NDLI: Pulse oximetry: fundamentals and technology update

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Pulse oximetry: fundamentals and technology update

Content Provider	Scilit
Author	Nitzan, Meir Romem, Ayal Koppel, Robert
Copyright Year	2014
Description	Pulse oximetry: fundamentals and technology update Meir Nitzan,1 Ayal Romem,2 Robert Koppel31Department of Physics/Electro-Optics, Jerusalem College of Technology, Jerusalem, Israel; 2Pulmonary Institute, Shaare Zedek Medical Center, Jerusalem, Israel; 3Neonatal/Perinatal Medicine, Cohen Children's Medical Center of New York/North Shore-LIJ Health System, New Hyde Park, NY, United States Oxygen saturation in the arterial blood (SaO2) provides information on the adequacy of respiratory function. SaO2 can be assessed noninvasively by pulse oximetry, which is based on photoplethysmographic pulses in two wavelengths, generally in the red and infrared regions. The calibration of the measured photoplethysmographic signals is performed empirically for each type of commercial pulse-oximeter sensor, utilizing in vitro measurement of SaO2 in extracted arterial blood by means of co-oximetry. Due to the discrepancy between the measurement of SaO2 by pulse oximetry and the invasive technique, the former is denoted as SpO2. Manufacturers of pulse oximeters generally claim an accuracy of 2%, evaluated by the standard deviation (SD) of the differences between SpO2 and SaO2, measured simultaneously in healthy subjects. However, an SD of 2% reflects an expected error of 4% (two SDs) or more in 5% of the examinations, which is in accordance with an error of 3%â
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4099100/pdf
ISSN	11791470
e-ISSN	11791470
DOI	10.2147/mder.s47319
Journal	Medical Devices: Evidence and Research
Volume Number	7
Language	English
Publisher	Informa UK Limited
Publisher Date	2014-07-01
Access Restriction	Open
Subject Keyword	Respiratory System Arterial Blood Oxygen Saturation Photoplethysmography Pulse Oximetry Venous Blood
Content Type	Text
Resource Type	Article
Subject	Medicine Biomedical Engineering

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