Macrocirculation is not the sole determinant of respiratory induced variations in the reflection mode photoplethysmographic signal.

@article{Nilsson2003MacrocirculationIN,
  title={Macrocirculation is not the sole determinant of respiratory induced variations in the reflection mode photoplethysmographic signal.},
  author={Lena M Nilsson and Anders W. Johansson and Sigga Kalman},
  journal={Physiological measurement},
  year={2003},
  volume={24 4},
  pages={925-37}
}
Photoplethysmography (PPG) is a non-invasive optical technique sensitive to variations in blood volume and perfusion in the tissue. Reflection mode PPG may have clinical advantages over transmission mode PPG. To improve clinical usefulness and further development of the reflection mode PPG, studies on factors that modify the signal are warranted. We studied the coherence between the respiratory induced intensity variations (RIIV) of the PPG signal and respiratory synchronous pressure variations… CONTINUE READING