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ORIGINAL RESEARCH article

Front. Med.
Sec. Nephrology
Volume 11 - 2024 | doi: 10.3389/fmed.2024.1501464

Efficacy and Intrarenal Pressure Analysis of Flexible and Navigable Suction Ureteral Access Sheaths with Flexible Ureteroscopy in Modified Surgical Positions for 2-6cm Upper Urinary Tract Stones: A Multicenter Retrospective Study

Provisionally accepted
Junjie Bai Junjie Bai 1Tong Shangguan Tong Shangguan 1,2*Gaoyu Zou Gaoyu Zou 1,2Liangguang Liu Liangguang Liu 3*Xiyun Xue Xiyun Xue 3*Jun Lin Jun Lin 1,2*Yushi Ye Yushi Ye 1,2*Xiuwu Ruan Xiuwu Ruan 4*Yongbin Li Yongbin Li 5*Shengzeng Yang Shengzeng Yang 5*Yangjian Chi Yangjian Chi 5*Yongqiang Nian Yongqiang Nian 6*Xingxiang Chen Xingxiang Chen 6*Rong Liu Rong Liu 7*Weizhong Cai Weizhong Cai 1*Shaoxing Zhu Shaoxing Zhu 1*Jianhui Chen Jianhui Chen 1*
  • 1 Fujian Medical University Union Hospital, Fuzhou, China
  • 2 Graduate School, Fujian Medical University, Fuzhou, Fujian Province, China
  • 3 Luoyuan County Hospital Hospital,, Fuzhou, China
  • 4 Fuzhou Taijiang District Hospital, Fuzhou, China
  • 5 Jian’ou Municipal Hospital, Nanping, China
  • 6 Fuqing Second Hospital, Fuzhou, China
  • 7 Pingtan Comprehensive Experimental Zone Hospital, Fuzhou, China

The final, formatted version of the article will be published soon.

    This multicenter retrospective study aimed to assess the efficacy, intrarenal pressure (IRP), and complications of retrograde intrarenal surgery (RIRS) using a flexible and navigable suction ureteral access sheaths (FANS-UAS) in the reverse Trendelenburg lithotomy position (RTLP) for treating kidney and upper ureteral stones measuring 2-6 cm. Conducted at six medical centers in Fujian Province from 2022 to 2024, the study included 231 patients with a median stone size of 26 mm. The immediate stone-free rate (ISFR) was 90.48%, while the SFR at postoperative day 30 was 95.67%. Only two patients developed postoperative fever, two patients had ureteral laceration and most experienced mild pain. Although surgical time increased with stone size, factors such as sex, infundibulopelvic angle (IPA), and stone density had little effect on duration, and there was no significant difference between ISFR and 30-day SFR. Importantly, all IRP measurements remained within normal limits. These findings suggest that RIRS with FANS-UAS in RTLP is a safe and effective approach for managing upper urinary tract stones of 2-6 cm.

    Keywords: Retrograde intrarenal surgery, Flexible and navigable suction ureteral access sheaths, Upper urinary tract stones, Intrarenal pressure, Reverse trendelenburg lithotomy position

    Received: 25 Sep 2024; Accepted: 31 Oct 2024.

    Copyright: © 2024 Bai, Shangguan, Zou, Liu, Xue, Lin, Ye, Ruan, Li, Yang, Chi, Nian, Chen, Liu, Cai, Zhu and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Tong Shangguan, Fujian Medical University Union Hospital, Fuzhou, China
    Liangguang Liu, Luoyuan County Hospital Hospital,, Fuzhou, China
    Xiyun Xue, Luoyuan County Hospital Hospital,, Fuzhou, China
    Jun Lin, Fujian Medical University Union Hospital, Fuzhou, China
    Yushi Ye, Fujian Medical University Union Hospital, Fuzhou, China
    Xiuwu Ruan, Fuzhou Taijiang District Hospital, Fuzhou, China
    Yongbin Li, Jian’ou Municipal Hospital, Nanping, China
    Shengzeng Yang, Jian’ou Municipal Hospital, Nanping, China
    Yangjian Chi, Jian’ou Municipal Hospital, Nanping, China
    Yongqiang Nian, Fuqing Second Hospital, Fuzhou, China
    Xingxiang Chen, Fuqing Second Hospital, Fuzhou, China
    Rong Liu, Pingtan Comprehensive Experimental Zone Hospital, Fuzhou, China
    Weizhong Cai, Fujian Medical University Union Hospital, Fuzhou, China
    Shaoxing Zhu, Fujian Medical University Union Hospital, Fuzhou, China
    Jianhui Chen, Fujian Medical University Union Hospital, Fuzhou, China

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