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 ["15"]
Explanation
First, we need to convert the child’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So,
Weightinkg = Weightinpounds / 2.20462 = 2.2046266 ≈ 29.94kg
The prescribed dosage is 80 mg/kg/day, so the total daily dosage in mg would be:
Dailydosageinmg = Dosageperkg × Weightinkg = 80mg/kg × 29.94kg ≈ 2395.2mg
The medication is to be administered in divided doses every 12 hours, so the dosage per dose in mg would be:
Dosageperdoseinmg = Dailydosageinmg/2 = 2395.2mg/2 ≈ 1197.6mg
The medication is available in a concentration of 400 mg/5 mL. Therefore, the volume to be administered per dose in mL would be:
VolumeinmL = Dosageperdoseinmg / Concentrationinmg/mL = 1197.6mg / 80mg/mL ≈ 14.97mL
So, the nurse should administer approximately 15 mL of Amoxicillin for Oral Suspension, USP per dose. Please note that this is a rounded value and the exact volume would be 14.97 mL.
Correct Answer is ["2.4"]
Explanation
Rationale: Step 1 is to identify the ordered dose and the available dosage strength Ordered Dose: 0.6 mg Available Strength: 500 mcg / 2 mL
Step 2 is to convert the ordered dose from milligrams (mg) to micrograms (mcg) Conversion factor = 1000 mcg per 1 mg Ordered dose in mcg = 0.6 × 1000 0.6 × 1000 = 600 Ordered dose in mcg = 600 mcg
Step 3 is to calculate the volume to administer in milliliters (mL) Volume to administer = (Ordered Dose ÷ Available Dose) × Available Volume Volume to administer = (600 ÷ 500) × 2 600 ÷ 500 = 1.2 1.2 × 2 = 2.4 Volume to administer = 2.4 mL
Step 4 is to round to the nearest tenth 2.4 = 2.4 Answer: 2.4
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