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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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Rationale:
A. Odorless urine may be an indicator of improved hydration status but does not directly reflect the effectiveness of treatment for nephrotic syndrome.
B. Absence of pain with voiding may indicate resolution of urinary tract symptoms but is not a specific indicator of treatment effectiveness for nephrotic syndrome.
C. Increased urine output indicates improved renal function, which is a primary goal of treatment for nephrotic syndrome, making this the most appropriate indicator of treatment effectiveness.
D. Temperature within normal range is not a direct indicator of treatment effectiveness for nephrotic syndrome.
Correct Answer is B
Explanation
Rationale:
A. Rolling over from back to abdomen typically occurs around 4 to 6 months of age.
While it may be slightly delayed, it is not usually concerning at 5 months.
B. Head lag at 5 months is abnormal and may indicate weakness or poor muscle tone, warranting further evaluation by the healthcare provider.
C. Not all infants are able to hold a bottle at 5 months, and this finding alone may not be concerning.
D. The grasp reflex typically diminishes by 3 to 4 months of age, so it may not be present at 5 months. While it's a developmental milestone, its absence alone may not warrant immediate concern at this age.
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