A nurse is preparing to administer a dexamethasone 1.5 mg/kg/day PO to divide equally every 6 hr to a preschool-age child who weighs 22 lb. Available is dexamethasone oral solution 1 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["3.8"]
Convert the child’s weight to kg:
22 lb ×1kg/2.2lb = 10 kg
Calculate the daily dose:
1.5 mg/kg/day × 10 kg=15mg/day
Divide the total daily dose by the number of doses per day (every 6 hours):
15mg/day ÷ 4doses/day =3.75mg/dose
Convert the dose to mL using the concentration:
3.75mg × 1 mL/1 mg = 3.75 mL
Round to the nearest tenth:
3.75 mL≈ 3.8 mL
Answer: The nurse should administer 3.8 mL per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Drink eight glasses of fluid daily: Maintaining hydration is crucial in preventing sickle cell crises as it helps to keep the blood less viscous, reducing the risk of vaso-occlusion.
B. Maintain an updated haemophilus influenza type B immunization: While staying up to date on vaccinations is important, it is not specific to preventing sickle cell crises.
C. Assume postural drainage positions every 6 hr: This is more relevant for respiratory conditions like cystic fibrosis, not sickle cell anemia.
D. Avoid playground activities at school: Regular activity is beneficial, but avoiding extreme physical exertion is more relevant. Normal playground activities can usually be continued with proper hydration and caution.
Correct Answer is C
Explanation
A. A 4-year-old preschooler who has status asthmaticus and a pulse oximetry of 95%. While status asthmaticus is a serious condition, a pulse oximetry reading of 95% indicates adequate oxygenation, so this child is not in immediate distress.
B. A 1-year-old infant who has roseola and a temperature of 39°C (102.2°F). While the fever requires monitoring and treatment, roseola is typically a self-limiting illness, and this temperature, while high, is not immediately life-threatening.
C. A 7-year-old child who has diabetes insipidus and a urine specific gravity of 1.002. A urine specific gravity of 1.002 indicates very dilute urine, which is concerning for diabetes insipidus and potential dehydration. This condition requires immediate attention to prevent severe dehydration and electrolyte imbalance.
D. A 10-year-old child who has sickle cell anemia and a pain rating of 6 on a 0 to 10 scale. While managing pain in sickle cell anemia is important, the child’s condition is stable, and pain relief can be addressed after assessing the more urgent case of potential dehydration in the child with diabetes insipidus.
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