This book represents the collective efforts of several excellent, clini cian-scientists who have devoted many years of their lives and many hours in each day to the application of physiological principles to the bedside care of critically ill patients. The universal challenge of car diovascular instability confronts all health care providers who treat patients in an acute care setting. Whether that be in the field or Emergency Department, general ward, operating suite or intensive care unit, all patients carry a common theme of potential life-taking processes which must to identified and...