Stanford professor Zhenan Bao has developed a flexible, skin-like heart monitor, worn under an adhesive bandage on the wrist. This non-invasive method could replace intravascular catheters, which create a high risk of infection, making them impractical for newborns and high-risk patients. An external monitor could give doctors a safer way to gather information about the heart, especially during infant surgeries. Bao’s team is working with other Stanford researchers to make the device completely wireless.