Answer:
The correct answer is option (D) 22mL
Explanation:
Solution:
Given:
liquid concentration = 100mg/mL
weight = 20kg
dosage = 50mg/lb
converting the dosage from mg/lb to mg/kg, we have
1kg = 2.2046lb
therefore, dosage = 50mg * 2.2046/kg = 110.23mg/kg
The required solution can be obtained using the formula below
Dose = weight in kg * dosage in mg/kg ---------------1
liquid dose = dose/liquid concentration----------------2
Substituting into equation 1, we have
Dose = 20kg * 110.23mg/kg = 2204.6mg
For liquid dose, substitute into equation 2
Liquid dose = 2204.6mg/100mg/mL
22. 046mL
Approximately 22mL
Therefore, 22mL is needed to be administered to the 20kg patient
