The nurse is preparing a client's dose of an IM analgesic in a single syringe. The prescription is hydromorphone 4 mg and hydroxyzine 25 mg. The hydromorphone is available in a 10 mg/mL ampule, and the hydroxyzine is available in a 50 mg/mL vial. How many total mL should the nurse administer? (Enter the numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.9"]
Here's how to calculate the total volume the nurse should administer for the combined medication:
1. Calculate the volume of hydromorphone:
Dose: 4 mg
Concentration: 10 mg/mL (from ampule label)
Volume (mL) for hydromorphone = Dose (mg) / Concentration (mg/mL)
Volume (mL) for hydromorphone = 4 mg / 10 mg/mL
Volume (mL) for hydromorphone = 0.4 mL
2. Calculate the volume of hydroxyzine:
Dose: 25 mg
Concentration: 50 mg/mL (from vial label)
Volume (mL) for hydroxyzine = Dose (mg) / Concentration (mg/mL)
Volume (mL) for hydroxyzine = 25 mg / 50 mg/mL
Volume (mL) for hydroxyzine = 0.5 mL
3. Add the volumes for each medication to find the total volume:
Total volume = Volume (mL) for hydromorphone + Volume (mL) for hydroxyzine
Total volume = 0.4 mL + 0.5 mL
Total volume = 0.9 mL (round to nearest tenth as requested)
Therefore, the nurse should administer a total of 0.9 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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 ["0.1"]
Explanation
Here's how to calculate the volume the nurse should administer:
1. Dose of cyanocobalamin (vitamin B12): 100 mcg
2. Concentration of cyanocobalamin in the vial: 1 mg/mL (given on the vial label)
We need to find the volume (in mL) that contains the prescribed dose (100 mcg) of cyanocobalamin.
Calculation:
Volume to administer (mL) = Dose (mcg) / Concentration (mcg/mL)
Note: Since both the medication dose and concentration are given in mcg units, we can directly perform the calculation without converting units.
Volume to administer (mL) = 100 mcg / 1 mg/mL
Conversion:
1 mg is equal to 1000 mcg. Therefore, 1 mg/mL is the same as 1000 mcg/mL.
Volume to administer (mL) = 100 mcg / (1000 mcg/mL)
Volume to administer (mL) = 0.1 mL (round to nearest tenth as requested)
Therefore, the nurse should administer approximately 0.1 mL of the cyanocobalamin injection.
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