The Health Care Provider prescribes Amoxicillin at a dosage of 35mg/kg/dose for a child who weighs 34 lbs. and has Otitis Media. The medication is available in a suspension of 50 mg/ml. What is the total daily dosage in ml for this child?
10 ml
20 ml
30 ml
40 ml .
The Correct Answer is A
Step 1 is to convert the child’s weight from pounds to kilograms.
This is done by dividing the weight in pounds by 2.2, so 34 lbs ÷ 2.2 = 15.45 kg. Step 2 is to calculate the dose in mg. This is done by multiplying the weight in kg by the dosage per kg, so 15.45 kg × 35 mg/kg = 540.75 mg. Step 3 is to convert the dose in mg to ml. This is done by dividing the dose in mg by the concentration of the medication in mg/ml, so 540.75 mg ÷ 50 mg/ml = 10.815 ml. So, the total daily dosage in ml for this child is approximately 10.82 ml, rounded to the nearest hundredth as required.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Projectile vomiting is a common symptom in infants with pyloric stenosis. This is due to the narrowing of the pylorus, the muscular valve at the bottom of the stomach, which prevents breast milk or formula from passing through to the small intestine.
Choice B rationale
Effortless regurgitation is not typically associated with pyloric stenosis. The hallmark symptom of pyloric stenosis is projectile vomiting.
Choice C rationale
Metabolic acidosis is not a typical symptom of pyloric stenosis. The hallmark symptom of pyloric stenosis is projectile vomiting.
Choice D rationale
While a distended abdomen can occur in some cases of pyloric stenosis, it is not the most common symptom. The hallmark symptom of pyloric stenosis is projectile vomiting.

Correct Answer is C
Explanation
The correct answer is Choice C.
Step 1: Convert the child’s weight from lbs to kg.
Since 1 lb is approximately 0.45 kg, a child who weighs 6 lbs weighs approximately 2.72 kg (6 lbs × 0.45 =2.72 kg). Step 2: Calculate the total daily dose of Ampicillin. The total daily dose is 50 mg/kg/day, so for a child who weighs 2.72 kg, the total daily dose would be approximately 136 mg (50 mg/kg/day × 2.72 kg = 136 mg/day). Step 3: Since the total daily dose is divided into q hr doses (4 doses per day), each dose would be approximately 34 mg (136 mg/day ÷ 4 doses/day = 34 mg/dose). So, the child will receive approximately 34 mg of Ampicillin with each dose.
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