The healthcare provider prescribes an intravenous (IV) bolus of diltiazem 0.25 mg/kg for a client with atrial fibrillation. The client weighs 178 pounds. How many mg should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
The Correct Answer is ["20"]
1. Convert client weight to kilograms (kg):
Client weight (lbs) = 178
We know 1 kg = 2.2 lbs
Client weight (kg) = 178 lbs / 2.2 lbs/kg = 81.36 kg (rounded to two decimal places for accuracy)
2. Calculate the total diltiazem dosage:
Dosage per kg = 0.25 mg/kg
Client weight (kg) = 81.36 kg
Total dosage (mg) = Dosage per kg * Client weight (kg)
Total dosage (mg) = 0.25 mg/kg * 81.36 kg = 20.34 mg (rounded to two decimal places for accuracy)
3. Round the dosage to the nearest whole number for administration:
Total dosage (mg) = 20.34 mg (rounded to two decimal places)
In practice, medication dosages are typically rounded to the nearest whole number for safe and accurate administration. Therefore, the nurse should administer 20 mg of diltiazem.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["15"]
Explanation
The total amount of liraglutide in the pen is 18 mg.
The prescribed dosage is 1.2 mg per dose.
Therefore, the number of doses available in each pen would be:
NumberofDoses = Totalamountinpen / Dosageperdose = 18mg / 1.2mg/dose = 15doses
So, the nurse should tell the client that there are 15 doses available in each liraglutide pen.
Correct Answer is ["17"]
Explanation
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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