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Paperdoi:10.2174/157340312801215782

On the Analysis of Fingertip Photoplethysmogram Signals

Venue listed2012Added Oct 29, 2026

  • ME

Authors: Mohamed Elgendi

Curr. Cardiol. Rev. 2012;8:14–25

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TL;DR

A review of the fingertip PPG waveform. It covers the types of artifact that corrupt the signal, the characteristic waveform features (systolic peak, dicrotic notch, diastolic peak), the acceleration or second-derivative plethysmogram, and existing indices used for diagnosis. It argues the waveform holds information beyond pulse oximetry and heart rate.

  • Form factor: finger

Abstract

Photoplethysmography (PPG) is used to estimate the skin blood flow using infrared light. Researchers from different domains of science have become increasingly interested in PPG because of its advantages as non-invasive, inexpensive, and convenient diagnostic tool. Traditionally, it measures the oxygen saturation, blood pressure, cardiac output, and for assessing autonomic functions. Moreover, PPG is a promising technique for early screening of various atherosclerotic pathologies and could be helpful for regular GP-assessment but a full understanding of the diagnostic value of the different features is still lacking. Recent studies emphasise the potential information embedded in the PPG waveform signal and it deserves further attention for its possible applications beyond pulse oximetry and heart-rate calculation. Therefore, this overview discusses different types of artifact added to PPG signal, characteristic features of PPG waveform, and existing indexes to evaluate for diagnoses.

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Tasks & signals

Tasks

Signal denoising

Signals

PPG

Keywords

ReviewWaveformAPGSDPPGArtifactsLandmark

How it works

How Method works: Setup → Method → TargetSetup: Signals (PPG); Wavelengths (IR); Form factor (finger). Method: Method. Target: Signal denoising.SetupSignals: PPGSignalsPPGWavelengths: IRWavelengthsIRForm factor: fingerForm factorfingerMethodMethodTargetSignal denoisingSignal denoising
Wavelengths
IR

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Elgendi, M. (2012). On the Analysis of Fingertip Photoplethysmogram Signals. Curr. Cardiol. Rev. 2012, 8, 14–25. https://doi.org/10.2174/157340312801215782
Elgendi, Mohamed. 2012. "On the Analysis of Fingertip Photoplethysmogram Signals." Curr. Cardiol. Rev. 2012 8: 14–25. https://doi.org/10.2174/157340312801215782.
Elgendi, M. (2012) 'On the Analysis of Fingertip Photoplethysmogram Signals', Curr. Cardiol. Rev. 2012, 8, pp. 14–25. doi: 10.2174/157340312801215782.
Elgendi, Mohamed "On the Analysis of Fingertip Photoplethysmogram Signals." Curr. Cardiol. Rev. 2012, vol. 8, 2012, pp. 14–25. https://doi.org/10.2174/157340312801215782.
M. Elgendi, "On the Analysis of Fingertip Photoplethysmogram Signals," Curr. Cardiol. Rev. 2012, vol. 8, pp. 14–25, 2012, doi: 10.2174/157340312801215782.
@article{elgendi2012analysis,
  title         = {{On the Analysis of Fingertip Photoplethysmogram Signals}},
  author        = {Elgendi, Mohamed},
  year          = {2012},
  journal       = {Curr. Cardiol. Rev. 2012},
  volume        = {8},
  pages         = {14--25},
  doi           = {10.2174/157340312801215782}
}

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