For my friends who get this by e-mail, you can ignore this one. It's for us math-challenged nurses!
After memorizing this formula, I just made 100% on an online Pharmacology Test!
Calculating IV flow rates using MAGIC NUMBER method.
I copied this from allnurses.com Thank-you NeneRN
Determining which "magic number" you will use depends on your tubing gtt size. (60 divided by gtt size equals magic number).
For example, 60 gtt tubing; 60 divided by 60 equals ONE.
15 gtt tubing; 60 divided by 15, equals FOUR.
10 gtt tubing; 60 divided by 10 equals SIX.
Okay, so once you know which "magic number" you're using, you then divide your ordered rate (ml/hr) by the magic number to get your gtts/min.
For example, You have an order for NS at 120cc/hr using 15 gtt tubing. What is your drip rate in gtts/min? 60 divided by 15 equals FOUR (magic number). 120 cc/hr divided by 4 equals 30 gtts/min.
Another example,Your order is to infuse D5NS at 240ml/hr using 10 gtt tubing. What is your drip rate in gtts/min? 60 divided by 10 equals SIX (magic number). 240ml/hr divided by 6 equals 40 gtts/min
Take Care on the Journey,
Always remember your Conversion Rules!