
Brown and Mulholland’s Drug Calculations
Ratio and Proportion Problems for Clinical Practice
- 13th Edition - January 22, 2026
- Latest edition
- Authors: Ann Tritak-Elmiger, Margaret Daingerfield
- Language: English
Learn how to safely, accurately, and confidently calculate medication dosages! Brown and Mulholland’s Drug Calculations: Ratio and Proportion Problems for Clinical Practice… Read more
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Learn how to safely, accurately, and confidently calculate medication dosages! Brown and Mulholland’s Drug Calculations: Ratio and Proportion Problems for Clinical Practice is recognized for its realistic practice problems and unique “proof” step in the answer key, which allows you to double-check your answers and avoid medication errors. Helpful worksheets and assessment tests allow you to gauge your progress, while Clinical Alerts call attention to situations in actual practice that have resulted in drug errors. This edition continues to promote critical thinking, clinical judgment, and patient safety with updates related to safe medication administration, new medications and drug labels, and updated Next-Generation NCLEX® practice problems and case studies.
- More than 1,100 ratio and proportion problems offer the extensive practice you need to become proficient in this method of drug calculation.
- Step-by-step format for each problem includes a unique “proof” step in the answer key to ensure you understand the solution.
- Next-Generation NCLEX® (NGN) exam–style questions in select chapters are accompanied by answer keys with rationales for correct answers.
- Hospital National Patient Safety Goals offer valuable guidance on identifying patients correctly, using medications safely, and preventing infection.
- End-of-chapter practice tools include general worksheets, multiple-choice worksheets, critical thinking exercises, chapter finals, and a chapter answer key.
- Safe Medication Administration chapter helps you learn how to prevent medication errors and understand drug labels, medication administration forms, and provider order forms.
- Clinical Alerts highlight potential and common drug calculation errors.
- Full-color drug labels and equipment illustrations provide a realistic representation of medication administration.
Undergraduate nursing students
1. General Mathematics
2. Ratio and Proportion
3. Safe Medication Administration
4. Medication Measurements and Oral Dose Calculations
5. Injectable Medication Calculations
6. Reconstitution of Medications from Powders and Crystals: Oral and Intramuscular
7. Basic Intravenous Therapy Calculations
8. Advanced Intravenous Calculations
9. Insulin Administration and Type 2 Diabetes Medications
10. Parenteral Nutrition
11. Anticoagulants
12. Children’s Dosages
2. Ratio and Proportion
3. Safe Medication Administration
4. Medication Measurements and Oral Dose Calculations
5. Injectable Medication Calculations
6. Reconstitution of Medications from Powders and Crystals: Oral and Intramuscular
7. Basic Intravenous Therapy Calculations
8. Advanced Intravenous Calculations
9. Insulin Administration and Type 2 Diabetes Medications
10. Parenteral Nutrition
11. Anticoagulants
12. Children’s Dosages
- Edition: 13
- Latest edition
- Published: January 22, 2026
- Language: English
AT
Ann Tritak-Elmiger
Ann Tritak, EdD, RN currently Associate Dean – Department of Graduate Nursing and Director DNP Program, Felician University, Lodi, New Jersey. She is also a Professor of Graduate Nursing Faculty. Ann has worked on the resources for the Mulholland: The Nurse, The Math, The Meds, for the 2nd and 3rd editions and she has also contributed chapters to the Potter: Fundamentals of Nursing, 8e, Potter: Essentials of Nursing, 8e and Potter: Basic Nursing, 7e. She has also published several nursing articles in journals such as the Journal of Nursing Staff Development and Nurse Educator
Affiliations and expertise
Associate Dean – Department of Graduate Nursing and Director DNP Program, Felician University, Lodi, New Jersey. Professor of Graduate Nursing Faculty, USAMD
Margaret Daingerfield
Margaret (Peggy) Daingerfield is currently Associate Professor, Director of the MSN Program. Department of Graduate Nursing, Felician University, Lodi, NJ. She also served as Associate Dean, Director of the DNP Program, Department of Graduate Nursing, School of Nursing, Felician University from 2008-2015. Peggy’s strengths are in undergraduate curriculum development and faculty development. They both have taught drug calculations to nursing students throughout their teaching careers
Affiliations and expertise
Margaret (Peggy) Daingerfield is currently Associate Professor, Director of the MSN Program. Department of Graduate Nursing, Felician University, Lodi, NJ, USA