The health-care provider prescribes phytonadione (AquaMEPHYTON) 250 mcg IM to be administered to an infant within 1 hour of admission to the nursery. A 0.5 ml ampule labeled 2 mg in 1 ml is available. The nurse should administer how many ml? (Enter numeric value only. If rounding is required, round to the nearest hundredth.)
The Correct Answer is ["0.13"]
To calculate the volume of phytonadione (AquaMEPHYTON) to be administered, we can use the following formula:
Volume (mL) = Desired Dose (mg) / Concentration (mg/mL)
First, let's convert the desired dose from micro-grams to milligrams:
250 mcg x (1 mg / 1000 mcg) = 0.25 mg
Then, plug in the values into the formula:
Volume (mL) = 0.25 mg / 2 mg/mL
Calculating the result:
Volume (mL) = 0.125 mL
Rounding to the nearest hundredth, the nurse should administer 0.13 mL of phytonadione (AquaMEPHYTON).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
First, calculate the loading dose:
Loading dose = 60 units/kg x 90 kg = 5400 units
Since the maximum loading dose is 4,000 units, the nurse should administer 4,000 units.
Next, calculate the volume to administer:
Volume = Desired Dose (units) / Concentration (units/mL)
Volume = 4,000 units / 5,000 units/mL
Volume = 0.8 mL
Therefore, the nurse should administer 0.8 mL of heparin.
Correct Answer is ["499"]
Explanation
Calculating the Lactated Ringer's Infusion Rate
Step 1: Convert pounds to kilograms:
110 pounds x (1 kg / 2.20462 pounds) ≈ 49.9 kg
Step 2: Calculate the total fluid requirement for 24 hours using the Parkland formula:
Total Fluid (mL) = 4 mL/kg/%TBSA x Body Weight (kg) x %TBSA
Total Fluid = 4 mL/kg/%TBSA x 49.9 kg x 40%
Total Fluid = 7984 mL
Step 3: Calculate the fluid volume for the first 8 hours:
First 8 Hours Fluid = Total Fluid / 2
First 8 Hours Fluid = 7984 mL / 2
First 8 Hours Fluid = 3992 mL
Step 4: Calculate the infusion rate for the first 8 hours:
Infusion Rate (mL/hour) = First 8 Hours Fluid / 8 hours
Infusion Rate = 3992 mL / 8 hours
Infusion Rate ≈ 499 mL/hour
Therefore, the nurse should set the infusion pump to deliver approximately 499 mL/hour during the first 8 hours.
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