This book is written for healthcare professionals who wish to understand the principles of critical care nursing. The text is presented in a way that should make it accessible to anyone, independent of prior knowledge of critical care. It is suitable as a textbook for undergraduate and postgraduate nursing and medical students. The text is designed to be used by all healthcare professionals, including nurses and allied health professionals, and not just medical practitioners. Those with a background in information and clinical experience should find the book a valuable introduction to the critical care nursing, as well as summarize the unique challenges of this field.The book has a strong emphasis on demonstrating practical aspects. Language is simple and easily understandable. Tables, flow chart and figures has been used to clarify the subject. Chapters are crisp and concise with main focus on practical aspects. This book will prove as a companion to nursing and medical students as well as nurses working in ICU.