The health care provider has prescribed diphenhydramine (Benadryl) 5 mg/kg/dose for a child with urticaria weighing 44 lbs. (20 kg). Assume this is a safe dose. The medication is supplied as 12.5 mg/5 ml. How many milliliters will the nurse administer to the child for one dose? Record your answer using a whole number.
The Correct Answer is ["8"]
To calculate the dosage of diphenhydramine (Benadryl) for the child, we first determine the total milligrams needed per dose by multiplying the child's weight in kilograms by the prescribed milligrams per kilogram. The child weighs 20 kg, so the calculation is 20 kg * 5 mg/kg, which equals 100 mg per dose. The medication is supplied at a concentration of 12.5 mg per 5 ml. To find out how many milliliters are needed to provide 100 mg, we set up a proportion: 12.5 mg/5 ml = 100 mg/x ml. Solving for x gives us x = (100 mg * 5 ml) / 12.5 mg, which equals 40 ml. Therefore, the nurse will administer 40 milliliters of the medication for one dose.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Cashews contain some iron but are not the highest source compared to red meat.
B. Oranges are high in vitamin C but low in iron; they can help with iron absorption when consumed with iron-rich foods.
C. Yogurt provides calcium and protein but is not a significant source of iron.
D. Red meat is an excellent source of heme iron, which is more easily absorbed by the body than non-heme iron found in plant foods.
Correct Answer is ["10"]
Explanation
To calculate the dosage of ondansetron for the child, first convert the child's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs 44 lbs, which is equivalent to 20 kg (44 lbs / 2.2 lbs per kg). The prescribed dose is 0.5 mg/kg, so you would multiply the child's weight in kilograms by the dose: 20 kg * 0.5 mg/kg = 10 mg. Since the safe dose is up to 5 mg/kg per dose and the child's weight is 20 kg, the maximum safe dose would be 100 mg (20 kg * 5 mg/kg). Therefore, the nurse should administer 10 mg, as it is within the safe dose range.
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