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.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is C
Explanation
A. Methylprednisolone: Methylprednisolone is a corticosteroid used to reduce inflammation in the airways. While effective in managing asthma, it has a slower onset of action and is used for longer-term management rather than immediate relief in acute situations.
B. Montelukast: Montelukast is a leukotriene receptor antagonist used for long-term control of asthma symptoms. It is not effective for immediate relief during an acute asthma attack because it takes time to exert its effects.
C. Albuterol: Albuterol is a short-acting beta-agonist that provides rapid bronchodilation. It is the first-line medication for immediate relief of bronchospasm during an acute asthma attack, making it the most appropriate choice for immediate administration.
D. Fluticasone: Fluticasone is an inhaled corticosteroid used for long-term asthma management and prevention of exacerbations. It is not suitable for immediate relief of an acute asthma attack as it does not act quickly enough to relieve bronchospasm.
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.
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