A mother calls a nurse to say that she lost the measuring cup that comes with the cough syrup botle. How many teaspoons should the nurse recommend for the child if the dose is 10 mL?

To find the number of capsules of amoxicillin required for 5 days, you need to calculate the following:

- The total dose of amoxicillin in milligrams (mg) for 5 days using the formula: Total dose (mg) = Prescribed dose (mg) x Frequency (times/day) x Duration (days)
- The number of capsules of amoxicillin using the formula: Number of capsules = Total dose (mg) / Strength per capsule (mg)

First, use the formula for total dose to find the amount of amoxicillin in milligrams for 5 days:

Total dose (mg) = Prescribed dose (mg) x Frequency (times/day) x Duration (days)

Since the prescribed dose is 250 mg, the frequency is 3 times per day, and the duration is 5 days, plug in these values into the formula:

Total dose (mg) = 250 mg x 3 times/day x 5 days

Simplify and solve for the total dose:

Total dose (mg) = 3750 mg

Next, use the formula for number of capsules to find how many capsules of amoxicillin are needed:

Number of capsules = Total dose (mg) / Strength per capsule (mg)

Since the total dose is 3750 mg and the strength per capsule is 250 mg, plug in these values into the formula:

Number of capsules = 3750 mg / 250 mg

Simplify and solve for the number of capsules:

Number of capsules = 15

Therefore, the client needs **15 capsules** of amoxicillin for 5 days.

This answer is correct because BSA is the most accurate method for calculating the child's dose from the adult dose¹². BSA takes into account the child's weight and height, and reflects the physiological function and organ growth of the child beter than weight alone¹. BSA can be calculated using a nomogram or a formula based on the child's weight and height¹. The child's dose can then be calculated by multiplying the adult dose by the ratio of the child's BSA to the average adult BSA (1.73 m2)¹. For example:

Child dose by BSA = (mg/day) = Adult Dose in mg/day x BSA in m2 / 1.73

OR

Child dose by BSA = (mg/day) = Adult Dose in mg/m2 x BSA in m2

The other options are not correct because they are not accurate methods for calculating the child's dose from the adult dose. Actual body weight and ideal body weight may not account for individual variations in pharmacokinetics, pharmacodynamics, or clinical response. Actual body height is not a reliable indicator of drug dosage, as it does not reflect the body mass or organ function of the child.