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Un, Ka-Chun; Wong, Chun-Ka; Lau, Yuk-Ming; Lee, Jeffrey Chun-Yin; Tam, Frankie Chor-Cheung; Lai, Wing-Hon; Lau, Yee-Man; Chen, Hao; Wibowo, Sandi; Zhang, Xiaozhu; Yan, Minghao; Wu, Esther; Chan, Soon-Chee; Lee, Sze-Ming; Chow, Augustine; Tong, Raymond Cheuk-Fung; Majmudar, Maulik D; Rajput, Kuldeep Singh; Hung, Ivan Fan-Ngai; Siu, Chung-Wah
Scientific reports, 02/2021, Volume: 11, Issue: 1Journal Article
Patients infected with SARS-CoV-2 may deteriorate rapidly and therefore continuous monitoring is necessary. We conducted an observational study involving patients with mild COVID-19 to explore the potentials of wearable biosensors and machine learning-based analysis of physiology parameters to detect clinical deterioration. Thirty-four patients (median age: 32 years; male: 52.9%) with mild COVID-19 from Queen Mary Hospital were recruited. The mean National Early Warning Score 2 (NEWS2) were 0.59 ± 0.7. 1231 manual measurement of physiology parameters were performed during hospital stay (median 15 days). Physiology parameters obtained from wearable biosensors correlated well with manual measurement including pulse rate (r = 0.96, p < 0.0001) and oxygen saturation (r = 0.87, p < 0.0001). A machine learning-derived index reflecting overall health status, Biovitals Index (BI), was generated by autonomous analysis of physiology parameters, symptoms, and other medical data. Daily BI was linearly associated with respiratory tract viral load (p < 0.0001) and NEWS2 (r = 0.75, p < 0.001). BI was superior to NEWS2 in predicting clinical worsening events (sensitivity 94.1% and specificity 88.9%) and prolonged hospitalization (sensitivity 66.7% and specificity 72.7%). Wearable biosensors coupled with machine learning-derived health index allowed automated detection of clinical deterioration.
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