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. 2023 Feb 23;23(5):2479. doi: 10.3390/s23052479

Figure 7.

Figure 7

The wearable systems applied in arterial pulse pressure monitoring. (a) Photograph of a patchable sensor attached on a wrist to measure the radial artery (left) and three typical types in radial artery measurements. (b) Two characteristic signals before and after exercise and magnified curve of pulse wave signal of heart rate and type of blood pressure. Reproduced with permission from ref. [216]. Copyright 2018 Wiley-VCH. (c) Photograph of a device for detection of wrist pulses and (d) original wrist pulses signals of a non-pregnant person and a pregnant woman. Reproduced with permission from ref. [63]. Copyright 2014 Wiley-VCH. (e) A wireless pulse measurement using GaN SAW wearable system. Reproduced with permission from ref. [38]. Copyright 2021 American Association for the Advancement of Science. (f) Illustration of bioimpedance blood pressure measurement. (g) Correlation between arterial blood pressure and bioimpedance. (h) Recognition performance of bioimpedance-monitoring system. Reproduced with permission from ref. [218]. Copyright 2022 Nature Publishing Group. (i) Illustration of piezoelectric dynamic response to arterial pulse and typical waveform. Reproduced with permission from ref. [219]. Copyright 2022 Wiley-VCHv.