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The healthcare provider prescribes ganciclovir 375 mg IV every 12 hour to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many drops/minute should the nurse regulate the gravity infusion using a drip chamber that delivers 10 drops/mL? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Answer and Explanation

The Correct Answer is ["17"]

Let’s calculate the solution step by step:

Calculate the Total Drops in the IV Bag:

The total number of drops in the IV bag can be calculated using the formula:

Total drops = Volume in mL × Drops per mL

Substituting the given values:

Total drops = 150mL × 10drops/mL = 1500drops

Calculate the Rate in Drops/Minute:

The rate in drops per minute can be calculated using the formula:

Rate in drops/minute = Total drops​ / Time in minutes

Substituting the given values:

Rate in drops/minute = 1500drops/90minutes ​≈ 16.67drops/minute

Since the problem asks for the rate to be rounded to the nearest whole number if necessary, the final rate is 17 drops/minute.


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Related Questions

Correct Answer is ["18"]

Explanation

Here's how to calculate the infusion rate (mL/hour) for the nurse to administer furosemide 60 mg IV every 12 hours:

1. Furosemide dose per administration:

Dose = 60 mg (given)

2. Dosage frequency (conversion from hours to minutes):

Frequency (minutes) = 12 hours/dose * 60 minutes/hour

Frequency (minutes) = 720 minutes/dose

3. Medication concentration:

Concentration = 10 mg/mL (given)

4. Infusion duration:

Duration = 20 minutes (given)

5. We need to find the total volume (mL) of the medication to be delivered and then convert that volume to a rate per hour (mL/hour).

Steps:

a. Calculate the volume to be infused (mL):

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

Volume (mL) = 60 mg / 10 mg/mL

Volume (mL) = 6 mL

b. Convert infusion duration from minutes to hours:

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

Infusion time (hours) = 20 minutes / 60 minutes/hour

Infusion time (hours) = 1/3 hour

c. Calculate the infusion rate (mL/hour):

Infusion rate (mL/hour) = Volume (mL) / Infusion time (hours)

Infusion rate (mL/hour) = 6 mL / (1/3 hour)

Infusion rate (mL/hour) = 18 mL/hour

Therefore, the nurse should set the infusion pump to deliver approximately 18 mL/hour.

Correct Answer is ["0.25"]

Explanation

Here's how to calculate the volume (mL) the nurse should administer for somatropin:

1. We know the following:

Prescribed dose: 1.25 mg somatropin (given)

Concentration after reconstitution: 5 mg/mL (given)

2. We need to find the volume (mL) to administer for the prescribed dose (1.25 mg) considering the concentration (5 mg/mL) of the reconstituted solution.

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

Volume to administer (mL): 1.25 mg / 5 mg/mL

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

Therefore, the nurse should administer 0.25 mL of the reconstituted somatropin solution subcutaneously.

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