Table 3.
Summary of readings from all four sensors (A, B, C and D) from four different positions on the left wrist of healthy volunteer P9; non-pulsatile component (DC) level (nW), the average PPG peak to peak (P-Pave), Perfusion Index (PI) average and SNR for both wavelengths; and the average SpO2 levels from both the plastic optical fibre (POF) and Masimo sensors.
| Sensor | Signal | DC Level (nW) |
P-Pave (nW) | PI (%) |
SNR | Average SpO2 (%) |
|
|---|---|---|---|---|---|---|---|
| POF | Masimo | ||||||
| A | Red | 502.8 | 0.20 | 0.04 | 6.63 | – | 98.9 |
| IR | 186.0 | – | – | – | |||
| B | Red | 420.7 | 0.84 | 0.19 | 7.19 | 98.1 | 98.3 |
| IR | 191.3 | 0.15 | 0.08 | 4.17 | |||
| C | Red | 475.8 | – | – | – | – | 99 |
| IR | 188.1 | – | – | – | |||
| D | Red | 408.9 | 0.52 | 0.13 | 5.98 | 99.5 | 99 |
| IR | 178.1 | 0.10 | 0.06 | 4.29 | |||