Visual scoring of photoplethysmography morphology for risk stratification in hemorrhagic shock: a prospective observational study
Authors' conclusion
Visual PPG scoring may support early bedside risk stratification in hemorrhagic patients
Study context
- Population
- Adults with hemorrhage in the ED of West China Hospital, August–October 2025461 analysed
- Participants
- 500 adults
- Exposure
- Visual PPG morphology score vs shock index, MAP, lactate and base excess
- Outcome
- 28-day all-cause mortality
- Follow-up
- 28 days
Methodological detailssingle-centre
- Single-centre
Main finding
As reported in the abstract
28-day mortality
| Group | AUC |
|---|---|
| Visual PPG score | 0.81 |
Visual PPG score
AUC0.81
Observational data: associations, not effects.
Secondary outcomes
| Outcome | Values |
|---|---|
| ICU admission | Visual PPG score AUC 0.88 |
Intensive care unit (ICU) admission
- Adding visual PPG score to routine clinical indicators increased AUC for ICU admission from 0.82 to 0.90
Inter-rater agreement
- Pairwise linear weighted kappa (good to excellent)
- 0.74, 0.99, and 0.75
- Fleiss' kappa (moderate overall agreement)
- 0.58
Original publication
Visual scoring of photoplethysmography morphology for risk stratification in hemorrhagic shock: a prospective observational study. Ann Intensive Care. Published 24 August 2026. doi:10.
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