Nursing is the branch of medical science which involves delivering person-centered care. It is also focused on the maintenance of the optimal well-being and quality of life for individuals. The principal roles of nursing include health promotion and prevention of illness, caring for disabled and mentally ill persons, and engaging in healthcare teaching. Nursing also involves providing assistance in healthcare research. On the basis of the patient being cared for, nursing can be divided into various specialties such as mental health, pediatrics and gerontology. This book studies and analyses the central concepts of nursing and its utmost significance in modern times. It strives to provide a fair idea about this area of medical science and to help develop a better understanding of the latest advances within this field. The book is a vital tool for all researching and studying the field of nursing.