A nurse is preparing to administer cefazolin 40 mg/ke/day IV Golus divided in equal doses every 12 hr to neonate who weighs 5 kg. Available is cefazolin injection 330 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 ["0.3"]
Calculate the Total Daily Dose:
Dose: 40 mg/kg/day
Weight: 5 kg
Total Daily Dose: 40 mg/kg/day x 5 kg = 200 mg/day
Calculate the Dose Per Administration:
The dose is divided equally every 12 hours, meaning twice a day.
Dose Per Administration: 200 mg/day / 2 doses/day = 100 mg/dose
Calculate the Volume to Administer:
Available Concentration: 330 mg/mL
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Volume (mL) = 100 mg / 330 mg/mL
Volume (mL) ≈ 0.303 mL
Round to the Nearest Tenth:
0.3 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["167"]
Explanation
Understanding the Problem
Volume: 250 mL of 0.9% sodium chloride
Infusion Time: 90 minutes
Desired Rate: mL/hr
Step 1: Convert Infusion Time to Hours
Minutes in an Hour: 60 minutes
Infusion Time in Hours: 90 minutes / 60 minutes/hour = 1.5 hours
Step 2: Calculate the Infusion Rate in mL/hr
Volume: 250 mL
Infusion Time: 1.5 hours
Infusion Rate: 250 mL / 1.5 hours = 166.666... mL/hr
Step 3: Round to the Nearest Whole Number
The calculated rate is 166.666... mL/hr.
Rounded to the nearest whole number: 167 mL/hr
Answer: 167 mL/hr
Correct Answer is ["1.9"]
Explanation
Order: Dexamethasone 0.5 mg/kg/day IM, divided equally every 6 hours
Client Weight: 132 lbs
Available Solution: Dexamethasone 4 mg/mL
Desired Dose: mL per dose
Step 1: Convert Client Weight to Kilograms (kg)
1 kg = 2.2 lbs
Client Weight in kg: 132 lbs / 2.2 lbs/kg = 60 kg
Step 2: Calculate the Total Daily Dose
Ordered Dose: 0.5 mg/kg/day
Client Weight: 60 kg
Total Daily Dose: 0.5 mg/kg/day x 60 kg = 30 mg/day
Step 3: Determine the Number of Doses per Day
Doses are given every 6 hours.
Hours in a Day: 24 hours
Number of Doses: 24 hours / 6 hours/dose = 4 doses
Step 4: Calculate the Dose per Administration
Total Daily Dose: 30 mg/day
Number of Doses: 4 doses
Dose per Administration: 30 mg / 4 doses = 7.5 mg/dose
Step 5: Calculate the Volume to Administer per Dose
Dose per Administration: 7.5 mg
Concentration: 4 mg/mL
Volume to Administer: 7.5 mg / 4 mg/mL = 1.875 mL
Step 6: Round to the Nearest Tenth
The calculated volume is 1.875 mL.
Rounded to the nearest tenth: 1.9 mL
Answer: 1.9 mL
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