Title :
A novel method for the measurement of oxygen saturation in arterial blood
Author :
Ashoka, R.K. ; George, Boby ; Madhu, M.N. ; Jagadeesh, Kumar V.
Author_Institution :
Dept. of Electr. Eng., IIT Madras, Chennai, India
Abstract :
A novel and noninvasive method of estimation of oxygen saturation in arterial blood (SpO2), employing the popular photoelectric plethysmographic (PPG) principle, is presented here. Based on a refined model for the attenuation of light in a PPG sensor, a simple method of computation of SpO2 that is not influenced by interfering parameters of a patient such as skin colour and quantum of intervening tissue between the source and the detector in a PPG sensor as well as sensor dependent parameters such as source intensity and detector sensitivity is identified. Preliminary results obtained on a prototype pulse oximeter, built and tested, demonstrate the practicality of the proposed method.
Keywords :
biomedical equipment; blood; haemodynamics; optical sensors; photoelectric devices; photoplethysmography; PPG sensor; arterial blood; detector sensitivity; interfering parameters; intervening tissue; light attenuation; noninvasive method; oxygen saturation measurement; popular photoelectric plethysmographic principle; prototype pulse oximeter; skin colour; source intensity; Attenuation; Blood; Calibration; Detectors; Equations; Fingers; Mathematical model; Biomedical signal processing; Non-invasive measurement; Oxygen saturation; Photoelectric plethysmography; Pulse oximeter;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944066
