Question

Using Young's rule, calculate the number of milligrams needed of labetolol 200 mg tid for a patient who is 3 years old and weighs 33 lbs?

1) 30
2) 35
3) 40
4) 45

Answer 1

Using Young's rule, the number of milligrams needed of labetolol 200 mg tid for a 3-year-old patient who weighs 33 lbs is 40 mg tid.

Step-by-step explanation:

In order to calculate the number of milligrams needed of labetolol for a 3-year-old patient who weighs 33 lbs, we can use Young's rule. Young's rule states that the child's dosage is calculated by dividing the child's age by the sum of the child's age and 12, and then multiplying it by the adult dosage. In this case, the adult dosage is 200 mg tid (three times a day).

So for a 3-year-old patient, we can calculate the dosage as follows:
Child's dosage = (3 years / (3 years + 12 years)) * 200 mg tid = (3/15) * 200 mg tid = 40 mg tid.

Therefore, the number of milligrams needed of labetolol 200 mg tid for a 3-year-old patient who weighs 33 lbs is 40 mg tid.