A nurse is preparing to administer cefotaxime 100 mg/kg /IV bolus divided in equal doses every 8 hr to a toddler who weighs 26.4 lb. Available is cefotaxime injection 300 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 ["1.3"]
Order: Cefotaxime 100 mg/kg IV bolus, divided into equal doses every 8 hours
Toddler Weight: 26.4 lb
Available Solution: Cefotaxime injection 300 mg/mL
Desired Dose: mL per dose
Step 1: Convert Toddler Weight to Kilograms (kg)
1 kg = 2.2 lbs
Toddler Weight in kg: 26.4 lbs / 2.2 lbs/kg = 12 kg
Step 2: Calculate the Total Daily Dose
Ordered Dose: 100 mg/kg
Toddler Weight: 12 kg
Total Daily Dose: 100 mg/kg x 12 kg = 1200 mg
Step 3: Determine the Number of Doses per Day
Doses are given every 8 hours.
Hours in a Day: 24 hours
Number of Doses: 24 hours / 8 hours/dose = 3 doses
Step 4: Calculate the Dose per Administration
Total Daily Dose: 1200 mg
Number of Doses: 3
Dose per Administration: 1200 mg / 3 doses = 400 mg/dose
Step 5: Calculate the Volume to Administer per Dose
Dose per Administration: 400 mg
Concentration: 300 mg/mL
Volume to Administer: 400 mg / 300 mg/mL = 1.333 mL
Step 6: Round to the Nearest Tenth
The calculated volume is 1.333 mL.
Rounded to the nearest tenth: 1.3 mL
Answer: 1.3 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["6.5"]
Explanation
Convert the Client's Weight from Pounds to Kilograms:
1 kg = 2.205 lbs
Weight in kg = 143 lbs / 2.205 lbs/kg
Weight in kg ≈ 64.85 kg
Calculate the Total Dose of Cyclosporine Needed:
Dose = 5 mg/kg x 64.85 kg
Dose ≈ 324.25 mg
Calculate the Volume of Cyclosporine to Administer:
Available concentration = 50 mg/mL
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
Volume (mL) = 324.25 mg / 50 mg/mL
Volume (mL) ≈ 6.485 mL
Round to the Nearest Tenth:
6.5 mL
Correct Answer is ["1.5"]
Explanation
Understanding the Problem
Order: Midazolam 0.03 mg/kg IM
Client Weight: 110 lbs
Available Solution: Midazolam 1 mg/mL
Desired Dose: mL to administer
Step 1: Convert Client Weight to Kilograms (kg)
1 kg = 2.2 lbs
Client Weight in kg: 110 lbs / 2.2 lbs/kg = 50 kg
Step 2: Calculate the Total Dose
Ordered Dose: 0.03 mg/kg
Client Weight: 50 kg
Total Dose: 0.03 mg/kg x 50 kg = 1.5 mg
Step 3: Calculate the Volume to Administer
Total Dose: 1.5 mg
Concentration: 1 mg/mL
Volume: 1.5 mg / 1 mg/mL = 1.5 mL
Step 4: Round to the Nearest Tenth
The calculated volume is 1.5 mL, which is already to the nearest tenth.
Answer: 1.5 mL
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