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
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Correct Answer is A
Explanation
A. Assist with administering a blood transfusion. Blood transfusions are often necessary in sickle cell crisis to manage severe anemia and improve oxygen delivery to tissues. This action helps alleviate the symptoms of the crisis and prevent complications.
B. Withhold opioids to avoid dependence. Opioids are essential for managing the severe pain associated with sickle cell crises. Concerns about dependence should not prevent adequate pain management in an acute setting.
C. Encourage exercise. During a sickle cell crisis, rest is crucial to reduce oxygen demand and prevent further sickling of red blood cells. Exercise is contraindicated during a crisis.
D. Initiate a 2 L/day fluid restriction. Adequate hydration is critical in managing sickle cell crisis, as it helps prevent further sickling of cells. Fluid restriction is inappropriate and could worsen the condition.
Correct Answer is B
Explanation
A. Hepatitis B (HBV): The Hepatitis B vaccine is typically completed in the infant stage, and a 5-year-old with up-to-date vaccinations would not need a booster for school entry. This is not included in the pre-kindergarten vaccine schedule.
B. Measles, mumps, and rubella (MMR): The MMR vaccine is part of the pre-kindergarten immunization schedule. A second dose is recommended between ages 4 and 6 to ensure immunity before school entry.
C. Haemophilus influenzae type B (Hib): The Hib vaccine is typically administered to infants and young children, and a 5-year-old with up-to-date immunizations would already be fully vaccinated against Hib. No booster is required at this age.
D. Pneumococcal conjugate vaccine (PCV): The PCV vaccine series is usually completed in infancy, and a 5-year-old with current vaccinations would not require a booster. This vaccine is not part of the pre-kindergarten schedule.
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