Wireless non-invasive continuous respiratory monitoring with FMCW radar a clinical validation study
article
Altered respiratory rate is one of the first symptoms of medical conditions that require timely intervention, e.g., sepsis or opioid-induced respiratory depression. To facilitate continuous respiratory rate monitoring on general hospital wards a contactless, non-invasive, prototype monitor was developed using frequency modulated continuous wave radar. We aimed to study whether radar can reliably measure respiratory rate in postoperative patients. In a diagnostic cross-sectional study patients were monitored with the radar and the reference monitor (pneumotachograph during mechanical ventilation and capnography during spontaneous breathing). Eight patients were included; yielding 796 min of observation time during mechanical ventilation and 521 min during spontaneous breathing. After elimination of movement artifacts the bias and 95 % limits of agreement for mechanical ventilation and spontaneous breathing were −0.12 (−1.76 to 1.51) and −0.59 (−5.82 to 4.63) breaths per minute respectively. The radar was able to accurately measure respiratory rate in mechanically ventilated patients, but the accuracy decreased during spontaneous breathing. Chemicals / CAS morphine, 52-26-6, 57-27-2; paracetamol, 103-90-2
Topics
MonitoringRemoteRespiratory rateDiagnosisFrequency modulationHospitalsPatient monitoringRadarRadar systemsVentilationCross-sectional studyFrequency modulated continuous wave radarsMechanical ventilationRespiratory depressionRespiratory MonitoringRespiratory rateSpontaneous breathingContinuous wave radarmorphineparacetamoladultanalgesiaArticleartificial ventilationautomationbradypneabreathingbreathing patternbreathing ratecapnographcapnometrycontinuous respiratory monitoringcross-sectional studydiagnostic accuracyfemalefrequency modulated continuous wave radarhumanmalemiddle agednon invasive procedurepatient monitoringpneumotachographpostoperative carepostoperative painpostoperative periodpredictive valuepriority journalsensitivity and specificitytachypneatelecommunicationvalidation studyventilated patientwireless communicationalgorithmartifactmovement (physiology)physiologic monitoringproceduresreproducibilityrespiratory failuresignal processingwireless communicationAdultAlgorithmsArtifactsCross-Sectional StudiesFemaleHumansMaleMiddle AgedMonitoring, PhysiologicMovementPostoperative PeriodReproducibility of ResultsRespirationRespiration, ArtificialRespiratory InsufficiencyRespiratory RateSignal Processing, Computer-AssistedWireless Technology
TNO Identifier
954706
ISSN
13871307
Source
Journal of Clinical Monitoring and Computing, 30(6), pp. 797-805.
Publisher
Springer Netherlands
Pages
797-805
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