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Soft wireless sternal patch to detect systemic vasoconstriction using photoplethysmography

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Title: Soft wireless sternal patch to detect systemic vasoconstriction using photoplethysmography
Authors: Nathan Zavanelli, Sung Hoon Lee, Matthew Guess, Woon-Hong Yeo
Source: iScience, Vol 26, Iss 3, Pp 106184- (2023)
Publisher Information: Elsevier, 2023.
Publication Year: 2023
Collection: LCC:Science
Subject Terms: Health sciences, Biological sciences, Biotechnology, Bioelectronics, Engineering, Science
More Details: Summary: Vasoconstriction is a crucial physiological process that serves as the body’s primary blood pressure regulation mechanism and a key marker of numerous harmful health conditions. The ability to detect vasoconstriction in real time would be crucial for detecting blood pressure, identifying sympathetic arousals, characterizing patient wellbeing, detecting sickle cell anemia attacks early, and identifying complications caused by hypertension medications. However, vasoconstriction manifests weakly in traditional photoplethysmogram (PPG) measurement locations, like the finger, toe, and ear. Here, we report a wireless, fully integrated, soft sternal patch to capture PPG signals from the sternum, an anatomical region that exhibits a robust vasoconstrictive response. With healthy controls, the device is highly capable of detecting vasoconstriction induced endogenously and exogenously. Furthermore, in overnight trials with patients with sleep apnea, the device shows a high agreement (r2 = 0.74) in vasoconstriction detection with a commercial system, demonstrating its potential use in portable, continuous, long-term vasoconstriction monitoring.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2589-0042
Relation: http://www.sciencedirect.com/science/article/pii/S2589004223002614; https://doaj.org/toc/2589-0042
DOI: 10.1016/j.isci.2023.106184
Access URL: https://doaj.org/article/71981aadeb1e4bd785a17bc2dd40bd72
Accession Number: edsdoj.71981aadeb1e4bd785a17bc2dd40bd72
Database: Directory of Open Access Journals
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  Data: iScience, Vol 26, Iss 3, Pp 106184- (2023)
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  Data: Summary: Vasoconstriction is a crucial physiological process that serves as the body’s primary blood pressure regulation mechanism and a key marker of numerous harmful health conditions. The ability to detect vasoconstriction in real time would be crucial for detecting blood pressure, identifying sympathetic arousals, characterizing patient wellbeing, detecting sickle cell anemia attacks early, and identifying complications caused by hypertension medications. However, vasoconstriction manifests weakly in traditional photoplethysmogram (PPG) measurement locations, like the finger, toe, and ear. Here, we report a wireless, fully integrated, soft sternal patch to capture PPG signals from the sternum, an anatomical region that exhibits a robust vasoconstrictive response. With healthy controls, the device is highly capable of detecting vasoconstriction induced endogenously and exogenously. Furthermore, in overnight trials with patients with sleep apnea, the device shows a high agreement (r2 = 0.74) in vasoconstriction detection with a commercial system, demonstrating its potential use in portable, continuous, long-term vasoconstriction monitoring.
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