2022
DOI: 10.2196/36618
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Noncontact Longitudinal Respiratory Rate Measurements in Healthy Adults Using Radar-Based Sleep Monitor (Somnofy): Validation Study

Abstract: Background Respiratory rate (RR) is arguably the most important vital sign to detect clinical deterioration. Change in RR can also, for example, be associated with the onset of different diseases, opioid overdoses, intense workouts, or mood. However, unlike for most other vital parameters, an easy and accurate measuring method is lacking. Objective This study aims to validate the radar-based sleep monitor, Somnofy, for measuring RRs and investigate whet… Show more

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Cited by 6 publications
(3 citation statements)
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References 47 publications
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“…In the evaluation conducted by Ranta et al, in a population of 34 participants with a median age of 32 years, the Emfit had an MAE of 1.34 bpm for heart rate and a MAE of 0.59 cpm for breathing rate [33]. In contrast, in the evaluation conducted by Toften et al, Somnofy had an MAE of 0.18 cpm in a population of 37 participants with a mean age of 32.6 years [32]. Although the vital signs estimates of WSA have been used in large scale studies, there is no existing evaluation of WSA estimated vital signs in the literature to the best of our knowledge [52, 53].…”
Section: Discussionmentioning
confidence: 99%
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“…In the evaluation conducted by Ranta et al, in a population of 34 participants with a median age of 32 years, the Emfit had an MAE of 1.34 bpm for heart rate and a MAE of 0.59 cpm for breathing rate [33]. In contrast, in the evaluation conducted by Toften et al, Somnofy had an MAE of 0.18 cpm in a population of 37 participants with a mean age of 32.6 years [32]. Although the vital signs estimates of WSA have been used in large scale studies, there is no existing evaluation of WSA estimated vital signs in the literature to the best of our knowledge [52, 53].…”
Section: Discussionmentioning
confidence: 99%
“…To realise the potential of contactless technologies for monitoring vital signs such as heart rate and breathing rate in the community, the accuracy and reliability of their measurements need to be evaluated in relevant populations. While the validity of the heart rate and breathing rate estimates collected from a few contactless technologies has been evaluated in younger populations, to the best of our knowledge, there are no vital signs evaluation studies in older adults (> 65 years) although these devices have been implemented in longitudinal studies [13,30,[32][33][34]. Here, we have evaluated the accuracy of heart rate and breathing rate measurements collected from three contactless technologies (a bedside radar and two undermattress devices) against polysomnography (PSG) electrocardiogram (ECG) derived heart rate and respiratory inductance plethysmography thorax (RIP thorax) derived breathing rate in a laboratory setting.…”
Section: Introductionmentioning
confidence: 99%
“…In recent years, noncontact sensor technology has been developed to address these issues and enable continuous monitoring of vital signs [ 12 , 13 , 14 ]. Noncontact sensors used for vital sign monitoring include cameras [ 15 ], radar [ 16 ], and thermography [ 17 ]. These sensors need to record the movement of the patient’s thorax and facial condition, and the less obstruction between the sensor and the body, the better.…”
Section: Introductionmentioning
confidence: 99%