Table 5 The main morphological PPG signal features
From: Investigating the correlation between smoking and blood pressure via photoplethysmography
PPG feature | Description |
|---|---|
sa | Systolic amplitude |
Da | Diastolic amplitude |
SA | Systolic Area |
DA | Diastolic Area |
IPA | Inflection Point Area = SA/DA |
ST | Systolic Time |
DT | Diastolic Time |
PI | Pulse Interval |
SI | Stiffness Index = sa/DT |
PPI | Peak-to-Peak Interval |
PR | Pulse Rate = 60/PPI |
FWHM | Full Width at Half Maximum |
sa-DT-ratio | Systolic amplitude to diastolic time ratio |
AI | Augmentation Index = sa/Da |