Postoperative monitoring

SummaryIt is possible to measure many physiological parameters in anaesthetic practice, and a multitude of monitors are available for the purpose. Extensive literature exists regarding the principles of operation of most of these monitors. Although the published evidence base to support the use of many of these monitors is either non-existent or weak, this does not mean that these monitors are of no value in patient management.In general surgical patients, the most common significant postoperative complications are cardiovascular and respiratory in nature. This article outlines pertinent details of monitoring these systems with reference to current topical areas, as well as broader issues regarding monitoring.Important aspects of monitoring other organ systems and healthcare structures are also considered. Issues regarding the rational choice of monitors, and the evidence for and limitations of these are explored. Future possible technologies are also considered, and a reading list provided.