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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 ["0.1"]

Explanation

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

1. Dose of cyanocobalamin (vitamin B12): 100 mcg

2. Concentration of cyanocobalamin in the vial: 1 mg/mL (given on the vial label)

We need to find the volume (in mL) that contains the prescribed dose (100 mcg) of cyanocobalamin.

Calculation:

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

Note: Since both the medication dose and concentration are given in mcg units, we can directly perform the calculation without converting units.

Volume to administer (mL) = 100 mcg / 1 mg/mL

Conversion:

1 mg is equal to 1000 mcg. Therefore, 1 mg/mL is the same as 1000 mcg/mL.

Volume to administer (mL) = 100 mcg / (1000 mcg/mL)

Volume to administer (mL) = 0.1 mL (round to nearest tenth as requested)

Therefore, the nurse should administer approximately 0.1 mL of the cyanocobalamin injection.

Correct Answer is ["1"]

Explanation

Here's the breakdown:

Prescribed dose: 2 mg midazolam (given)

Vial concentration: 4 mg/2 mL (label)

We need to find the volume containing the 2 mg dose considering the concentration.

Calculation:

Volume (mL) = Dose (mg) / (Concentration (mg/mL) / 2)

We divide the concentration by 2 because we need the volume that delivers 2 mg (half the concentration).

Volume (mL) = 2 mg / (4 mg/mL / 2)

Volume (mL) = 2 mg / 2 mg/mL

Volume (mL) = 1 mL

Therefore, the nurse should administer 1 mL of midazolam to deliver the prescribed dose of 2 mg.

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