Surgical Force-Correlating Science with Practice: A Study of the Fore Exerted by Urologists During Ureteral Access Sheath Placement “Presentation”

May 4, 2024

Amir Lavasani from UC Irvine presented a study on the force exerted by urologists during ureteral access sheath placement, revealing that a significant percentage apply forces above recommended limits, risking high-grade ureteral injury.

Biography:

Seyed Amiryaghoub M. Lavasani, Clinical Researcher, Department of Urology, University of California, Irvine, CA

 

Read the Full Video Transcript

Seyed Amiryaghoub M. Lavasani: Dear viewers, my name is Amir Lavasani, and I am a research specialist with the Department of Urology at the University of California Irvine. I am proud to present a study titled Surgical Force - Correlating Science with Practice: A Study of the Force Exerted by Urologists During Ureteral Access Sheath Placement.

Prior clinical studies have revealed that ureteral access sheath insertion forces ideally should be limited to 6 to 8 newtons. Accordingly, we examined the maximum force applied during access sheath placement by practicing urologists.

2022 AUA and WCET conference participants sequentially passed access sheaths into a draped model with a concealed force sensor, and the model precluded a 16 French access sheath, revealing each participant's maximum applied force. Recorded forces and a participant survey were reviewed.

Of 121 participants, 73% percent routinely used an access sheath. Figure two shows participant breakdown by surgical force. 29% exerted forces below 4 newtons, while 32% exerted forces greater than 8 newtons, thus risking a high-grade ureteral injury.
In sum, the recorded forces exerted by urologists are consistent with the injury rates in 13 to 26% of patients.
Thank you for your time.