A concisely written, well illustrated book that explains in depth the principles of measurement by pulse oximetry and the clinical application. Also informs users on the technology, physiology and limitations of the technique. Clear line diagrams show the fundamental principles of pulse oximetry. This will be an invaluable guide to those who use anaesthetic measurement on how the machines work and how to get the best out of the techniques. This revised edition incorporates corrections to the text and an entirely new chapter on fetal pulse oximetry.