title: Pulse oximetry.
abstract: The pulse oximeter provides a noninvasive, continuous, and generally valid measure of SaO2. Armed with a basic understanding of its operating principles and limitations, and the proper interpretation of SaO2, the emergency physician will find the pulse oximeter to be a useful instrument for the detection of hypoxia in infants and children.
mesh_terms: D001785:Blood Gas Monitoring, Transcutaneous; D002648:Child; D002675:Child, Preschool; D004867:Equipment Design; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis*; D007223:Infant; D010092:Oximetry / Q000295:instrumentation / Q000379:methods*