20,000 units of heparin are added to 500 ml of NS.regulate the IV to deliver 2000 units of heparin per hour, the drip factor = 15gtts/ml.how many ml/hr should be administered?how many gtts/min?
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20,000 units per 500ml = 40units per ml
2000 units per hour = 50ml per hour
15gtts/ml = 750 gtts/hr = 12.5 gtts/min
note: I am not a nurse so if you have to account for the volume of the 20000 units (ie: 500ml + 20000units = 650ml )
then this answer is wrong, but if 500ml with 0 units is equal to 500ml with 20 000 units then this is the answer.
20,000/500 is 40 units/ml
you want 2,000 units /hr so 2,000/40 is 50 ml/hr to get 2,000 units/hr.
15 gtts/ml times 50 ml is 750 gtts/hr or 750 gtts/60min or 12.5 rounded to 13 gtts/min
Note- The volume of the heparin is negligible and not counted in.