Weight based dosing Simple DA method
6. Patient-based Dose 6.2) Body Weight 6.2.1) Body weight General
6.2.1.1) Drug dose based on body weight Easy 1
Total tried: Correct: Wrong:
The usual initial dose of Levothyroxine is 25 mcg/kg of body weight. How many milligrams should be administered to a person weighing 71 lb?
Click on the button below to see the answer and explanations
lb equals 0.81 mg kg
Simple DA method (with drug’s weight in starting numerator).
`(25 \quad mcg)/(1\quad kg) × 71 \quad lb × (0.454\quad kg)/(1\quad lb) × (1\quad mg)/(1000\quad mcg)`
`\quad \quad \quad \quad \quad \quad \quad \quad\quad \quad \quad \quad \quad = 0.81 \quad mg \quad Ans.`
`(25 \quad mcg)/(1\quad kg) × 71 \quad lb × (0.454\quad kg)/(1\quad lb) × (1\quad mg)/(1000\quad mcg)`
`\quad \quad \quad \quad \quad \quad \quad \quad\quad \quad \quad \quad \quad = 0.81 \quad mg \quad Ans.`