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IV Dosage Calculations Tutorial

# IV Dosage Calculations Tutorial - AV TR S IN OU EN DO...

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Click to edit Master subtitle style  2/2/11 TUTORIAL CALCULATION S DO SA GE INTRAVENOU S

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2/2/11 Terms & Concepts What is the IV flow  rate? The speed at  What is the drop  factor? The number of  What determines gtt/mL? The size of the IV  administration set  (tubing) What are the tubing  sizes? 10, 15, or 20 gtt/mL  (Macrodrip tubing) 60 gtt/mL (Microdrip tubing) How do you calculate the IV flow rate? Using the IV flow rate formula
2/2/11 IV Flow Rate Formula IV Flow Rate Formula  is used when  calculating an infusion by gravity (without an IV  pump). Electronic Flow Rate Formula  is used when  calculating an infusion by IV pump (electronic  infusion device, or EID). *Round all rates to the nearest whole number

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2/2/11 Dosage Calculations Complete necessary conversions (i.e.  dosage per weight,  mass, volume, etc) prior to  using either of the two previous flow rate  formulas. Conversions may be calculated using:
Click to edit Master subtitle style  2/2/11 ! CALCULATE LET’ S

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2/2/11 800mL  ÷  10 hours =  80mL/h Volume to be Infused (in mL)    =   Flow Rate Total Infusion Time (in hours)          (in mL/h) Order: Infuse 800mL of NS in 10 hours. This is a straight-forward IV flow rate  calculation, in which no conversion is  required. We know we will be using the  Electronic Flow  Rate Formula  because we were not given the  tubing size or drop factor, which would be  required to calculate a gravity flow rate. The correct formula is: #1
2/2/11 150mL x 20gtt/mL  ÷  30  minutes = 100gtt/min Order: Infuse 150mL of D5W in 30 minutes using  an administration set with a drop factor of  20gtt/mL. This is also a straight-forward IV flow rate  calculation, in which no conversion is required. We know we will be using the  IV Flow Rate  Formula  because we were given the drop  factor. The correct formula is: #2 Volume to be Infused (in mL) x Drop Factor   =  Flow Rate          Total Infusion Time (in minutes)                  (in gtt/min)

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2/2/11 Order: Infuse 100mL of LR by IV pump in 20  minutes. We know we will be using the  Electronic Flow  Rate Formula  because we were directed to use  an IV pump, and because we were not given  the tubing size or drop factor. Before using our flow rate formula, we must  complete the necessary conversion(s). To use our  Electronic Flow Rate Formula , we  need the total volume to be infused in mL (which  we know), and the total infusion time in hours  #3
2/2/11 Order: Infuse 100mL of LR by IV pump in 20  minutes.

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