It is imperative to understand how to calculate IV Infusion/IV mixture, dosage, and rate of flow in preparing for the PTCB or ExCPT exams. This page is dedicated to IV administration sets that serve the mixture to the end user (Patient).
IV Infusion setsdrops per ml(gtt/ml)NOTDrops per Minute (gtt/min)
Here is the basic formula:
Memorize the difference of the two.
IV Infusion devices are calibrated to deliver so many Drops per Milliliter.
A nurse will set the device to dispense so many drops per minute in order to achieve the proper ml/min.
last page720ml of mixture over 6 hours720mL ÷ 6 Hrs = 120mL/Hr120mL/Hr ÷ 60(min/Hr) = 2mL/min2mL/min10 gtt/ml,ml/minmultiplygtt/ml2ml/min x 10gtt/ml = 20gtt/minVideo Tutorial
Another flow rate calculation example
Question from Angel on Yahoo! Answers A 110lb woman is started on a nitroglycerin IV drip.The order is to administer the nitroglycerin at 5mcg/min. The pharmacy sends a 250ml IV container with 25mg of nitroglycerin added to the container. What rate in ml/hr should the IV run?