US EditionA light-powered pacemaker gets hearts pumping
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A light-powered pacemaker gets hearts pumping
Each year, more than 2 million people worldwide undergo open-heart surgery. This involves opening the chest and briefly stopping the heart. Getting those hearts pumping again can sometimes be risky, says Pengju Li. A molecular engineer, he designs bioelectronic devices at the University of Chicago in Illinois. This tech treats diseases by stimulating muscles and the nervous system with electricity. Doctors might restart hearts by compressing t…
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