NDLI: Towards Using Photo-Plethysmogram Amplitude to Measure Blood Pressure During Sleep

Content Provider	Springer Nature Link
Author	Chua, Eric Chern Pin Redmond, Stephen J. McDarby, Gary Heneghan, Cor
Copyright Year	2010
Abstract	There is considerable interest in non-intrusive and reliable continuous ambulatory blood pressure measurement systems. Pulse amplitude is the peak to trough amplitude of the photo-plethysmogram signal. We compared pulse amplitude with a currently popular parameter, the pulse arrival time (PAT), for estimating continuous systolic blood pressure (SBP). Overnight sleep data from 18 young, healthy subjects (14 M 4 F, age 24 ± 5 years, BMI 23.8 ± 4.0 kg/m2) was analyzed. We found that pulse amplitude was more effective than PAT for estimating SBP during sleep. Mean coherence between pulse amplitude and SBP was significantly stronger than that for PAT [p < 0.001, 95% CI: 0.21–0.25 (finger), 0.11–0.14 (wrist)]. Correlation between pulse amplitude and SBP was significantly stronger than that for PAT [p < 0.001, 95% CI: 0.46–0.53 (finger), 0.13–0.20 (wrist)]. SBP estimation errors were significantly lower using pulse amplitude [p < 0.001, 95% CI: −1.55 to −1.29 mmHg (finger), −0.53 to −0.36 mmHg (wrist)]. We also found that while pulse amplitude was closely related to SBP, the relationship weakened during and around REM sleep (ANOVA of REM, transitional Wake-REM and transitional REM-Sleep versus other sleep states: F = 24.7, p < 0.001). These results suggest that pulse amplitude is potentially a more suitable measure than pulse arrival time for estimating continuous blood pressure.
Starting Page	945
Ending Page	954
Page Count	10
File Format	PDF
ISSN	00906964
Journal	Annals of Biomedical Engineering
Volume Number	38
Issue Number	3
e-ISSN	15739686
Language	English
Publisher	Springer US
Publisher Date	2010-01-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ambulatory blood pressure Photoplethysmogram PPG amplitude Pulse transit time Pulse arrival time Coherence Biochemistry Mechanics Biophysics and Biological Physics Biomedical Engineering Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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