The nurse is reconstituting a powdered medication that is labeled, "Add 2.5 mL of normal saline to make 1 gram per mL." The dient's prescription is for 500 mg of the medication. How many mL should the nurse administer to this client? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["0.5"]

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

1. Reconstitution and Concentration:

The medication label states adding 2.5 mL of normal saline will make a solution with a concentration of 1 gram per mL. This means after reconstituting, each 1 mL of the solution will contain 1 gram of medication.

2. Dose conversion:

The client's prescription is for 500 mg. We need to convert it to grams since the concentration is in grams per mL.

Conversion: 1 gram (g) = 1000 milligrams (mg)

Prescribed dose (g) = 500 mg / 1000 mg/g

Prescribed dose (g) = 0.5 g (round to nearest tenth)

3. Calculate the volume to administer:

We know the concentration after reconstitution (1 gram/mL) and the desired dose in grams (0.5 g).

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

Volume to administer (mL) = 0.5 g / 1 g/mL

Volume to administer (mL) = 0.5 mL (round to nearest tenth as requested)

Therefore, the nurse should administer approximately 0.5 mL of the reconstituted medication to the client.

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Correct Answer is ["200"]

Explanation

Here's why:

The entire dose (400 mg) is contained within the 200 mL bag.

The information doesn't suggest the bag needs to be emptied completely during the infusion.

Our goal is to deliver the 400 mg dose over the 1-hour infusion period.

Therefore, the nurse should program the infusion pump to deliver the entire volume of the bag (200 mL) containing the medication over the 1-hour timeframe.

Calculation:

Volume to deliver (mL/hr) = Total volume of bag (mL) / Infusion time (hours)

Volume to deliver (mL/hr) = 200 mL / 1 hour

Volume to deliver (mL/hr) = 200 mL/hr

Therefore, the nurse should program the infusion pump to deliver 200 mL/hr.

Correct Answer is ["111"]

Explanation

Here's how to calculate the rate for the infusion pump:

Total volume to infuse: 1 liter (given)

Infusion time: 9 hours (given)

We need to find the volume delivered per hour (mL/hour) considering the total volume and infusion time.

Volume conversion: Since the volume is given in liters, convert it to mL:

1 liter * 1000 mL/liter = 1000 mL

Infusion rate (mL/hour):

Infusion rate (mL/hour) = Total volume (mL) / Infusion time (hours)

Infusion rate (mL/hour) = 1000 mL / 9 hours

Infusion rate (mL/hour) = 111.11 mL/hour (round to nearest tenth)

Therefore, the nurse should program the infusion pump to deliver approximately 111 mL/hour.

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Naxlex Comprehensive Predictor Exams

A client receives a prescription for IV ciprofloxacin 400 mg every 12 hours, which is to be infused over an hour. The IV bag contains ciprofloxacin 400 mg in dextrose 5% in water (DSW) 200 mL. How many mL/hr should the nurse program the infusion pump to deliver? (Enter numerical value only.)

Correct Answer is ["200"]

Explanation

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).

Correct Answer is ["111"]

Explanation

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The nurse is preparing a dose of ketorolac 12 mg IV using a 1 mL vial containing 30 mg/mL. How many mL should the nurse administer? (Enter numerical value only.)

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The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

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