What symptoms should a nurse expect in a 6-week-old infant admitted for evaluation of suspected pyloric stenosis?
Projectile vomiting.
Effortless regurgitation.
Metabolic acidosis.
Distended abdomen.
The Correct Answer is A
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
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.
Correct Answer is ["3.125"]
Explanation
The child weighs 22 lb, which is approximately 10 kg (since 1 kg is approximately 2.2 lb).
The prescribed dose of acetaminophen is 10 mg/kg. Step 1 is: Calculate the total dose of acetaminophen for the child. This is done by multiplying the child’s weight in kg by the prescribed dose in mg/kg. 10 kg×10 mg/kg=100 mg The available acetaminophen liquid is 160 mg/5 mL. Step 2 is: Calculate the volume of acetaminophen liquid to administer. This is done by setting up a proportion with the total dose of acetaminophen and the concentration of the available liquid. x mL100 mg=5 mL160 mg Solving for x gives: x=160 mg mg×5 mL=3.125 mL Therefore, the nurse should administer approximately 3.125 mL of the acetaminophen liquid. .
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