Wearable E-Tattoo Monitors Heart Condition

Chest-conformable, wireless electro-mechanical e-tattoo for measuring multiple cardiac time intervals
“This work [from engineers at the University of Texas-Austin] presents a thin (200 µm), stretchable (20%), lightweight (2.5 g), wireless, and low-power (<3 mW) cardiac monitoring device that conforms to the human chest like a temporary tattoo sticker, correspondingly known as an e-tattoo. This chest e-tattoo features dual-mode electro-mechanical sensing—bio-electric cardiac signals via electrocardiography and mechanical cardiac rhythm via seismocardiography. A unique peripheral synchronization strategy between the two sensors enables the measurement of systolic time intervals like the pre-ejection period and the left ventricular ejection time with high accuracy (error = −0.44 ± 8.74 ms) while consuming very low power.” MORE
Image Credit: Wiley Online Library