Tough math question here! Premed to be given is 4mg omnopon?

Question

and 0.08mg of scopolamine. 20 mg omnopon and 0.4mg of scopolamine in 1ml is in stock. How many mls will you give?

Answer 1

1 ml of available formulation contains- 20 mg omnopon & 0.4 mg scopolamine.



we want to give 4 mg of omnopon which is 1/5th of 20mg.

1/5 th of 1 ml = 0.2 ml

Check for scopolamine - 0.2 ml of formulation will contain 0.4 / 5 = 0.08 mg of scopolamine. That is the dose required.

Thus, dose of stocked formulation = 0.2 ml