Critical care medicine is relatively new but increasingly important medical specialty, which has become fully established in the current decade. This book “ICU Manual” focuses on the basic principles of intensive care which every practicing intensivist and postgraduate should be aware of. This book is organized into 28 sections and comprises of total 103 chapters. The concept of conditions commonly prevalent in intensive care has been dealt with in detail making it useful for the reader to gain a thorough knowledge of the intensive care. The scientific content is streamlined so that it would be of immense use for practicing intensivists in developing countries. Flow charts, tables, algorithms and pictures have also been added to facilitate easy understanding of the subject. Many authors from various specialties have contributed for this book. It covers extensively on all the essentials—from the basics and system-specific topics to the recent advances—thereby making it comprehensive for intensive care. The recent articles and the current guidelines of sepsis and deep vein thrombosis (DVT) have also been included. The special feature of this book is the inclusion of the chapter “Role of Ultrasound in Critical Care”, since the use of ultrasound in critical care has tremendously increased in the past five years and has totally changed the practice of intensive care in certain areas.