Key result
Wearable limb ballistocardiography-based wrist pulse transit time exhibited a strong association with both diastolic (r = 0.79; MAE = 5.1 mmHg) and systolic (r = 0.81; MAE = 7.6 mmHg) blood pressure, outperforming conventional pulse arrival time.
Why the study?
The study investigated the potential of wearable limb ballistocardiography to enable cuff-less blood pressure monitoring via pulse transit time.
Does wearable limb BCG-based PTT accurately estimate blood pressure compared to scale PTT and PAT in young healthy participants?
Population
22 young healthy participants under multiple BP-perturbing interventions
Comparison
Wrist PTT vs scale PTT vs PAT
Authors
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May facilitate cuffless BP via wearables; leaves open validation in larger cohorts before practice change.
Observational (n=22)
No
Does wearable limb BCG-based PTT accurately estimate blood pressure compared to scale PTT and PAT in young healthy participants?
Effect estimate: r = 0.79 (DBP) and r = 0.81 (SBP)
Wearable limb ballistocardiography via a wristband shows strong potential for convenient, cuff-less blood pressure monitoring.
Yousefian et al. (2019) conducted an observational in Healthy volunteers (n=22). Wearable limb ballistocardiography (BCG)-based pulse transit time (wrist PTT) vs. Whole-body BCG-based PTT (scale PTT) and pulse arrival time (PAT) was evaluated on Correlation and mean absolute error (MAE) between wrist PTT and reference blood pressure (r = 0.79 (DBP) and r = 0.81 (SBP)). Wearable limb ballistocardiography-based wrist pulse transit time exhibited a strong association with both diastolic (r = 0.79; MAE = 5.1 mmHg) and systolic (r = 0.81; MAE = 7.6 mmHg) blood pressure, outperforming conventional pulse arrival time.
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