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Is it safe to use a ureteral access sheath in an unstented ureter?
BMC Urology ( IF 1.7 ) Pub Date : 2019-08-29 , DOI: 10.1186/s12894-019-0509-x
Asaf Shvero 1 , Haim Herzberg 2 , Dorit Zilberman 1 , Yoram Mor 1 , Harry Winkler 1 , Nir Kleinmann 1
Affiliation  

BACKGROUND The aim of this study was to examine ureteral stricture rate after the use of UAS in an unstented ureter and compare complications of smaller vs. larger-caliber UAS. METHODS We conducted a retrospective analysis of consecutive RIRS for renal stones, with the use of UAS in unstented ureters. We excluded cases with previous ureteroscopies, who carried ureteral stent or nephrostomy, had impacted stones, underwent radiation treatment, or had urinary tract malignancies. The primary outcome was formation of ureteral strictures diagnosed by hydronephrosis in ultrasound test and late secretion in dynamic renal scan. Secondary outcome was stone-free-rate (SFR) and complications. In addition, we compared safety and efficacy of smaller (9.5/11.5Fr) vs. larger-caliber (12/14Fr) UAS. RESULTS The cohort included 165 patients with a median follow-up time of 115 days. There was no case of ureteral stricture formation after the use us UAS, despite using a larger-caliber UAS in nearly half the cases. Larger-caliber UAS was not associated with more complications compared to the smaller-caliber one (p = 0.780). SFR was non-significantly higher in the larger-caliber UAS group (p = 0.056), despite having a larger stone burden, and only stone number was associated with SFR (p = 0.003). CONCLUSIONS These data suggest that the use of UAS during RIRS in an unstented ureter is safe and does not involve ureteral stricture formation after one procedure. Furthermore, the use of wider sheaths was not found to be associated with higher complications rate.

中文翻译:

在没有支架的输尿管中使用输尿管进入护套是否安全?

背景技术这项研究的目的是检查在无支架输尿管中使用UAS后的输尿管狭窄率,并比较小口径和大口径UAS的并发症。方法我们对未置入输尿管的UAS进行了连续RIRS肾结石的回顾性分析。我们排除了以前接受输尿管镜检查,携带输尿管支架或肾造口术,结石撞击,接受放射治疗或发生尿路恶性肿瘤的病例。主要结果是在超声检查中由肾积水诊断出输尿管狭窄,在动态肾脏扫描中发现了晚期分泌物。次要结果为无结石率(SFR)和并发症。此外,我们比较了小口径(9.5 / 11.5Fr)和大口径(12 / 14Fr)UAS的安全性和有效性。结果该队列包括165名患者,中位随访时间为115天。使用美国无人机系统后,没有发生输尿管狭窄的案例,尽管在近一半的案例中使用了较大口径的无人机系统。与小口径的无人机系统相比,大口径的无人机系统没有更多的并发症(p = 0.780)。尽管有较大的结石负担,但在较大口径的UAS组中,SFR并不显着较高(p = 0.056),并且只有结石数目与SFR相关(p = 0.003)。结论这些数据表明,在无支架输尿管的RIRS期间使用UAS是安全的,并且不涉及一种手术后输尿管狭窄的形成。此外,未发现使用较宽的鞘管与较高的并发症发生率相关。尽管在近一半的案例中使用了大口径的UAS。与小口径的无人机系统相比,大口径的无人机系统没有更多的并发症(p = 0.780)。尽管有较大的结石负担,但在较大口径的UAS组中,SFR并不显着较高(p = 0.056),并且只有结石数目与SFR相关(p = 0.003)。结论这些数据表明,在无支架输尿管的RIRS期间使用UAS是安全的,并且不涉及一种手术后输尿管狭窄的形成。此外,未发现使用较宽的鞘管与较高的并发症发生率相关。尽管在近一半的案例中使用了大口径的UAS。与小口径的无人机系统相比,大口径的无人机系统没有更多的并发症(p = 0.780)。尽管有较大的结石负担,但在较大口径的UAS组中,SFR并不显着较高(p = 0.056),并且只有结石数目与SFR相关(p = 0.003)。结论这些数据表明,在无支架输尿管的RIRS期间使用UAS是安全的,并且不涉及一种手术后输尿管狭窄的形成。此外,未发现使用较宽的鞘管与较高的并发症发生率相关。056),尽管结石负担更大,并且只有结石数目与SFR相关(p = 0.003)。结论这些数据表明,在无支架输尿管的RIRS期间使用UAS是安全的,并且不涉及一种手术后输尿管狭窄的形成。此外,未发现使用较宽的鞘管与较高的并发症发生率相关。056),尽管结石负担更大,并且只有结石数目与SFR相关(p = 0.003)。结论这些数据表明,在无支架输尿管的RIRS期间使用UAS是安全的,并且不涉及一种手术后输尿管狭窄的形成。此外,未发现使用较宽的鞘管与较高的并发症发生率相关。
更新日期:2019-08-29
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