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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["15"]
Explanation
Here's what we know:
Volume remaining in the bag: 630 mL
Total volume to be infused (remaining volume): 630 mL (since we're using the remaining volume)
Infusion time: 7 hours
Drop factor (delivery rate per mL): 10 gtt/mL
We need to find:
Infusion rate (gtt/min)
Steps to solve:
Convert hours to minutes:
Infusion time (hours) = 7
Conversion factor: 1 hour = 60 minutes
Infusion time (minutes) = 7 hours x 60 minutes/hour = 420 minutes
Calculate the required infusion rate (gtt/min):
Total volume to be infused (mL) = 630 mL
Drop factor (gtt/mL) = 10 gtt/mL
Infusion time (minutes) = 420 minutes
Infusion rate (gtt/min) = (Total volume (mL) / Infusion time (minutes)) x Drop factor (gtt/mL)
Infusion rate (gtt/min) = (630 mL / 420 minutes) x 10 gtt/mL
Infusion rate (gtt/min) = 15 gtt/min (rounded to the nearest whole number)
Therefore, the nurse should regulate the infusion to deliver approximately 15 drops/minute.
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.
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