Clinical Research Directory

Inclusion Criteria: * 18 years of age or older * intrauterine pregnancy of 20 weeks of gestation or greater, or postpartum during the same delivery admission following delivery at 20 weeks of gestation or greater * receiving obstetric care at a Stanford-affiliated facility * able to understand the study procedures and provide informed consent * considered clinically appropriate for participation by the treating obstetric team * intact maternal abdominal skin at the intended wearable ultrasound patch placement location * physically able to undergo placement of the wearable ultrasound patch on the maternal abdomen * have an available acoustic window that permits an attempt at uterine imaging or, during pregnancy, fetal imaging or physiological monitoring Exclusion Criteria: * age younger than 18 years * gestational age less than 20 weeks for pregnant participants, or delivery before 20 weeks for postpartum participants. * inability to provide informed consent. * maternal or fetal clinical instability for which the treating obstetric team determines that research participation would be inappropriate. * an obstetric emergency or other clinical condition requiring immediate evaluation, intervention, or uninterrupted clinical monitoring. * compromised maternal abdominal skin integrity at the proposed device placement site, including open wounds, active infection, significant rash, burns, or other conditions that would prevent safe placement of the device. * known allergy or significant sensitivity to materials used in the wearable device, adhesive, or coupling interface. * any condition in which placement or operation of the investigational device could interfere with standard obstetric monitoring, examination, treatment, or access to the maternal abdomen. * any other circumstance in which the treating clinician determines that participation would not be in the best interest of the participant or fetus.