Study Reveals Natural Ureter Size and Factors Affecting Its Distensibility in Humans

What is it about?

Research on ureteric distensibility in stone removal procedures determined natural ureteric size and influencing factors. Results showed most patients accommodated dilators ≤14 F, with larger sizes linked to stenting and antibiotics. The study provides insights for procedural planning and minimizing complications.

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Why is it important?

This research is important because it provides valuable insights into the natural distensibility of the human ureter and factors that may influence it. Understanding ureteric distensibility is crucial for improving urological procedures such as ureteroscopy and percutaneous nephrolithotomy, which are commonly used to treat kidney stones. By determining the safe limits of ureteric dilation and identifying factors that may enhance distensibility, this study contributes to the development of safer and more effective surgical techniques, potentially reducing complications and improving patient outcomes in urological interventions. Key Takeaways: 1. Natural Distensibility: The study found that the majority of unstented adult human ureters can safely accommodate a 14-F dilator, with some able to accept larger sizes up to 16-F or even 18-F at a 6-N force threshold. 2. Favorable Factors: Preprocedural ureteric stenting and recent antibiotic use were identified as factors that significantly increased the likelihood of safely passing a 16-F dilator, potentially improving access for urological procedures. 3. Procedural Implications: The findings provide guidance for urologists in selecting appropriate ureteric access sheath sizes and highlight the potential benefits of preoperative stenting or antibiotic administration in certain cases to enhance ureteric distensibility.