Engineers at the University of California San Diego unveiled a wearable ultrasound patch designed for continuous fetal monitoring throughout pregnancy, aiming to reduce reliance on intermittent ultrasound visits and operator expertise. The approach is positioned for improved surveillance of high-risk pregnancies by capturing longer-duration physiologic data than conventional ultrasound snapshots. The work was published by Nature Biotechnology (published online 26 May 2026), describing a device optimized to adhere softly during wear while supporting continuous observation. Researchers framed the technology as a shift toward more consistent fetal assessment across the pregnancy timeline. If validated in broader clinical settings, the patch could alter how clinicians structure prenatal monitoring for patients at elevated risk, where earlier detection and tighter follow-up can affect outcomes.