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Calculate with Confidence » (5th Edition)

Book cover image of Calculate with Confidence by Deborah C. Gray Morris

Authors: Deborah C. Gray Morris
ISBN-13: 9780323056298, ISBN-10: 0323056296
Format: Paperback
Publisher: Elsevier Health Sciences
Date Published: August 2009
Edition: 5th Edition

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Author Biography: Deborah C. Gray Morris

Book Synopsis

Calculate with Confidence provides a clear consistent format with a step-by-step approach to the calculation and administration of drug dosages. It covers the ratio and proportion, formula, and dimensional analysis methods. This popular text focuses on enhancing the learning experience of students at all curricular levels by making content clinically applicable. Concepts relating to critical thinking, logical thinking, and nursing process are presented throughout. New practice problems have been added throughout this edition and rationales for the answers continue to be provided giving the students a better understanding of principles related to drug dosages. This fifth edition addresses the increasing responsibility of nurses in medication and administration; emphasizes the priority for client care, and presents material that reflects the current scope of the nursing practice.


  • A clear and consistent, step-by-step approach to calculations and administration makes it easy to understand.

  • Ratio and Proportion, Formula, and Dimensional Analysis content provides you with well-rounded coverage.

  • Pretest and post-test help identify strengths and weaknesses in competency of basic math before and assess your comprehension after Unit One: Math Review.

  • Points to Remember boxes highlighted in each chapter help you remember important concepts.

  • Critical thinking information that should be applied in the clinical setting to help avoid drug calculation and administration errors is boxed throughout the text.

  • Full-color illustrations, photographs, and drug labels familiarize you with what you'll encounter in the clinical setting.

  • Current recommendations from The Joint Commission and Institute for Safe Medication Practices are followed throughout.


  • Caution boxes identify issues that may lead to medication errors and strengthen actions that must be taken to avoid calculation errors.

  • Tips for Clinical Practice calls attention to information critical to math calculation and patient safety as well as issues related to practice.

  • Rule boxes familiarize students with information needed to accurately solve drug calculation problems.

Table of Contents

Unit One: Math Review
Pre-Test
1. Roman Numerals
2. Fractions
3. Decimals
4. Ratio and Proportion
5. Percentages
Post-Test

Unit Two: Systems of Measurement
6. Metric System
7. Apothecary and Household Systems
8. Converting Within and Between Systems
9. Additional Conversions Useful in the Health Care Setting

Unit Three: Methods of Administration and Calculation
10. Medication Administration
11. Understanding and Interpreting Medication Orders
12. Medication Administration Records and Drug Distribution Systems
13. Reading Medication Labels
14. Dosage Calculation Using the Ratio and Proportion Method
15. Dosage Calculation Using the Formula Method
16. Dosage Calculation Using the Dimensional Analysis Method

Unit Four: Oral and Parenteral Dosage Forms and Insulin
17. Calculation of Oral Medications
18. Parenteral Medications
19. Reconstitution of Solutions
20. Insulin

Unit Five: Intravenous, Heparin, and Critical Care Calculations and Pediatric Dosage Calculations
21. Intravenous Solutions and Equipment
22. Intravenous Calculations
23. Heparin Calculations
24. Critical Care Calculations
25. Pediatric and Adult Dosage Calculation Based on Weight

Comprehensive Post-Test

Answer Key

Index

Subjects