The theory and application of pulse oximetry

Pulse oximetry is widely used in the prehospital environment, yet researchers question whether health professionals fully understand the theory to support the practical application of its use.This article explores the fundamental theory of pulse oximetry to give applied understanding. From a prehospital perspective, it details and examines the advantages and limitations of this observational aid, which must be considered when making clinical decisions regarding a patient's care.

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