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 ["83"]
Explanation
Here's how to calculate the infusion pump rate (mL/hour) for the penicillin G administration:
We know:
Total penicillin G dose: 20 million units (given)
Total volume of saline solution: 2 liters (given) = 2000 mL (convert liters to mL)
Penicillin G concentration in saline delivered by pharmacy: 10 million units/liter (given)
We need to find:
Infusion rate (mL/hour)
Steps:
Calculate the concentration of penicillin G in the final infusion solution:
We cannot directly add the penicillin G units to the saline volume because they represent different quantities. Penicillin G is measured in units, while saline volume is measured in liters (or mL).
We need to find the total volume of saline containing the prescribed dose of penicillin G:
We know the total penicillin G dose (20 million units) and the concentration of penicillin G in the saline delivered by pharmacy (10 million units/liter).
Volume of saline containing the dose (liters) = Total penicillin G dose (units) / Concentration of penicillin G in saline (units/liter)
Volume of saline containing the dose (liters) = 20 million units / 10 million units/liter
Volume of saline containing the dose (liters) = 2 liters (This confirms we received the correct concentration from the pharmacy to deliver the prescribed dose)
Correct Answer is ["7.5"]
Explanation
Here's how to calculate the concentration (mg/mL) of the reconstituted ceftazidime solution:
We know:
Total ceftazidime content after reconstitution: 750 mg (given)
Reconstitution volume: 100 mL sterile water (given)
We need to find:
Concentration of ceftazidime in mg/mL after reconstitution
Calculation:
Concentration (mg/mL) = Total amount of medication (mg) / Volume after reconstitution (mL)
Concentration (mg/mL) = 750 mg / 100 mL
Concentration (mg/mL) = 7.5 mg/mL (round to nearest tenth)
Therefore, the reconstituted ceftazidime medication provides 7.5 mg/mL.
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