A 4-year-old child who weighs 44 lbs is diagnosed with Streptococcal Pharyngitis and is prescribed Penicillin. 40 mg/kg/day, twice a day for 10 days. The suspension is written as 400 mg/5 ml. Calculate one dose in mg.
400 mg.
800 mg.
1200 mg.
1600 mg.
The Correct Answer is B
Choice A rationale:
The dosage prescribed for the child is 40 mg/kg/day, twice a day for 10 days. The child weighs 44 lbs, which is approximately 20 kg (1 lb = 0.45 kg). Therefore, the total daily dosage would be 40 mg/kg * 20 kg = 800 mg. This is split into two doses, so each dose would be 400 mg, not 400 mg per 5 ml as in the suspension.
Choice B rationale:
As explained above, the total daily dosage is 800 mg, split into two doses of 400 mg each. The suspension is written as 400 mg/5 ml, so one dose would be 400 mg.
Choice C rationale:
This choice is incorrect because it does not accurately calculate the dosage based on the child's weight and the prescribed dosage regimen.
Choice D rationale:
This choice is incorrect because it suggests a higher dose than what is prescribed. The correct dosage, based on the child's weight and prescription, is 800 mg per day, split into two doses of 400 mg each.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B"]
Explanation
Choice A rationale:
The cuff labeled "toddler" is an appropriate criterion for selecting the right-sized blood pressure cuff for a 2-year-old boy. Pediatric blood pressure cuffs are available in different sizes, and using a cuff specifically labeled for toddlers ensures a proper fit and accurate blood pressure measurement.
Choice B rationale:
The cuff bladder width being approximately 40% of the circumference of the upper arm is a correct criterion. Using a cuff with an appropriate width ensures that the cuff covers a significant portion of the upper arm, allowing for accurate blood pressure measurement. A cuff that is too narrow or too wide can lead to inaccurate readings.
Choice C rationale:
The cuff bladder length covering 80% to 100% of the circumference of the upper arm is an incorrect criterion. The length of the cuff bladder should cover about 80% of the upper arm's circumference, not 80% to 100%. Using a cuff that is too long can result in falsely low blood pressure readings.
Choice D rationale:
The cuff bladder covering 50% to 66% of the length of the upper arm is an incorrect criterion. The bladder width, which covers the circumference of the upper arm, is more critical than the length. The width should be approximately 40% of the upper arm's circumference for accurate blood pressure measurement in children.
Correct Answer is A
Explanation
Choice A rationale:
A brilliant, uniform red reflex observed during a funduscopic examination is a normal finding. It indicates the absence of any abnormalities in the retina or lens. A normal red reflex is essential in ruling out serious conditions such as retinoblastoma, cataracts, or other eye abnormalities.
Choice B rationale:
An abnormal red reflex, especially if it is not uniform and brilliant, could indicate underlying eye conditions and would require referral to an ophthalmologist for further evaluation. However, in this scenario, the description provided indicates a normal finding, making this choice incorrect.
Choice C rationale:
A uniform red reflex does not suggest a possible visual defect that requires vision screening. A normal red reflex indicates the absence of significant visual abnormalities, making this choice incorrect.
Choice D rationale:
Small hemorrhages in the eye would not present as a brilliant, uniform red reflex. Hemorrhages typically appear as dark spots or patches and would be an abnormal finding requiring further evaluation. This choice is incorrect in the context of the described scenario.
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