math help




Aug 26, '0925000 U/500 mls x 25 mls/1 h = 1250 U/hr
Yes looks like you have the correct answer. I always use deminsional analysis to figure the problem. 

Aug 26, '09Gonz,
easiest way to calculate would be to reduce the concentration of heparin into units/ml
So, if you have 25,000 U in 500mL, knock off the common zeros (2 of them) to make 250 U in 5mL & then divide 250/5=50. That makes it 50 U per mL.
Once you have the Units per mL, you can easily calculate any pump setting.
For your case, 25 mL per hour would have you multiplying 25 (for the mL) times the 50 Units per mL to equal the 1250 units per hour. 