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 C
Explanation
A. "SIDS is directly correlated to diphtheria, tetanus, and pertussis vaccines." This statement is incorrect and misleading. There is no direct correlation between SIDS and vaccinations like the diphtheria, tetanus, and pertussis (DTP) vaccines. In fact, immunizations are an important part of a child's health and can help prevent diseases that could lead to complications, including those that might be indirectly related to SIDS risk factors.
B. "SIDS rates have been rising over the last 10 years." This statement is false. SIDS rates have generally been decreasing, especially since the introduction of public health campaigns promoting safe sleep practices, such as placing infants on their backs to sleep.
C. "You should place your baby on her back when sleeping to decrease the risk of SIDS." This is the correct and evidence-based recommendation. Placing a baby on their back to sleep significantly reduces the risk of SIDS. This practice is part of the "Back to Sleep" campaign, which has been shown to lower the incidence of SIDS.
D. "Sleep apnea is the main cause of SIDS." This statement is incorrect. While sleep apnea has been studied as a potential risk factor, it is not considered the main cause of SIDS. The exact cause of SIDS is still unknown, but it is believed to be related to multiple factors, including sleep environment and infant physiology.
Correct Answer is D
Explanation
A. Tachycardia: Hypercalcemia is more likely to cause bradycardia (slow heart rate) due to its depressive effects on the cardiac muscle.
B. Diarrhea: Hypercalcemia typically leads to constipation, not diarrhea.
C. Positive Chvostek's sign: This is associated with hypocalcemia, not hypercalcemia.
D. Muscle hypotonicity: Hypercalcemia can lead to muscle weakness and hypotonicity due to its effects on nerve and muscle function.
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