APICE 2004 has been organised to provide precise answers to these issues. In particular, considerable emphasis has been given to the reviews regarding the most important aspects - or the most significant clinical developments - in the sectors involving variety of functions: neurological, respiratory and cardiovascular, gastrointestinal, metabolism and perfusion; trauma infections, sepsis and organ failure; perioperative medicine and life support techniques; information technology dedicated to clinical medicine, but also as a means of information and education. The contributing authors are all part of leading research groups at the international level in the various sectors presented in the volume.