Higher Education

Dosage Calculations: A Ratio-Proportion Approach, 3rd Edition

  • includes Student Practice Software
  • Gloria D. Pickar, RN, EdD
  • Amy Pickar Abernethy, MD Duke University
  • ISBN-10: 1435454103  |  ISBN-13: 9781435454101
  • 592 Pages
  • Previous Editions: 2007, 1999
  • © 2011 | Published
  • College Bookstore Wholesale Price = $132.00
  • Newer Edition Available



Now in its third edition, this market-leading resource retains the core strengths that made previous editions so successful, while providing the most up-to-date coverage of the science of conducting dosage calculations using a ratio-proportion approach! With a comprehensive math review, full-color drug labels, and critical thinking assessments, DOSAGE CALCULATIONS: A RATIO-PROPORTION APPROACH, third edition contains all of the trusted tools needed to teach students how to significantly reduce errors and increase their confidence in dosage calculation. The book carefully examines both basic and advanced calculations, including intravenous medications and those specific to the pediatric patient. It has been revised to reflect the most current drugs and protocol, as well as the newest regulations on medication abbreviations, new medication administration technologies, and safe medication practices, all in an effort to make this a solid resource and reference for anyone in, or entering the field.

Additional Product Information

Features and Benefits

  • Simulates a clinical environment through the use of real drug labels and life-size syringes, preparing readers for work in the field.
  • Builds reader confidence with the original three-step method of Convert, Think, Calculate, training them to approach calculations logically, and with a reduced risk of medication errors.
  • Develops critical thinking skills through real-world clinical scenarios that demonstrate the importance of safe medication administration.
  • Facilitates mastery of dosage calculations with valuable, hands-on tools, including hundreds of examples, practice problems, review sets and self tests.
  • Ensures safe and current use of standardized terminology by including only approved TJC and ISMP abbreviations.

Table of Contents

1. Fraction and Decimals.
2. Ratios, Percents, Simple Equations, and Ratio-Proportion.
3. Systems of Measurement.
4. Conversions: Metric, Apothecary, and Household systems.
5. Conversions for Other Clinical Applications: Time and Temperature.
6. Equipment Used in dosage Measurement.
7. Interpreting Drug Orders.
8. Understanding Drug Labels.
9. Preventing Medication Errors.
10. Oral Dosage of Drugs.
11. Parenteral Dosage of Drugs.
12. Reconstitution of Solutions.
NEW! 13. Alternative Dosage Calculation Methods: Formula and Dimensional Analysis.
14. Pediatric and Adult Dosages Based on Body Weight.
15. Intravenous Solutions, Equipment, and Calculations.
16. Body Surface Area and Advanced Pediatric Calculations.
17. Advanced Adult Intravenous Calculations.
Essential Skills Evaluation.
Comprehensive Skills Evaluation.

What's New

  • Includes an all-new chapter on alternate calculation methods (formula and dimensional analysis).
  • Highlights the newest regulations on medication abbreviations, new medication administration technologies, and safe medication practices.
  • Includes an engaging new Student Practice Software CD-ROM which offers tutorials, interactive label and syringe exercises, and hundreds of questions with solutions.
  • Offers an all-new solutions manual, available to instructors, which gives answers and solutions to every problem in the text.
  • Includes new online courseware partners such as an online companion and webtutor courses, which contain additional problems, interactive exercises, an audio glossary, and more.

Learning Resource Bundles

Choose the textbook packaged with the resources that best meet your course and student needs. Contact your Learning Consultant for more information.

ISBN-10: 1133024289 | ISBN-13: 9781133024286

List Price = $254.95  | College Bookstore Wholesale Price = $192.00

This Bundle Includes:

  • Dosage Calculations: A Ratio-Proportion Approach
    List Price = $175.95  | CengageBrain Price = $175.95  | College Bookstore Wholesale Price = $132.00
  • 3-2-1 Calc! Comprehensive Dosage Calculations Online V2.0: 2 year Printed Access Card
    List Price = $146.00  | College Bookstore Wholesale Price = $109.50


All supplements have been updated in coordination with the main title. Select the main title's "About" tab, then select "What's New" for updates specific to title's edition.

For more information about these supplements, or to obtain them, contact your Learning Consultant.

Instructor Supplements

Electronic Classroom Manager  (ISBN-10: 1435454111 | ISBN-13: 9781435454118)

Student Supplements

WebTutor™ Advantage on WebCT™, 1 term (6 months) Printed Access Card  (ISBN-10: 1435454138 | ISBN-13: 9781435454132)

Improve your grades with WebTutor™ online review and test prep tools.

List Price = $39.00  | CengageBrain Price = $39.00  | College Bookstore Wholesale Price = $29.25

WebTutor™ Advantage on Blackboard®, 1 term (6 months) Printed Access Card  (ISBN-10: 143545412X | ISBN-13: 9781435454125)

Improve your grades with WebTutor™ online review and test prep tools.

List Price = $39.00  | CengageBrain Price = $39.00  | College Bookstore Wholesale Price = $29.25

Meet the Author

Author Bio

Gloria D. Pickar, RN, EdD

Gloria D. Pickar, R.N., Ed.D., is President and Chief Academic Officer of Compass Knowledge Group in Orlando, Florida. She is a former Academic Dean at Seminole State College in Sanford, Florida. She is also the author of nine editions of best-selling DOSAGE CALCULATIONS.

Amy Pickar Abernethy, MD

Amy Pickar Abernethy, MD, is Associate Professor of Medicine and Nursing at Duke University in Durham, North Carolina.