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 fourth edition addresses the increasing responsibility of nurses in medication and administration; it emphasizes the priority for client care, and presents material that reflects the current scope of the nursing practice. The NEW student CD-ROM packaged with each book contains numerous interactive exercises and a comprehensive post-test.