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The nurse is initiating a prescription for IV dextrose 2.5% in 0.45% sodium chloride (D, 0.5% NS) at 45 mL/hour for a child with dehydration. The nurse attaches a volume-control administration set with a microdrop chamber to the bag of solution. How many microdrops/minute should the nurse regulate the infusion? (Enter the numerical value only. If rounding is required, round to the nearest whole number.)
Answer and Explanation

The Correct Answer is ["45"]

The infusion rate is given as 45 mL/hour. 

We know that 1 hour is 60 minutes, so we can convert the rate to mL/minute:

Rate in mL/minute = Rate in mL/hour   /divide by   60minutes/hour 

​= 45mL/hour   /  60minutes/hour  ​≈ 0.75mL/minute

The volume-control administration set with a microdrop chamber delivers 60 microdrops/mL. 

Therefore, the rate in microdrops/minute would be:

Rate in microdrops/minute = Rate in mL/minute×Drops per mL = 0.75mL/minute × 60microdrops/mL = 45microdrops/minute

However, the question asks to round the answer to the nearest whole number. 

So, the nurse should regulate the infusion to deliver 45 microdrops/minute.


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Related Questions

Correct Answer is ["15"]

Explanation

First, we need to convert the child’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So,

Weightinkg = Weightinpounds / 2.20462 ​= 2.2046266​ ≈ 29.94kg

The prescribed dosage is 80 mg/kg/day, so the total daily dosage in mg would be:

Dailydosageinmg = Dosageperkg × Weightinkg = 80mg/kg × 29.94kg ≈ 2395.2mg

The medication is to be administered in divided doses every 12 hours, so the dosage per dose in mg would be:

Dosageperdoseinmg = Dailydosageinmg/2 ​= 2395.2mg/2 ​≈ 1197.6mg

The medication is available in a concentration of 400 mg/5 mL. Therefore, the volume to be administered per dose in mL would be:

VolumeinmL = Dosageperdoseinmg / Concentrationinmg/mL ​ = 1197.6mg / 80mg/mL ​ ≈ 14.97mL

So, the nurse should administer approximately 15 mL of Amoxicillin for Oral Suspension, USP per dose. Please note that this is a rounded value and the exact volume would be 14.97 mL.

Correct Answer is ["10"]

Explanation

First, we need to calculate the total amount of medication that will be administered in a day.

The prescription is for 250 mg every 8 hours, which means three doses per day (since there are 24 hours in a day).

Therefore, the total daily dosage is 250 mg x 3 = 750 mg.

Next, we need to find out how many milligrams are in the entire bottle.

Since each 5 mL contains 250 mg, we can calculate this by setting up a proportion:

(250 mg / 5 mL) = (Total mg / 150 mL)

Solving for Total mg gives us:

Total mg = (250 mg / 5 mL) * 150 mL Total mg = (50 * 150) Total mg = 7500 mg

Now that we know there are a total of 7500 mg in the bottle, we can determine how many days it will last by dividing this number by the total daily dosage:

Days = Total medication in bottle / Daily dosage Days = 7500 mg / (3 doses * 250mg) Days = 7500mg /750mg Days =10

Therefore, the bottle of medication will last for 10 days.

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