Clinical anesthesiology focuses on the use of anesthesia for medical purposes. It places a person in a temporary state of unconsciousness. Anesthesia is categorized into regional anesthesia or general anesthesia. Regional anesthesia is mainly used in cases in which only a particular region of the body needs to be numbed such as in childbirth. This book presents the complex subject of anesthesiology in the most comprehensible and easy to understand language. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest advances within this field. The readers would gain knowledge that would broaden their perspective about the subject matter.