Nursing is a health care profession that involves the promotion of health, prevention of illness and provision of care to disabled, sick and dying individuals. To achieve these objectives, nursing integrates principles of social science, technology, physical science, and nursing theory. Nurses help in patient care by coordinating with other physicians, therapists, dieticians, etc. It also involves treating patients, taking records of their medical history, providing emotional support and follow-up-care. This book covers in detail some existing theories and modern approaches to nursing. Selected topics that redefine this profession have been presented in this book. For someone with an interest and eye for detail, this book covers the most significant topics in this field.