Anesthesiology and Pain Management contains the edited presentations of the 39th Annual Postgraduate Course in Anesthesiology, February 1994. The chapters reflect new data concepts within the general framework of pain research and basic science', andclinical topics in pain management'. The purpose of the textbook is to serve as a vehicle to bring many of the latest concepts in anesthesiology to those who did not attend the conference, within a short time of the formal presentation. Each chapter is a brief but sharply focused glimpse of the current interests in anesthesia. This volume, as well as past and future volumes, reflects the rapid and continuing evolution of anesthesiology in the late twentieth