Final answer:
To calculate the dosage of famotidine for a 50lb child, first convert the weight to kilograms and then multiply by the prescribed dosage. The child should receive 11.4 mg per dose.
Step-by-step explanation:
The question involves calculating the correct dosage of medication (famotidine) based on the patient's weight.
To find the dosage in milligrams (mg), first convert the patient's weight from pounds to kilograms, knowing that one kilogram is approximately equal to 2.2 pounds.
Next, calculate the dosage using the prescribed amount of 0.5 mg/kg.
First, convert the weight:
- 50 lb ÷ 2.2 = approximately 22.73 kg
Next, calculate the dosage:
- 22.73 kg × 0.5 mg/kg = 11.365 mg
The nurse should round this to the nearest tenth which would be 11.4 mg per dose.