A 77-lb patient is ordered aminophylline 3 mg/kg po every 6 hours. The oral liquid is available as 105 mg/5 mL. What volume should be administered per dose?

Whoever wrote this question loves math, hahaha.

Start by converting 77# to kg, which is 34.9kg

The medication dose is 3 mg/kg, so 3 x 34.9 = 104.7 mg.

Rounding up, that’s 105 mg, and the medication comes in 105mg/5 mL, so they would get 5 mL.

If you’re not allowed to round, you’ll get 4.985 mL, and you’re not going to have the ability to accurately micromeasure like that with an oral medication.