A child with growth failure is receiving somatropin (rDNA origin) 1.25 mg subcutaneously (subQ) daily. The nurse reconstitutes the vial with 5 mL of bacteriostatic water for injection to yield a solution concentration of 5 mg/mL. How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest hundredth.)
The Correct Answer is ["0.25"]
Here's how to calculate the volume (mL) the nurse should administer for somatropin:
1. We know the following:
Prescribed dose: 1.25 mg somatropin (given)
Concentration after reconstitution: 5 mg/mL (given)
2. We need to find the volume (mL) to administer for the prescribed dose (1.25 mg) considering the concentration (5 mg/mL) of the reconstituted solution.
Volume to administer (mL): Dose (mg) / Concentration (mg/mL)
Volume to administer (mL): 1.25 mg / 5 mg/mL
Volume to administer (mL) = 0.25 mL (round to nearest hundredth)
Therefore, the nurse should administer 0.25 mL of the reconstituted somatropin solution subcutaneously.
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Related Questions
Correct Answer is ["0.8"]
Explanation
Here's how to calculate the volume (mL) of epoetin alfa the nurse should administer:
1. We know the following:
Prescribed dose: 8,200 units epoetin alfa (given)
Vial concentration: 10,000 units/mL (given from the label)
2. We need to find the volume (mL) to administer for the prescribed dose (8,200 units) considering the concentration (10,000 units/mL).
Volume to administer (mL) = Dose (units) / Concentration (units/mL)
Volume to administer (mL) = 8,200 units / 10,000 units/mL
Volume to administer (mL) = 0.82 mL (round to nearest tenth)
Therefore, the nurse should administer 0.8 mL of epoetin alfa subcutaneously.
Correct Answer is ["0.8"]
Explanation
Here's how to calculate the volume the nurse should administer:
Concentration of epoetin alfa: 10,000 units/mL (given on the vial label)
Prescribed dose: 8,200 units
We need to find the volume (in mL) that contains the prescribed dose (8,200 units) of epoetin alfa.
Dosage calculation:
Volume to administer (mL) = Dose (units) / Concentration (units/mL)
Volume to administer (mL) = 8,200 units / 10,000 units/mL
Volume to administer (mL) = 0.82 mL (round to nearest tenth as requested)
Therefore, the nurse should administer 0.8 mL.
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