Abstract
Pulse rate, body temperature, blood pressure, and respiratory rate are four vital signs indicating health status of a patient. Oxygen saturation of arterial blood (SaO2) is regarded as fifth vital sign of health status. Pulse oximeters are used in post-operative intensive care units for monitoring pulse rate and SaO2. They make non-invasive simultaneous estimation of pulse rate and SaO2 using photoplethysmogram (PPG) signals captured at red and IR wavelengths. This chapter describes the concept of oximetry, importance of non-invasive medical measurements, principle of pulse oximetry, and the block diagram approach for the design of pulse oximeters. It also presents an exhaustive review on various methods in-vogue for SaO2 estimation, identifies the problems associated with pulse oximeters. The critical limitation is that commercial pulse oximeters are as accurate as their calibration curves. Finally, it presents state-of-the-art research aimed at performance enhancement of pulse oximeters and directions for future work.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
