Endocrinology is a rapidly developing field with many new concepts. In addition, many new hormones have been described since 1960. The structural analysis and synthesis of several intestinal hormones such as gastrin, secretin, glucagon and cholecystokinin have been achieved. Several hypothalamic hormones controlling pituitary function have been identified and in certain cases synthesized. The existence of hormonal peptides se­ creted from ectopic sites has been recognized. The development of new techniques of hormone assay has stimulated studies on the effects of anesthetics on the endocrine system. Although the endocrine response to anesthesia is less than its response to major surgical procedures, the effects of anesthesia on metabolism and on the autonomie nervous system are substantial. The primary purpose of this book is to increase the safety of patients undergoing anesthesia by making available the latest developments in this field. The major subjects examined in the book are endocrine responses to anesthesia and surgery, the effects of endocrine disease on anesthesia and sur­ gery, and pre-operative and post-operative management of patients with endocrine disease. The book is designed for students, residents and practicing physicians in the field of anesthesia and surgery. Many tables and figures are empIoyed to improve the presentation, particuIarly those relating to pharmacology and to the practical aspects of therapy.