A client who weighs 154 lb receives a prescription for epoetin alfa 50 units/kg SUBQ 3 times a week. The medication is available in 2,000 units/mL vial. How many mL should the nurse administer with each dose? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.29"]
Here's how to calculate the volume (mL) of epoetin alfa the nurse should administer for one dose:
1. Convert client weight to kilograms (kg):
Weight (kg) = Weight (pounds) / 2.205
Weight (kg) = 126 pounds / 2.205
Weight (kg) = 57.14 kg (round to two decimal places for better accuracy)
2. Calculate the dose per administration based on weight and prescribed dose:
Dose per administration (units) = Prescribed dose (units/kg) x Weight (kg)
Dose per administration (units) = 50 units/kg x 57.14 kg
Dose per administration (units) = 2857 units (round to nearest whole number)
3. Calculate the volume (mL) to administer for one dose:
Volume (mL) = Dose per administration (units) / Concentration (units/mL)
Concentration (units/mL) = 10,000 units/mL (given on the vial label)
Volume (mL) = 2857 units / 10,000 units/mL
Volume (mL) = 0.2857 mL (round to nearest hundredth as requested)
Therefore, the nurse should administer approximately 0.29 mL of epoetin alfa for one dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.5"]
Explanation
Here's how to calculate the number of levothyroxine tablets the nurse should administer:
1. We know:
Prescribed dose: 0.075 mg of levothyroxine (given)
Tablet strength: 50 mcg per tablet (given on the medication label)
2. We need to find:
Number of tablets to administer
3. Calculation:
To find the number of tablets, divide the prescribed dose (in milligrams) by the strength of each tablet (in milligrams).
Number of tablets = Prescribed dose (mg) / Tablet strength (mg/tablet)
Number of tablets = 0.075 mg / 50 mcg/tablet
Important note: We need to convert the tablet strength from mcg to mg for consistency in units. Remember, 1 mg is equal to 1000 mcg.
Tablet strength (mg/tablet) = 50 mcg/tablet / 1000 mcg/mg
Tablet strength (mg/tablet) = 0.05 mg/tablet
Now, plug in the converted values:
Number of tablets = 0.075 mg / 0.05 mg/tablet
Number of tablets = 1.5 (round to nearest tenth as requested)
Therefore, the nurse should administer 1.5 tablets.
Correct Answer is ["0.9"]
Explanation
Here's how to calculate the total volume (mL) the nurse should administer for the combined medication dose
1. Calculate the volume for each medication:
Hydromorphone:
Dose: 4 mg (given)
Concentration: 10 mg/mL (given)
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Volume (mL) = 4 mg / 10 mg/mL
Volume (mL) = 0.4 mL
Hydroxyzine:
Dose: 25 mg (given)
Concentration: 50 mg/mL (given)
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Volume (mL) = 25 mg / 50 mg/mL
Volume (mL) = 0.5 mL
2. Add the volumes for each medication to find the total volume:
Total volume (mL) = Volume of hydromorphone (mL) + Volume of hydroxyzine (mL)
Total volume (mL) = 0.4 mL + 0.5 mL
Total volume (mL) = 0.9 mL (round to nearest tenth)
Therefore, the nurse should administer a total of 0.9 mL.
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