Key result
A smartphone-based blood pressure monitor using PPG technology achieved >90% average accuracy and strong correlation (>0.90, P<.001) for predicting reference BP values.
Why the study?
The study aimed to develop a user-friendly mobile personal health care system for elderly people to enable noninvasive, pervasive, and continuous estimation of blood pressure level and variability.
Does a wearable PPG-only sensor and smartphone app accurately estimate blood pressure compared to reference values?
Population
Three older adults and a validation sample of n=150
Comparison
Smartphone-based wearable PPG sensor BP estimation vs reference BP values
Design
Development and usability study
Authors
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May enable accessible BP monitoring; leaves open need for validation against full clinical accuracy standards before adoption.
Does a wearable PPG-only sensor and smartphone app accurately estimate blood pressure compared to reference values?
Effect estimate: Correlation >0.90
p-value: p=<.001
A novel PPG-based smartphone system showed high correlation for BP estimation, but only diastolic BP met clinical accuracy standards, indicating further development is needed before clinical use.
Mena et al. (2020) studied Hypertension (n=3). Smartphone-based blood pressure monitor using photoplethysmography (PPG) vs. Reference BP values was evaluated on Accuracy and correlation for predicting reference BP values (Correlation >0.90, p=<.001). A smartphone-based blood pressure monitor using PPG technology achieved >90% average accuracy and strong correlation (>0.90, P<.001) for predicting reference BP values.
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