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 ["34"]
Explanation
Convert the Client's Weight from Pounds to Kilograms:
1 kg = 2.205 lbs
Weight in kg = 250 lbs / 2.205 lbs/kg
Weight in kg ≈ 113.38 kg
Calculate the Dobutamine Dose in mcg/min:
Dose = 5 mcg/kg/min x 113.38 kg
Dose ≈ 566.9 mcg/min
Convert the Dobutamine Dose from mcg/min to mg/min:
1 mg = 1000 mcg
Dose in mg/min = 566.9 mcg/min / 1000 mcg/mg
Dose in mg/min ≈ 0.5669 mg/min
Calculate the Dobutamine Dose in mg/hr:
Dose in mg/hr = 0.5669 mg/min x 60 min/hr
Dose in mg/hr ≈ 34.014 mg/hr
Calculate the Infusion Rate in mL/hr:
Available concentration = 250 mg / 250 mL = 1 mg/mL
Infusion Rate (mL/hr) = Dose in mg/hr / Concentration (mg/mL)
Infusion Rate (mL/hr) = 34.014 mg/hr / 1 mg/mL
Infusion Rate (mL/hr) ≈ 34.014 mL/hr
Round to the Nearest Whole Number:
34 mL/hr
Correct Answer is ["38"]
Explanation
Convert Grams to Milligrams:
The available lidocaine is 1 gram (g).
We need to convert this to milligrams (mg) because the dose is in mg/min.
There are 1000 milligrams in 1 gram (1 g = 1000 mg).
So, 1 g x 1000 mg/g = 1000 mg
Calculate the Lidocaine Concentration in mg/mL:
Available lidocaine: 1000 mg
Total volume: 250 mL
Concentration: 1000 mg / 250 mL = 4 mg/mL
Calculate the Lidocaine Dose in mg/hr:
Dose: 2.5 mg/min
There are 60 minutes in 1 hour.
Dose in mg/hr: 2.5 mg/min x 60 min/hr = 150 mg/hr
Calculate the Infusion Rate in mL/hr:
Concentration: 4 mg/mL
Dose in mg/hr: 150 mg/hr
Infusion Rate (mL/hr) = Dose in mg/hr / Concentration (mg/mL)
Infusion Rate (mL/hr) = 150 mg/hr / 4 mg/mL = 37.5 mL/hr
Round to the Nearest Whole Number:
38 mL/hr
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