Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Division 1 Introduction to Advanced Prehospital Care

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Chapter 7 Intravenous Access and Medication Administration Part 3 Medical Mathematics

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Topics Metric System Conversions Systems of Measure Medical Calculations

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Metric System Three fundamental units – Grams—mass – Meters—distance – Liters—volume

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Conversion between Prefixes

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Medical Calculations

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Desired Dose Specific quantity of medication needed Most doses are expressed as weight. – Grams – Milligrams – Micrograms May be standard or based on body weight

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Dosage and Volume on Hand The amount of drug available in a solution. Concentration is the weight per volume.

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Calculating Medication Doses Volume to be administered = Volume on hand (desired dose) Dosage on hand

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Calculating Infusion Rates Medicated Infusions Drops/minute = Volume on hand x drip factor x desired dose Dosage on hand

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Calculating Infusion Rates Fluid Volume Over Time Drops/minute = Volume to be administered (drip factor) Time in minutes

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Exact flow rates are critical in pediatric patients because they cannot tolerate over-or underdoses.

Bledsoe/Porter/Cherry, Essentials of Paramedic Care, Second Edition Update © 2011 by Pearson Education, Inc. Upper Saddle River, New Jersey Summary Metric System Conversions Systems of Measure Medical Calculations