Key result
Contactless heart rate monitoring using speckle vibrometry extracted heart rate through varying textile thicknesses with an average error of less than 3 beats per minute compared to ECG.
Why the study?
General ward heart rate monitoring currently relies on manual or ECG spot-checks, whereas more frequent contactless measurements could enable earlier detection of adverse cardiac events.
Does contactless speckle vibrometry accurately measure heart rate through textiles compared to ECG in healthy subjects?
Does contactless speckle vibrometry accurately measure heart rate through textiles compared to ECG in healthy subjects?
Speckle vibrometry is a feasible contactless alternative for heart rate monitoring through textiles in a resting supine position, achieving an average error of less than 3 BPM compared to ECG.
Supports feasibility of contactless HR monitoring through textiles at rest; leaves open validation in clinical populations and dynamic conditions.
Monitoring of heart rate in patients in the general ward is necessary to assess the clinical situation of the patient. Currently, this is done via spot-checks on pulse rate manually or on heart rate using Electrocardiogram (ECG) by nurses. More frequent measurements would allow early detection of adverse cardiac events. In this work, we investigate a contactless measurement setup combined with a signal processing pipeline, which is based on speckle vibrometry (SV), to perform contactless heart rate monitoring of human subjects in a supine position, mimicking a resting scenario in the general ward. Our results demonstrate the feasibility of extracting heart rate with SV through varying textile thicknesses (i.e., 8 mm, 32 mm and 64 mm), with an error smaller than 3 beats per minute on average compared to the ground-truth heart rate derived from ECG.
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Que et al. (2022) studied Heart rate monitoring. Speckle vibrometry (SV) vs. Electrocardiogram (ECG) was evaluated on Heart rate extraction error compared to ground-truth ECG. Contactless heart rate monitoring using speckle vibrometry extracted heart rate through varying textile thicknesses with an average error of less than 3 beats per minute compared to ECG.
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