Perfusion Index (PI)
The ratio of the pulsatile blood flow to the non-pulsatile blood in peripheral tissue used to measure peripheral perfusion.
Pleth Variability Index (PVi)
A measure of the dynamic changes in the perfusion index (PI) that occur during the respiratory cycle.
Signal IQ® (SIQ)
Located under the plethysmographic waveform. The height of the vertical line provides an assessment of the confidence in the SpO2 value displayed.
Plethysmographic (Pleth) Waveform
Real-time pulse pressure waveform.