A nurse is planning to administer diphenhydramine 1.25 mg/kg IV to a school-age child who weighs 55 lb. Available is diphenhydramine 50 mg/mL. How many ml should the nurse administer?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.6"]
Rationale:
First, we need to convert the child's weight from pounds to kilograms. We can do this by dividing 55 by 2.2, which gives us 25 kg.
Next, we need to multiply the dose of diphenhydramine by the child's weight to get the total amount of medication needed. We can do this by multiplying 1.25 mg/kg by 25 kg, which gives us 31.25 mg.
Finally, we need to divide the total amount of medication by the concentration of the solution to get the volume to be administered. We can do this by dividing 31.25 mg by 50 mg/mL, which gives us 0.625 mL.
To round the answer to the nearest tenth, we look at the hundredths place and see that it is 5 or more, so we round up the tenths place by one. Therefore, the nurse should administer 0.6 mL of diphenhydramine IV to the child.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Capillary refill time of 3 seconds is within the normal range (less than 3 seconds) and does not indicate severe dehydration.
B. A sunken anterior fontanel is a significant sign of dehydration in infants and suggests severe dehydration.
C. While a weight loss of 5% can indicate dehydration, it may not necessarily represent severe dehydration. The extent of dehydration is better assessed by clinical signs such as fontanel status, skin turgor, and mucous membrane moisture.
D. Producing tears when crying is a reassuring sign and suggests adequate hydration, so it does not indicate severe dehydration.
Correct Answer is A
Explanation
- A) Checking clothing for loose buttons is important because toddlers can easily remove and swallow small objects, which can lead to choking hazards.
- B) Adjusting the water heater temperature to 54° C (129.2° F) is not recommended as it poses a risk of scalding. Safe water temperatures for households with toddlers should be at or below 49° C (120° F).
- C) Placing screens on all windows is a crucial safety measure to prevent toddlers from falling out of open windows, which can lead to serious injuries or fatalities.
- D) Providing balloons for play is not advisable as uninflated or broken balloons can be a choking hazard for toddlers. It is one of the leading causes of choking deaths in children.
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