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Accelerometry-Based Estimation of Respiratory Rate for Post-Intensive Care Patient Monitoring

Jarchi, Delaram and Rodgers, Sarah J and Tarassenko, Lionel and Clifton, David A (2018) 'Accelerometry-Based Estimation of Respiratory Rate for Post-Intensive Care Patient Monitoring.' IEEE Sensors Journal, 18 (12). pp. 4981-4989. ISSN 1530-437X

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This paper evaluates the use of accelerometers for continuous monitoring of respiratory rate (RR), which is an important vital sign in post-intensive care patients or those inside the intensive care unit (ICU). The respiratory rate can be estimated from accelerometer and photoplethysmography (PPG) signals for patients following ICU discharge. Due to sensor faults, sensor detachment, and various artifacts arising from motion, RR estimates derived from accelerometry and PPG may not be sufficiently reliable for use with existing algorithms. This paper described a case study of 10 selected patients, for which fewer RR estimates have been obtained from PPG signals in comparison to those from accelerometry. We describe an algorithm for which we show a maximum mean absolute error between estimates derived from PPG and accelerometer of 2.56 breaths/min. Our results obtained using the 10 selected patients are highly promising for estimation of RR from accelerometers, where significant agreements have been observed with the PPG-based RR estimates in many segments and across various patients. We present this research as a step towards producing reliable RR monitoring systems using low-cost mobile accelerometers for monitoring patients inside the ICU or on the ward (post-ICU).

Item Type: Article
Uncontrolled Keywords: Respiratory rate (RR); accelerometer; photo-plethysmography (PPG); adaptive line enhancer (ALE); auto-regressive (AR)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > R Medicine (General)
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 11 Jun 2019 09:22
Last Modified: 23 Sep 2022 19:32

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