Spectral analysis of AC and DC components of the pulse photoplethysmograph at rest and during induction of anaesthesia.

@article{Larsen1997SpectralAO,
  title={Spectral analysis of AC and DC components of the pulse photoplethysmograph at rest and during induction of anaesthesia.},
  author={Peter Larsen and Mike Harty and Mona J. Thiruchelvam and Duncan C Galletly},
  journal={International journal of clinical monitoring and computing},
  year={1997},
  volume={14 2},
  pages={89-95}
}
We examined spectral components of beat to beat variability in AC and DC signals of the reflectance photoplethysmograph at finger and earlobe sites in 20 resting volunteers and 20 patients during propofol, alfentanil, isoflurane, nitrous oxide anaesthesia. We observed that at rest, the majority of spectral power at both sites and in both signals was in the… CONTINUE READING