Question

Medal
A physician orders enoxaparin for a patient with deep vein thrombosis. The in stock solution of enoxaparin is 300 mg / 3 mL and the dosage instructions are 1 mg/kg SC q.12.h., and the patient weighs 85kg. Provide complete, detailed instructions for proper drug administration

Answer 1

1 mg/kg
a patient weighs 85 kg
therefore he needs 85 mg

Answer 2

the solution you are giving him has
300 mg / 3 mL

Answer 3

how many mL do you have to give him for 85 mg then

Answer 4

8.5 mL

Answer 5

no no, are you confused with anything i ve typed so far

Answer 6

m not confused i just dont understand the 85 mg in mL how do you convert this

Answer 7

okays the solution you administer to the patient has 300 mg for every 3 mL

Answer 8

you have to give him x mL such that he only get 85 mg

Answer 9

you can look at the ratios there 300 mg for 3 mL means
100 mg for 1 mL

Answer 10

which is not low enough, can you think of how to get it to 85 mg for some other mL

Answer 11

ok so we need to make 85mg to mL right

Answer 12

we arent turning mg to ml we are just trying to figure out the ratios here

Answer 13

ohh i c

Answer 14

for example what we did in that middle step there how i got 100 mg for 1 ml is

since
300/3 = 100/1
this is the same ratio
in the same way
300/3=85/x what should x be to maintain the same ratio

Answer 15

so we cross multiply to get it right

Answer 16

yep

Answer 17

solve for x