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Characterization of the Pudendal Nerve with Transvaginal Ultrasonography
Sponsor: University of Virginia
Summary
This is a feasibility study characterizing the ability of transvaginal ultrasonography to identify the pudendal nerve. Today, the pudendal nerve block is typically accomplished through blind landmark techniques, thus limiting its success. To date, there has never been an attempt to determine if the visualization of the pudendal nerve would be possible using transvaginal ultrasound with existing technology; nor to perform this procedure transvaginally with the assistance of ultrasound.
Key Details
Gender
FEMALE
Age Range
18 Years - Any
Study Type
OBSERVATIONAL
Enrollment
24
Start Date
2021-05-13
Completion Date
2026-12
Last Updated
2025-01-29
Healthy Volunteers
Yes
Conditions
Interventions
All subjects-Observation
The sonographer or study team member will scan the lateral vaginal walls (Left and right) directing the probe slightly caudad in direction of the ischial spine (IS). The IS is very echogenic and easily identifiable (bony landmark). Anatomically, the pudendal nerve courses underneath the IS and travels with the vascular bundle of the pudendal artery and pudendal vein. The artery and the vein will be identified using color flow Doppler at the time of the scan. These landmarks, IS, pudendal artery and vein will serve as the basis for the identification of the pudendal nerve.
Locations (1)
University of Virginia
Charlottesville, Virginia, United States