The healthcare provider prescribes penicillin V potassium 650,000 units IM. The available vial is labeled, "Penicillin V potassium 500,000 units/mL." How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.3"]
Calculation:
Formula:
Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL)
Desired dose = 650,000 units
Available concentration = 500,000 units/mL
Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL)
= 650,000 units / 500,000 units/mL
= 1.3 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.7"]
Explanation
Desired dose = 1,000,000 units
Available concentration = 1,200,000 units / 2 mL
Calculate the volume to administer:
Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL)
= 1,000,000 units / (1,200,000 units / 2 mL)
= 1,000,000/600,000 mL
≈ 1.666... mL
Round to the nearest tenth:
Rounded volume = 1.7 mL
Correct Answer is ["500"]
Explanation
Total volume to be infused = 250 mL
Convert the infusion time from minutes to hours:
Infusion time (hours) = Infusion time (minutes) / 60 minutes/hour
= 30 minutes / 60 minutes/hour
= 0.5 hours
Calculate the infusion rate in mL per hour:
Infusion rate (mL/hour) = Total volume (mL) / Infusion time (hours)
= 250 mL / 0.5 hours
= 500 mL/hour
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