Evaluation of a novel cuffless photoplethysmography-based wristband for measuring blood pressure according to the regulatory standards.
Eur Heart J Digit Health
; 5(3): 335-343, 2024 May.
Article
in En
| MEDLINE
| ID: mdl-38774367
ABSTRACT
Aims:
Elevated blood pressure (BP) is a key risk factor in cardiovascular diseases. However, obtaining reliable and reproducible BP remains a challenge. This study, therefore, aimed to evaluate a novel cuffless wristband, based on photoplethysmography (PPG), for continuous BP monitoring. Methods andresults:
Predictions by a PPG-guided algorithm were compared to arterial BP measurements (in the sub-clavian artery), obtained during cardiac catheterization. Eligible patients were included and screened based on AAMI/European Society of Hypertension (ESH)/ISO Universal Standard requirements. The machine learning-based BP algorithm required three cuff-based initialization measurements in combination with â¼100 features (signal-derived and patient demographic-based). Ninety-seven patients and 420 samples were included. Mean age, weight, and height were 67.1 years (SD 11.1), 83.4â kg (SD 16.1), and 174â cm (SD 10), respectively. Systolic BP was ≤100â mmHg in 48 samples (11%) and ≥160â mmHg in 106 samples (25%). Diastolic BP was ≤70â mmHg in 222 samples (53%) and ≥85â mmHg in 99 samples (24%). The algorithm showed mean errors of ±3.7â mmHg (SD 4.4â mmHg) and ±2.5â mmHg (SD 3.7â mmHg) for systolic and diastolic BP, respectively. Similar results were observed across all genders and skin colours (Fitzpatrick I-VI).Conclusion:
This study provides initial evidence for the accuracy of a PPG-based BP algorithm in combination with a cuffless wristband across a range of BP distributions. This research complies with the AAMI/ESH/ISO Universal Standard, however, further research is required to evaluate the algorithms performance in light of the remaining European Society of Hypertension recommendations. Clinical trial registration www.clinicaltrials.gov, NCT05566886.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Eur Heart J Digit Health
Year:
2024
Document type:
Article
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