deliver approximately 22 mL/hour.
Correct Answer is C
Explanation
To calculate the infusion time, we'll use the following formula:
Infusion Time (hours) = Total Volume (mL) / Infusion Rate (mL/hour)
Plugging in the given values:
Infusion Time = 1000 mL / 75 mL/hour
Calculating the result:
Infusion Time ≈ 13.33 hours
Converting hours to minutes:
0.33 hours x 60 minutes/hour ≈ 20 minutes
Therefore, the infusion will be completed approximately 13 hours and 20 minutes after it started at 0300.
Adding 13 hours and 20 minutes to 0300:
0300 + 13 hours + 20 minutes = 1620
So, the correct answer is C. 1620.
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