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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.4"]
Explanation
here's how to calculate the volume (mL) of ketorolac the nurse should administer:
1. Dose of ketorolac to administer:
Dose = 12 mg (given)
2. Concentration of ketorolac in the vial:
Concentration = 30 mg/mL (given)
3. We need to find the volume (mL) containing the prescribed dose (12 mg) considering the concentration (30 mg/mL) in the vial.
Volume to administer (mL): Dose (mg) / Concentration (mg/mL)
Volume to administer (mL): 12 mg / 30 mg/mL
Volume to administer (mL) = 0.4 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 0.4 mL of ketorolac intravenously.
Correct Answer is ["0.64"]
Explanation
Here's the calculation:
Prescribed dose: 40 mg methylprednisolone
Medication vial concentration: 125 mg per 2 mL (given on the vial label)
We need to find the volume (mL) containing the prescribed dose (40 mg) of methylprednisolone.
Calculation:
Concentration adjustment: The concentration is given in mg per 2 mL. To calculate the medication needed for the 40 mg dose, we need the concentration in mg/mL.
Concentration (mg/mL) = Total mg / Volume (mL)
Concentration (mg/mL) = 125 mg / 2 mL
Concentration (mg/mL) = 62.5 mg/mL
Volume to administer:
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
Volume to administer (mL) = 40 mg / 62.5 mg/mL
Volume to administer (mL) = 0.64 mL (round to nearest hundredth)
Therefore, the nurse should administer 0.64 mL of methylprednisolone.
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