The purpose of Nursing Theory: Utilization and Application 2/e is to demonstrate theory based nursing practice, showing how nursing theory guides critical thinking for decision making in professional nursing practice. The text is presented in three parts: Part 1 has four chapters, and covers such content areas as the history of professional nursing; areas of theory-based practice reported in tables and referenced in the nursing literature; three nursing philosophies, seven nursing models, and six theories presented in the context of the structure of nursing knowledge; and the ethical obligations of nursing and the moral imperatives in nursing philosophies, models and theories. Part 2 has been expanded to include applications of theory-guided nursing practice written by clinical experts in three sections: philosophies of nursing, nursing models, and middle-range theories of nursing. Part 3 contains two chapters that speak to expansion in two different ways. One chapter highlights nursing practice areas for expansion of theory-based practice, and the final chapter of the text issues a challenge based on nursing values and the essential nature of theory-based nursing.