# ch07pt3

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Category: Education

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## Presentation Transcript

### 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

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