am practicing for an upcoming med math quiz and ran across a question re IV flow rates on this site
(q #7) that has me confused..Here it is: 7. Your patient has an order to receive 800 units of Heparin per hour by continuous intravenous infusion. If the pharmacy mixes the IV bag to contain a total of 5,000 units of Heparin in 500 ml of D5W, how many cc's per minute should the patient receive?
The answer they give is 80 cc's/minute...
But, wouldn't that give the pt 800 units Heparin per minute?
The answer I came up with is: 1.3 ml/minute. here's how: 5,000 units per 500 ml = 10 units per ml.
800 units per hour divided by 60 minutes=13.3 Units per minute. so, 1.3ml per minute = 13.3 units per minute x 60 minutes per hour =798 units per hour.
feel like I am missing something obvious. or the site is wrong. I vote the latter.
thanks for the help.
(any way to post this anonymously)