help with math question

[leern]

Please refresh me and explain how to do this...A procainamide drip is ordered for 2 mg/min. The standard mixture of porcainamide is 2 g in 500 ml. At how many ml/hr should the IV pump be set_________ml/hr
thanks for any help

[mrkmrrtt]

Again, you want the answer in ml/hr. Set up the equation so units cancel, 500ml/2000mg (Procainamide concentration), X 2mg/min (Order), X 60min/hr. You need to put in a conversion factor for min to hr because IV pumps infuse in ml/hr. Result 60,000 ml / 2,000 hr. Solve for ml/hr.

500 ml x 2 mg x 60 min = 60,000 ml = 30 ml/hr
(mg and min cancel out)
2000 mg 1 min 1 hr = 2,000 hr

Good Luck,

Mark RN

[leern]

thank you very much mark for showing me how to do this. Greatly appreciated