This concise textbook describes a practical system for the assessment and management of the critically ill surgical patient. Based on the CCrISP course organized by The Royal College of Surgeons of England, the book provides practical advice on the management of critically ill surgical patients, whether on the ward following emergency admission or operation, in High Dependency or in the Intensive Care Unit. The approach taken focusses on 'what to do next': it is therefore particularly suitable for trainee surgeons engaged in acute surgical practice as well as those in preparation for postgraduate examinations.