Math Calculation

Order: Heparin infusion at 800 units/hr

Available: premixed Heparin solution of 25,000 in 250 ml D5W

What is the rate in ml/hr?

If I had a penny for everytime I've had to readjust and re-calculate a Heparin drip, I'd probably have enough to buy dinner for my whole family. I understand that it is kind of new to you, but the old "dose desired over dose on hand time the amount" is always going to give you the answer to these Heparin problem in terms of rate in ml/hr--always. Set it up like this:

The dimensional analysis way to set this up, so your labels cancel out and you end up with your desired labels of ml/hr is as follows:

#2) Order: Start Nitroglycerin infusion at 5 mcg/min

Available: premixed Nitroglycerin bottle 50 mg in 250 ml of D5W

What is the rate in ml/hr?

This one is a little more of a challenge because you need to use a conversion ratio that you don't usually use. Here is how you set the equation up by dimensional analysis (setting up fractions with labels that are going to cancel out to give you the ending label (mL/hr) that you want)

Now, cancel out (divide out) labels which now leaves you with the following arithmatic problem: