Key result
The EMFIT QS device reliably measured heart rate (95% limits of agreement -4.4 to 4.4 bpm) and respiration rate (-2.5 to 2.2 rpm) compared to ECG and RIP during overnight polysomnography.
Why the study?
The EMFIT QS enables contactless monitoring of heart rate and respiration rate under a bed mattress, but validation against standard overnight polysomnography measurements was needed.
Does the EMFIT QS device accurately measure heart rate and respiration rate compared to ECG and RIP in patients undergoing overnight polysomnography?
Population
33 patients measured in an overnight polysomnography
Comparison
EMFIT QS vs ECG and respiratory inductive plethysmography
Design
Validation study using Bland-Altman analysis
Authors
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Supports unobtrusive nocturnal monitoring in research settings; leaves open accuracy validation in clinical populations.
Observational (n=33)
Does the EMFIT QS device accurately measure heart rate and respiration rate compared to ECG and RIP in patients undergoing overnight polysomnography?
Effect estimate: HR LoA -4.4 to 4.4 bpm; RR LoA -2.5 to 2.2 rpm
The EMFIT QS device provides reliable, contactless measurement of heart and respiration rates during sleep, with potential applications in telemedicine and wellness monitoring.
Ranta et al. (2019) conducted an observational in Patients undergoing overnight polysomnography (n=33). EMFIT QS device vs. Electrocardiogram (ECG) and respiratory inductive plethysmography (RIP) was evaluated on Heart rate and respiration rate agreement (Bland-Altman analysis) (HR LoA -4.4 to 4.4 bpm; RR LoA -2.5 to 2.2 rpm). The EMFIT QS device reliably measured heart rate (95% limits of agreement -4.4 to 4.4 bpm) and respiration rate (-2.5 to 2.2 rpm) compared to ECG and RIP during overnight polysomnography.
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