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Chapter 7 Intravenous Access and Medication AdministrationPart 3Medical Mathematics : 

1/13 Chapter 7 Intravenous Access and Medication AdministrationPart 3Medical Mathematics Galveston College EMS Paramedic 2009

Topics : 

2/13 Topics Metric System Conversions Systems of Measure Medical Calculations

Metric System : 

3/13 Metric System Three fundamental units Grams—Mass Meters—Distance Liters—Volume

Conversion Between Prefixes : 

4/13 Conversion Between Prefixes

Slide 5: 

5/13

Medical Calculations : 

6/13 Medical Calculations

Desired Dose : 

7/13 Desired Dose Specific quantity of medication needed Most doses expressed as weight: Grams Milligrams Micrograms May be standard or based on body weight

Dosage and Volume on Hand : 

8/13 Dosage and Volume on Hand The amount of drug available ina solution. Concentration is the weight pervolume.

Calculating Medication Doses : 

9/13 Calculating Medication Doses Volume to be administered = Volume on hand (desired dose) Dosage on hand

Calculating Infusion Rates : 

10/13 Calculating Infusion Rates Medicated Infusions Drops/minute = Volume on hand x drip factor x desired dose Dosage on hand

Calculating Infusion Rates : 

11/13 Calculating Infusion Rates Fluid Volume Over Time Drops/minute = Volume to be administered (drip factor) Time in minutes

Slide 12: 

12/13 Exact flow rates are critical in pediatric patients since they cannot tolerate over- or under doses.

Summary : 

13/13 Summary Metric System Conversions Systems of Measure Medical Calculations

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