Paperdoi:10.1038/s41586-026-11336-3
Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)
Nature, 2026-11-05
TL;DR
Google Research reframes cuffless BP as multi-day hypertensive-state screening, not beat-to-beat mmHg. AI-PPG-ACC-HTN encodes 15 s wrist PPG + ACC magnitude with a self-supervised EfficientNet-B1 Waveform Encoder (~5.1 M params, 256-d embeddings), mean-aggregates embeddings over ~7 days of wear (hour-of-day then person-level), concatenates z-scored height, and runs L2-regularized logistic regression. No cuff calibration.
- Form factor: wrist
Caveats
- Closed weights; Nature 2026 / medRxiv; green+ACC per SI.
- Closed.
Results on ChatPPG leaderboards · 2
All leaderboards| Leaderboard | Method | Result | Rank |
|---|---|---|---|
| google-pixel-watch3-htn-abpm-196 sensitivityCuffless blood pressure estimation | AI-PPG-ACC-HTNCaveat: Closed weights; Nature 2026 / medRxiv; green+ACC per SI. | 0.658sensitivity, higher is better | #1 of 1 |
| GOOGLE-PIXEL-WATCH3-HTN-ABPM-CONFIRM-48 sensitivityCuffless blood pressure estimation | AI-PPG-ACC-HTNCaveat: Closed. | 0.784sensitivity, higher is better | #1 of 1 |
2 rows are credited to this paper. Ranks apply within each leaderboard only, as reported by the source.
Tasks & signals
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How it works
Cite this paper
Di Achille, P., Cai, L., Wu, J., Gao, M., Daryani, B., Wang, J., Khanna, U., Ko, H., Pathak, A., Malhotra, M., Patel, S., Shreibati, J. B., Juraschek, S. P., Rudrapatna, P., Thompson, M., & Poh, M.-Z. (2026). Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026). Nature. https://doi.org/10.1038/s41586-026-11336-3
Di Achille, Paolo, Lawrence Cai, Jiang Wu, Mingwu Gao, Bhavna Daryani, Jonathan Wang, and Utkarsh Khanna, et al. 2026. "Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)." Nature. https://doi.org/10.1038/s41586-026-11336-3.
Di Achille, P., Cai, L., Wu, J., Gao, M., Daryani, B., Wang, J. and Khanna, U. et al. (2026) 'Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)', Nature. doi: 10.1038/s41586-026-11336-3.
Di Achille, Paolo, et al. "Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)." Nature, 2026. https://doi.org/10.1038/s41586-026-11336-3.
P. Di Achille et al., "Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)," Nature, 2026, doi: 10.1038/s41586-026-11336-3.
@article{achille2026opportunistically,
title = {{Opportunistically Detecting Signs of Hypertension on a Consumer Smartwatch (AI-PPG-ACC-HTN; Di Achille, Poh et al., Nature 2026)}},
author = {Di Achille, Paolo and Cai, Lawrence and Wu, Jiang and Gao, Mingwu and Daryani, Bhavna and Wang, Jonathan and Khanna, Utkarsh and Ko, Ho and Pathak, Anupam and Malhotra, Mark and Patel, Shwetak and Shreibati, Jacqueline B. and Juraschek, Stephen P. and Rudrapatna, Pramod and Thompson, Matthew and Poh, Ming-Zher},
year = {2026},
journal = {Nature},
doi = {10.1038/s41586-026-11336-3}
}Added to the ChatPPG research hub
