The BSA is 2.16, meaning the dose is 3.24mg
On hand is 4mg/4mL
So...Desired/Have on hand * Quantity would be 3.24mg/4mg * 4mL = 3.24mL
Here is where I get stuck. I add 3.24 mL to the 50mL D5W to get a total volume of 53.24mL to infuse over 90 min. So 53.24mL/90 min * 60 min/1 hr = 35.49 mL/hr. But that's not the answer, so I'm missing something...