hi,

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)