Sagirova, Zhanna; Kuznetsova, Natalia; Gogiberidze, Nana; Gognieva, Daria; Suvorov, Aleksandr; Chomakhidze, Petr; Omboni, Stefano; Saner, Hugo; Kopylov, Philippe (2021). Cuffless Blood Pressure Measurement Using a Smartphone-Case Based ECG Monitor with Photoplethysmography in Hypertensive Patients. Sensors, 21(10), p. 3525. MDPI 10.3390/s21103525
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The availability of simple, accurate, and affordable cuffless blood pressure (BP) devices has the potential to greatly increase the compliance with measurement recommendations and the utilization of BP measurements for BP telemonitoring. The aim of this study is to evaluate the correlation between findings from routine BP measurements using a conventional sphygmomanometer with the results from a portable ECG monitor combined with photoplethysmography (PPG) for pulse wave registration in patients with arterial hypertension.
METHODS
The study included 500 patients aged 32-88 years (mean 64 ± 7.9 years). Mean values from three routine BP measurements by a sphygmomanometer with cuff were selected for comparison; within one minute after the last measurement, an electrocardiogram (ECG) was recorded for 3 min in the standard lead I using a smartphone-case based single-channel ECG monitor (CardioQVARK®-limited responsibility company "L-CARD", Moscow, Russia) simultaneously with a PPG pulse wave recording. Using a combination of the heart signal with the PPG, levels of systolic and diastolic BP were determined based on machine learning using a previously developed and validated algorithm and were compared with sphygmomanometer results.
RESULTS
According to the Bland-Altman analysis, SD for systolic BP was 3.63, and bias was 0.32 for systolic BP. SD was 2.95 and bias was 0.61 for diastolic BP. The correlation between the results from the sphygmomanometer and the cuffless method was 0.89 (p = 0.001) for systolic and 0.87 (p = 0.002) for diastolic BP.
CONCLUSION
Blood pressure measurements on a smartphone-case without a cuff are encouraging. However, further research is needed to improve the accuracy and reliability of clinical use in the majority of patients.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine (ISPM) |
UniBE Contributor: |
Saner, Hugo Ernst |
Subjects: |
600 Technology > 610 Medicine & health 300 Social sciences, sociology & anthropology > 360 Social problems & social services |
ISSN: |
1424-8220 |
Publisher: |
MDPI |
Language: |
English |
Submitter: |
Andrea Flükiger-Flückiger |
Date Deposited: |
08 Jun 2021 15:53 |
Last Modified: |
07 Aug 2024 15:45 |
Publisher DOI: |
10.3390/s21103525 |
PubMed ID: |
34069396 |
Additional Information: |
Hugo Saner corresponding author (equally). |
Uncontrolled Keywords: |
CardioQVARK PPG monitor blood pressure blood pressure measurement photoplethysmography portable ECG monitor pulse wave analysis smartphone telemedicine |
BORIS DOI: |
10.48350/156745 |
URI: |
https://boris.unibe.ch/id/eprint/156745 |
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