The healthcare provider prescribes interferon beta-1b 0.0625 mg SUBQ every other day for a client with multiple sclerosis. The nurse reconstitutes the single-use vial of powder labeled, "0.3 mg with 1.2 mL of sterile water." How many mL should the nurse administer to the client? (Enter the numerical value only. If rounding is required, round to the nearest hundredth.)

Answer and Explanation

The Correct Answer is ["0.25"]

Here's how to calculate the volume the nurse should administer after reconstituting the medication:

Reconstitution:

The medication vial is labeled "0.3 mg with 1.2 mL of sterile water." This means adding 1.2 mL of diluent will result in a total volume of 1.2 mL solution.

Important Note:

The concentration of the medication after reconstitution is not explicitly provided on the label.

We cannot directly calculate the volume to administer based solely on the prescribed dose (0.0625 mg) and the unknown concentration.

Scenario:

In real-world practice, nurses rely on the medication information sheet or the manufacturer's label for dilution instructions and the final concentration after reconstitution.

This information is crucial for calculating the accurate volume to administer the prescribed dose.

Assuming the medication information sheet specifies:

After reconstitution with 1.2 mL diluent, the final concentration is 0.25 mg/mL.

Calculation (based on the assumed concentration):

Prescribed dose: 0.0625 mg

Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)

Volume to administer (mL) = 0.0625 mg / 0.25 mg/mL

Volume to administer (mL) = 0.25 mL (round to nearest hundredth)

Therefore, based on the assumed concentration after reconstitution (0.25 mg/mL), the nurse should administer 0.25 mL to the client.

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Free Nursing Study Resources

Correct Answer is ["4.7"]

Explanation

Here's how to calculate the volume (mL) of the reconstituted ampicillin solution the nurse should administer for each dose:

1. We know the following:

Prescribed dose: 140 mg ampicillin (given)

Vial information:

Contains 250 mg ampicillin powder (given)

Reconstituted with 8.3 mL sterile normal saline (given)

Yields a final concentration of 30 mg/mL (given)

2. We need to find the volume (mL) of the reconstituted solution containing the prescribed dose (140 mg) considering the final concentration (30 mg/mL).

Steps:

a. Don't consider the initial volume (8.3 mL) of sterile normal saline. The final concentration (30 mg/mL) refers to the concentration in the diluted solution after adding the saline.

b. Use the following formula:

Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)

c. Plug in the values:

Volume to administer (mL) = 140 mg / 30 mg/mL

Volume to administer (mL) = 4.67 mL (round to nearest tenth)

Therefore, the nurse should administer approximately 4.7 mL of the reconstituted ampicillin solution intravenously every 8 hours for the child.

Correct Answer is ["21"]

Explanation

Here's how to calculate the infusion rate (gtt/min) for the nurse to regulate:

1. We know:

Total volume of D5W solution: 2 L (liters)

Infusion time: 24 hours

IV administration set gtt/mL: 15 gtt/mL

2. We need to find the infusion rate in gtt/min.

Steps:

a. Convert liters to milliliters (mL) for better calculation:

1 liter = 1000 mL

Total volume (mL) = 2 L * 1000 mL/L

Total volume (mL) = 2000 mL

b. Convert infusion time from hours to minutes:

Infusion time (minutes) = Infusion time (hours) x Minutes per hour

Infusion time (minutes) = 24 hours * 60 minutes/hour

Infusion time (minutes) = 1440 minutes

c. Calculate the total volume of solution to be infused per minute:

Volume rate (mL/min) = Total volume (mL) / Infusion time (minutes)

Volume rate (mL/min) = 2000 mL / 1440 minutes

Volume rate (mL/min) = 1.389 mL/min (round to nearest hundredth)

d. Finally, calculate the infusion rate in gtt/min:

Infusion rate (gtt/min) = Volume rate (mL/min) x gtt/mL

Infusion rate (gtt/min) = 1.389 mL/min * 15 gtt/mL

Infusion rate (gtt/min) = 20.835 gtt/min (round to nearest whole number as requested)

Therefore, the nurse should regulate the infusion at approximately 21 gtt/min

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["4.7"]

Explanation

The healthcare provider prescribes 2 L of 5% dextrose in water (DW) IV to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

Correct Answer is ["21"]

Explanation

A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

he nurse is preparing to administer methylprednisolone 40 mg IV. The medication vial is labeled, "125 mg per 2 mL. How many mLs of medication should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest hundredth

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The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

The healthcare provider prescribes a liter of normal saline IV to be infused over 9 hours for a client who is NPO. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number).

A client with deep vein thrombosis (DVT) is receiving a continuous IV infusion of heparin sodium 20,000 units in 5% dextrose injection 500 mL at the rate of 25 mL/hour. How many units of heparin should the client receive in 12 hours? (Enter numeric value only.)

A premature infant with a birth weight of 1,200 grams is receiving beractant 120 mg intratracheal every 6 hours. Single use vials of beractant are labeled, "100 mg/4 mL." How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)