Can someone explain this practice dosage question?
“A patient was administered a 0.5 mL injection; the medication was drawn up from an ampule labeled 1:2000 w:v (w in grams and v in mL). How much medication in mg was the patient provided in this injection?”
I know the answer is 0.25 mg, I want to learn how to solve the question.
- Anonymous1 month ago
1:2000 w:v is the same as
1g = 2000ml or
2000ml = 1g
divide both sides by 4000 to get
0.5ml = 0.00025g or 0.25mg