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- W4384163051 abstract "Near-infrared spectroscopy (NIRS) intensity signals provide useful additional physiological information of which the most prominent one is the pulsatile fluctuation by heartbeats. This allows for the extraction of heart rate (HR), one of the primary clinical indicators of health in neonates. In this study, we propose a novel algorithm, NHR (NIRS HR), for extracting HR from NIRS signals acquired from neonates admitted to the neonatal intensive care unit. After parental consent, we recorded synchronously NIRS, at 100 Hz, and reference HR, at 1 Hz, from ten newborn infants (gestational age = 38 ± 5 weeks; 3092 ± 990 grams). The NHR algorithm consists of two main parts. The first part includes four steps implemented once on the whole NIRS measurement: preprocessing, HR frequency bandwidth determination, interquartile range computation, and segmentation. The second part includes three steps implemented on each signal segment: motion artifact detection, signal quality assessment, and HR computation. We compared the NHR algorithm with two existing algorithms. The results showed that the proposed NHR algorithm provides a significantly (p<0.05) higher correlation (r=99.5%) and lower Bland-Altman ratio (BAR=3.6%) between the extracted and reference HRs, compared to the existing algorithms. Extracting HR from NIRS in a clinical setting of critically ill neonates admitted to neonatal intensive care is feasible. With NIRS and HR combined in a single monitoring system, it is possible to have a perfectly time-synced integrated analysis of cerebral hemodynamics as well as systemic hemodynamics and autonomic nervous system tone." @default.
- W4384163051 created "2023-07-14" @default.
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- W4384163051 date "2023-01-01" @default.
- W4384163051 modified "2023-10-14" @default.
- W4384163051 title "Heart Rate Extraction From Neonatal Near-Infrared Spectroscopy Signals" @default.
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- W4384163051 doi "https://doi.org/10.1109/tim.2023.3295015" @default.
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