Damianos Damianou

Learn More
Pulse oximetry essentially uses photoplethysmography to calculate oxygen saturation. Consequently the wavelength dependence of the photoplethysmogram(PPG) is of direct relevance to the performance of pulse oximeters. This paper describes this dependence of the PPG signal in both "reflection" and "transmission" modes from 450 to(More)
OBJECTIVE Our purpose was to investigate apposition of reflectance sensors as a possible source of artifact in fetal pulse oximetry. STUDY DESIGN A laboratory model was created to examine the effect of varying the distance of a reflectance probe from a subject's finger. The setup used two wavelengths (660 and 940 nm) and pulsatile (AC) and nonpulsatile(More)
  • 1