The 4th Edition of this groundbreaking textbook continues to teach the "why" of medical-surgical nursing more effectively than any other resource in the field. It presents complex issues in a clear and easy-to-understand manner that encourages students to think critically while applying theory to clinical practice. New chapters, new features, and new content fill the pages from cover to cover—while a bonus CD-ROM in every book and a wealth of resources online at DavisPlus create a true multimedia learning experience. Rely on the Study Guide (sold separately) to master the principles, concepts, and skills that are the foundation of a nursing education. Each chapter corresponds to a chapter in the textbook and features vocabulary exercises, connection and critical-thinking question and documentation exercises.