A Review of Methods for Non-Invasive Heart Rate Measurement on Wrist

When evaluating general health condition on a patient, heart rate is an essential indicator as it directly representative of the cardiac system state. Continuous measurement methods are required for ambulatory monitoring involved in preliminary diagnostic indicators diseases or stroke. The growing number recent developments wearable devices reflective increasing demand wrist-worn activity trackers fitness and applications. Indeed, wrist represents convenient location terms form factor acceptability patients. While most commercially-available based optical measurement, others were also developed, various physiological phenomena. This review focused located forearm more specifically wrist. For each method, mechanism described, associated transducers bio-signal acquisition well practical prototypes presented. Methods discussed their advantages, limitations suitability use. More specifically, superposition motion artefacts over signal interest one largest drawbacks these methods, when used out laboratory conditions. As such, artefact reduction techniques proposed literature presented discussed.