Critical and intensive care is concerned with the life support and monitoring provided to individuals with life-threatening conditions. Such care is particularly significant in patients with airway or respiratory compromise, instability, acute renal failure, multiple organ failure or potentially lethal cardiac arrhythmias. An important criterion for the facilitation of intensive care to patients is that the condition is potentially reversible and that the patient can survive. Critical care adopts a system-by-system approach to medicine with emphasis on the central nervous system, cardiovascular system, hematology, respiratory system, endocrine system, gastro-intestinal tract, renal system, etc. This book is compiled in such a manner, that it will provide in-depth knowledge about the practice of critical and intensive care. Different approaches, evaluations, methodologies and advanced studies on critical care medicine have been included in this book. For all those who are interested in critical and intensive care medicine and nursing, this book can prove to be an essential guide.