The dose of gentamicin sulfate is 1.7mg/kg. How many mls of an injectable solution containing 40mg/ml should be administered to a person weighing 220 pounds?
Ok. So I know 220lbs = 100kg
Do I times 100kg by 1.7mg/kg
and what do I do after that....
2006-12-11 13:14:54 · 3 answers · asked by CookFrNW 3 in Science & Mathematics ➔ Medicine
OK, forgetting the fact that you are asking medicine dosing questions on Yahoo!:
100 Kg = 220 lb
the dose is 1.7 mg/Kg so you need 170 mg
170 mg of a 40 mg/mL solution would be 4.25 mL.
You should talk to your doctor and have this worked out ahead of time! I would still recommend talking to a health care professional first.
2006-12-11 13:22:17 · answer #1 · answered by The Gooch 2 · 0⤊ 0⤋
As the others pointed out it is the answer is 4.25 ml but that answer is derived by taking the the two ratios 40mg/1ml by 170mg / X set up as
170mg/xml X 40mg/1ml
cross multiplying 40mg(xml) = 170mg(1ml)
therefore 40x ml mg = 170mg ml
which is Xml = 170mg ml
------------
40 mg
Now X ml = 4.25 ml because 40 goes into 170 a total of 4.25 times and the mg on the bottom cancels the mg on the top.
2006-12-11 21:53:40 · answer #2 · answered by arnp4u 3 · 0⤊ 0⤋
I believe you : multiply 1.7mg by 100kg = 170ml for 100kg
next: divide 170mg by 40mg=4.25ml for 170ml
answer is 4.25 ml
2006-12-11 21:24:04 · answer #3 · answered by Fluffy 1 · 0⤊ 0⤋