Wearable ultrasound patch can monitor BP 4 cm below skin

Wearable Patch

A wearable ultrasound patch tracks blood pressure in a deep artery or vein. (Photo courtesy of Nature Biomedical Engineering). 

Source

Chonghe Wang/Nature Biomedical Engineering

Scientists have developed a wearable ultrasound device to measure central blood pressure (BP). It performed as well as a current noninvasive technique upon testing, according to a press release.