Question

A normal adult dose of Benedryl is 50 mg. What would be a safe dose for a child weighing 27 lbs and measuring 34 inches?

Label all numbers with its corresponding unit and drug

Place zeros in front of decimals (0.1)

Answer 1

Wt of the child in kg =27/2.2

=12.27 kg

height in cm= 34 inch=86.36cm

BSA (m²) =√{ Ht (cm) X wt (kg)}/ 3600

                =√(86.36 X 12.27)/ 3600

                    = √1059.63/ 3600

                    =0.542 m²

Child’s dosage    =    Child’s BSA(in m²)   X   Adult dose / 1.7 m²

                                             ⁼ 0.542 X (50/1.7)

                                   = 15.94 mg  will be the child’s dose having 27 lb wt & 34 inch height as measure