Cuffless Blood Pressure Estimation From Wearable Photoplethysmography and Windkessel Model-Regularized Learning Approach

Adeeba Khan, Swarubini P J, Ryunosuke Kirita, Tomohiko Igasaki, Nagarajan Ganapathy (IIT Hyderabad, Kumamoto University)

IEEE Sensors Letters· 2026
PPGDOI

Summary

Adds a bounded Windkessel loss: arterial pressure must decay exponentially with a PPG-derived diastolic time constant. 10 healthy subjects, wearable finger PPG, rest + affective stimulation + Stroop. MAE SBP 4.10 ± 1.41, DBP 2.90 ± 1.20 mmHg; authors claim AAMI compliance (n = 10 can't meet AAMI's 85-subject requirement).

Key facts

Form Factor
finger
License
Not stated

Reported benchmarks

Cuffless blood pressure

windkessel-own-10 · MAE (mmHg) ↓

#1 of 1
4.10 / 2.9

Own 10 healthy subj, finger wearable; split unstated

Updated: Oct 11, 2026