The healthcare provider prescribes ganciclovir 375 mg intravenous (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.)
The Correct Answer is ["17"]
Here's how to calculate the drip rate (drops/minute) for the ganciclovir infusion:
1. We know:
Ganciclovir dose: 375 mg (given)
Infusion bag volume: 150 mL (given)
Infusion time: 90 minutes (given) = 1.5 hours (convert minutes to hours)
Drip chamber calibration: 10 drops/mL (given)
2. We need to find:
Drip rate (drops/minute)
3. Steps:
Calculate the concentration of ganciclovir in the bag (assuming all medication is in the bag):
Concentration (mg/mL) = Dose (mg) / Volume (mL)
Concentration (mg/mL) = 375 mg / 150 mL
Concentration (mg/mL) = 2.5 mg/mL
Calculate the total volume to infuse (considering the prescribed dose):
We already know the volume of the bag (150 mL), but this might contain more volume than needed to deliver the prescribed dose.
Calculate the volume to infuse based on the dose and concentration:
Volume to infuse (mL) = Dose (mg) / Concentration (mg/mL)
Volume to infuse (mL) = 375 mg / 2.5 mg/mL
Volume to infuse (mL) = 150 mL (This confirms that the full bag volume delivers the prescribed dose)
Calculate the infusion rate (mL/hour):
Infusion rate (mL/hour) = Total volume to infuse (mL) / Infusion time (hours)
Infusion rate (mL/hour) = 150 mL / 1.5 hours
Infusion rate (mL/hour) = 100 mL/hour
Calculate the drip rate (drops/minute):
Drip rate (drops/minute) = Infusion rate (mL/hour) x Drip chamber calibration (drops/mL)
Drip rate (drops/minute) = 100 mL/hour x 10 drops/mL
Drip rate (drops/minute) = 1000 drops/hour (convert to minutes)
Drip rate (drops/minute) = 1000 drops/hour / 60 minutes/hour
Drip rate (drops/minute) = 16.67 drops/minute (round to nearest whole number as requested)
Therefore, the nurse should regulate the gravity infusion at approximately 17 drops/minute.
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Related Questions
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.
Correct Answer is ["2000"]
Explanation
Here's how to calculate the total milligrams of ampicillin the child should receive per day:
Convert child's weight to kilograms:
Weight (kg) = Weight (lbs) / Conversion factor (lbs/kg)
Weight (kg) = 88 lbs / 2.205 lbs/kg
Weight (kg) = 40 kg (round to nearest whole number)
Calculate the total daily dosage:
Daily dosage (mg) = Dose per kg (mg/kg/day) * Weight (kg)
Daily dosage (mg) = 50 mg/kg/day * 40 kg
Daily dosage (mg) = 2000 mg
Therefore, the child should receive 2000 mg of ampicillin per day.
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