This Yearbook of Anesthesiology is the 11th yearbook of the popular Anesthesiology publication by the Indian College of Anaesthesiologists. This book contains chapters on recent advances in Anesthesiology covering all subspecialties of Anesthesiology. International experts in different fields have written the chapters. Medicine is an ever-evolving field. Research and advances in the medical field are taking place at breakneck speed. The subject of Anesthesiology has seen tremendous advancement in the last few decades. To keep pace with this immense progress, we need to be abreast with the ever-expanding knowledge base. This book is an attempt to bridge the knowledge gap created by advances in the specialty.