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Tundra lists 2 Uterine Artery Hemodynamics clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07653191
Changes in Uterine Artery Resistance Index Following Cervical Conization
The objective of this prospective study is to evaluate the hemodynamic impact of cervical conization on uterine artery blood flow by focusing on the Resistance Index (RI) as a direct indicator of distal vascular resistance. The central hypothesis is predicated on the physiological principle that the surgical excision and subsequent sealing of terminal cervical branches during conization increases the distal vascular impedance (afterload) encountered by the main uterine artery. Uterine artery Doppler RI measurements are performed preoperatively and at one month postoperatively to assess these alterations.
Gender: FEMALE
Ages: 30 Years - 50 Years
Updated: 2026-06-17
NCT07422181
PlaCEUS: Feasibility Study of Contrast-enhanced Ultrasound to Visualize Maternal Uterine Spiral Arteries Postpartum.
During pregnancy, unique blood vessels form within the uterine wall, known as spiral arteries. These vessels originate from the uterine artery, which is the main artery supplying blood to the uterus. Throughout pregnancy, spiral arteries undergo significant changes to increase blood and oxygen flow to the placenta, ensuring the developing baby receives adequate nutrients. When these arteries fail to remodel properly, complications such as pre-eclampsia or fetal growth restriction can occur. Until now, direct observation and evaluation of spiral arteries during pregnancy has not been feasible. Contrast-enhanced ultrasound may provide a breakthrough in this area. In this study, the investigators aim to use this imaging technique to visualize spiral arteries after the placenta has been delivered. If successful, this could allow to assess their structural quality. Additionally, the investigators will employ ultrasound to monitor physiological changes in the uterine artery during late pregnancy (after 37 weeks), during labour, and postpartum. By conducting these measurements, the investigators hope to develop methods for detecting spiral artery abnormalities earlier in pregnancy. Early identification could enable timely interventions and help prevent severe complications.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-02-19