FMCW-Radar-Based Vital-Sign Monitoring of Multiple Patients

2019 ◽  
Author(s):  
Jose-Maria Munoz-Ferreras ◽  
Jing Wang ◽  
Zhengyu Peng ◽  
Changzhi Li ◽  
Roberto Gomez-Garcia
Keyword(s):  
Vital Sign ◽  
Fmcw Radar ◽  
Multiple Patients

scholarly journals Collimated Beam FMCW Radar for Vital Sign Patient Monitoring

2019 ◽  
Vol 67 (8) ◽  
pp. 5073-5080 ◽  
Author(s):  
Arnau Prat ◽  
Sebastian Blanch ◽  
Albert Aguasca ◽  
Jordi Romeu ◽  
Antoni Broquetas
Keyword(s):  
Vital Sign ◽  
Patient Monitoring ◽  
Fmcw Radar ◽  
Collimated Beam

scholarly journals Avatar-based versus conventional vital signs display in a central monitor for monitoring multiple patients: A multicenter computer-based laboratory study

2019 ◽  
Author(s):  
Olivier Garot ◽  
Julian Rössler ◽  
Juliane Pfarr ◽  
Michael T. Ganter ◽  
Donat R. Spahn ◽  
...  
Keyword(s):  
Patient Safety ◽  
Laboratory Study ◽  
Situation Awareness ◽  
Vital Sign ◽  
Vital Signs ◽  
Waveform Data ◽  
Perceived Workload ◽  
Computer Based ◽  
Nasa Tlx ◽  
Multiple Patients

Abstract Background Maintaining adequate situation awareness is crucial for patient safety. Previous studies found that the use of avatar-based monitoring (Visual Patient Technology) improved the perception of vital signs compared to conventional monitoring showing numerical and waveform data; and was further associated with a reduction of perceived workload. In this study, we aimed to evaluate the effectiveness of Visual Patient Technology on perceptive performance and perceived workload when monitoring multiple patients at the same time, such as in central station monitors in intensive care units or operating rooms.Methods A prospective, within-subject, computer-based laboratory study was performed in two tertiary care hospitals in Switzerland in 2018. Thirty-eight physician and nurse anesthetists volunteered for the study. The participants were shown four different central monitor scenarios in sequence, where each scenario displayed two critical and four healthy patients simultaneously for 10 or 30 seconds. After each scenario, participants had to recall the vital signs of the critical patients. Perceived workload was assessed with the National Aeronautics and Space Association Task-Load-Index (NASA TLX) questionnaire.Results In the 10-second scenarios, the median number of perceived vital signs significantly improved from 7 to 11 using avatar-based versus conventional monitoring with a median of differences of 5 vital signs, p < 0.001. At the same time, the median NASA TLX scores were significantly lower for avatar-based monitoring (67 vs. 77) with a median of differences of 5 points, p = 0.024. In the 30-second scenarios, vital sign perception and workload did not differ significantly.Conclusions In central monitor multiple patient monitoring, we found a significant improvement of vital sign perception and reduction of perceived cognitive workload using Visual Patient Technology, compared to conventional monitoring. The technology enabled improved assessment of patient status and may, thereby, increase situation awareness and enhance patient safety.

scholarly journals Vital Sign Monitoring Using FMCW Radar in Various Sleeping Scenarios

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6505
Author(s):  
Emmi Turppa ◽  
Juha M. Kortelainen ◽  
Oleg Antropov ◽  
Tero Kiuru
Keyword(s):  
Heart Rate ◽  
Remote Monitoring ◽  
Vital Sign ◽  
Continuous Wave ◽  
Real Life ◽  
Vital Signs ◽  
Absolute Error ◽  
Physical Contact ◽  
Radar Signal ◽  
Fmcw Radar

Remote monitoring of vital signs for studying sleep is a user-friendly alternative to monitoring with sensors attached to the skin. For instance, remote monitoring can allow unconstrained movement during sleep, whereas detectors requiring a physical contact may detach and interrupt the measurement and affect sleep itself. This study evaluates the performance of a cost-effective frequency modulated continuous wave (FMCW) radar in remote monitoring of heart rate and respiration in scenarios resembling a set of normal and abnormal physiological conditions during sleep. We evaluate the vital signs of ten subjects in different lying positions during various tasks. Specifically, we aim for a broad range of both heart and respiration rates to replicate various real-life scenarios and to test the robustness of the selected vital sign extraction methods consisting of fast Fourier transform based cepstral and autocorrelation analyses. As compared to the reference signals obtained using Embla titanium, a certified medical device, we achieved an overall relative mean absolute error of 3.6% (86% correlation) and 9.1% (91% correlation) for the heart rate and respiration rate, respectively. Our results promote radar-based clinical monitoring by showing that the proposed radar technology and signal processing methods accurately capture even such alarming vital signs as minimal respiration. Furthermore, we show that common parameters for heart rate variability can also be accurately extracted from the radar signal, enabling further sleep analyses.

scholarly journals Avatar-based versus conventional vital signs display in a central monitor for monitoring multiple patients: A multicenter computer-based laboratory study.

2019 ◽  
Author(s):  
Olivier Garot ◽  
Julian Rössler ◽  
Juliane Pfarr ◽  
Michael T. Ganter ◽  
Donat R. Spahn ◽  
...  
Keyword(s):  
Patient Safety ◽  
Laboratory Study ◽  
Situation Awareness ◽  
Vital Sign ◽  
Vital Signs ◽  
Waveform Data ◽  
Perceived Workload ◽  
Computer Based ◽  
Nasa Tlx ◽  
Multiple Patients

Abstract Background Maintaining adequate situation awareness is crucial for patient safety. Previous studies found that the use of avatar-based monitoring (Visual Patient Technology) improved the perception of vital signs compared to conventional monitoring showing numerical and waveform data; and was further associated with a reduction of perceived workload. In this study, we aimed to evaluate the effectiveness of Visual Patient Technology on perceptive performance and perceived workload when monitoring multiple patients at the same time, such as in central station monitors in intensive care units or operating rooms.Methods A prospective, within-subject, computer-based laboratory study was performed in two tertiary care hospitals in Switzerland in 2018. Thirty-eight physician and nurse anesthetists volunteered for the study. The participants were shown four different central monitor scenarios in sequence, where each scenario displayed two critical and four healthy patients simultaneously for 10 or 30 seconds. After each scenario, participants had to recall the vital signs of the critical patients. Perceived workload was assessed with the National Aeronautics and Space Association Task-Load-Index (NASA TLX) questionnaire.Results In the 10-second scenarios, the median number of perceived vital signs significantly improved from 7 to 11 using avatar-based versus conventional monitoring with a median of differences of 5 vital signs, p < 0.001. At the same time, the median NASA TLX scores were significantly lower for avatar-based monitoring (67 vs. 77) with a median of differences of 5 points, p = 0.024. In the 30-second scenarios, vital sign perception and workload did not differ significantly.Conclusions In central monitor multiple patient monitoring, we found a significant improvement of vital sign perception and reduction of perceived cognitive workload using Visual Patient Technology, compared to conventional monitoring. The technology enabled improved assessment of patient status and may, thereby, increase situation awareness and enhance patient safety.

Sign in / Sign up

Export Citation Format

Share Document