Results 241 to 250 of about 17,709 (302)

Photoplethysmography and nociception

Acta Anaesthesiologica Scandinavica, 2009
Photoplethysmography (PPG), i.e. pulse oximetric wave, is a non‐invasive technique that is used in anaesthesia monitoring primarily to monitor blood oxygenation. The PPG waveform resembles that of the arterial blood pressure but instead of pressure it is related to the volume changes in the measurement site and hence contains information related to the
I, Korhonen, A, Yli-Hankala
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Photoplethysmography

Best Practice & Research Clinical Anaesthesiology, 2014
The photoplethysmographic (PPG) waveform, also known as the pulse oximeter waveform, is one of the most commonly displayed clinical waveforms. First described in the 1930s, the technology behind the waveform is simple. The waveform, as displayed on the modern pulse oximeter, is an amplified and highly filtered measurement of light absorption by the ...
Aymen A, Alian, Kirk H, Shelley
openaire   +2 more sources

Ultralow-Power Photoplethysmography (PPG) Sensors: A Methodological Review

IEEE Sensors Journal, 2023
Photoplethysmography (PPG) sensors are used to accurately, instantaneously, and noninvasively measure vital signs to provide a real-time indication of overall physical health and long-term well-being.
Zobair Ebrahimi, B. Gosselin
semanticscholar   +1 more source

Artifact reduction in photoplethysmography

Applied Optics, 1998
Motion artifact reduction in photoplethysmography, and therefore by implication in pulse oximetry, is achieved with a novel nonlinear methodology. The physical origins of the photoplethysmographic signals are explored in relation to a nonlinear measure of the observed intensity fluctuations.
M J, Hayes, P R, Smith
openaire   +2 more sources