A nurse is caring for a 1-month-old infant who weighs 3500g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do 3 m anot use a trailing zero.)
The Correct Answer is ["175"]
Step 1: Convert the weight of the infant from grams to kilograms.
1 kilogram = 1000 grams
So, 3500 grams = 3500/1000 = 3.5 kilograms
Step 2: Calculate the dosage based on the infant's weight and the prescribed dose.
Dosage = Weight (kg) x Prescribed dose (mg/kg)
Dosage = 3.5 kg x 50 mg/kg
Dosage = 175 mg
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["100"]
Explanation
Here's how to calculate the IV pump rate:
1. Calculate the total infusion time in hours:
30 minutes / 60 minutes/hour = 0.5 hours
2. Calculate the infusion rate:
Total volume (mL) / Infusion time (hours) = Infusion rate (mL/hr)
50 mL / 0.5 hours = 100 mL/hr
Correct Answer is D
Explanation
A) 0.20 mg: Although this representation of two-tenths of a milligram is correct, the trailing zero (the "0" after the decimal) is not typically necessary and can potentially lead to confusion. Standard practice generally omits trailing zeros to prevent errors in medication administration.
B) 2.0 mg: This represents two milligrams, not two-tenths of a milligram. The magnitude of the dose is significantly different from what is intended, making this option incorrect for representing two-tenths of a milligram.
C) .2 mg: This format lacks a leading zero before the decimal point, which can lead to misinterpretation or errors. The absence of the leading zero may cause confusion, especially in situations where decimal points are misread.
D) 0.2 mg: This is the most appropriate and clear way to write two-tenths of a milligram. It includes the leading zero before the decimal point, which helps to avoid confusion and accurately communicates the dose. This format adheres to standard practices for dosing precision and clarity.
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