{"title":"Use of Black-Star® magnetic-end double-J stent in transperitoneal and retroperitoneal pediatric robotic assisted laparoscopic pyeloplasty.","authors":"Fabrizio Vatta, Hortense Alliot, Sébastien Faraj, Caroline Camby, Marc-David Leclair, Thomas Loubersac","doi":"10.1016/j.jpurol.2025.02.040","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>The Black-Star® magnetic-end double-J ureteral stent (MEDJUS) is commonly used in pediatric urology, but few studies have analyzed its use in pediatric robotic-assisted laparoscopic pyeloplasty (RALP), particularly with a retroperitoneal approach. The aim was to review our series and analyze possible factors associated with failure of stent insertion or retrieval.</p><p><strong>Study design: </strong>Retrospective review from a prospective database of children who underwent trans-peritoneal RALP (T-RALP) and retroperitoneal (R-RALP) pyeloplasty between 2020 and 2023. Success was defined as the successful insertion MEDJUS during RALP and its removal under local anesthesia.</p><p><strong>Results: </strong>Of the 33 patients who underwent RALP (14 T-RALP, 19 R-RALP), MEDJUS was successfully placed in 23 (74 %) (9 transperitoneal, 14 retroperitoneal), while eight patients had difficulty inserting the stent. In two patients, use of Black-Star® was not attempted (one patient was too tall, surgeon preference in the other). Of the 23 patients in whom MEDJUS was inserted, retrieval failed in five. Overall, successful insertion and retrieval occurred in 58 % of cases. Statistical analysis revealed an association between age and weight, and success of insertion (p values of 0.05 and 0.04, respectively). Moreover, all failures of retrieval occurred in patients who underwent a retroperitoneal approach (p-value 0.04).</p><p><strong>Conclusion: </strong>The use of MEDJUS showed good results for RALP. Overall success rate in terms of avoiding a second general anesthesia for stent retrieval was 60 %. Our experience indicates an association between successful stent insertion and increasing age and weight. Additionally, we observed a higher rate of retrieval failure in patients who underwent a retroperitoneal approach.</p><p><strong>Clinical trial registration: </strong>It is a retrospective study registered at our local ethical committee at Nantes Université \"Groupe Nantais d'Ethique dans le Domaine de la Santé\" (GNEDS) (23-85-06-300).</p>","PeriodicalId":16747,"journal":{"name":"Journal of Pediatric Urology","volume":" ","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Pediatric Urology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.jpurol.2025.02.040","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PEDIATRICS","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: The Black-Star® magnetic-end double-J ureteral stent (MEDJUS) is commonly used in pediatric urology, but few studies have analyzed its use in pediatric robotic-assisted laparoscopic pyeloplasty (RALP), particularly with a retroperitoneal approach. The aim was to review our series and analyze possible factors associated with failure of stent insertion or retrieval.
Study design: Retrospective review from a prospective database of children who underwent trans-peritoneal RALP (T-RALP) and retroperitoneal (R-RALP) pyeloplasty between 2020 and 2023. Success was defined as the successful insertion MEDJUS during RALP and its removal under local anesthesia.
Results: Of the 33 patients who underwent RALP (14 T-RALP, 19 R-RALP), MEDJUS was successfully placed in 23 (74 %) (9 transperitoneal, 14 retroperitoneal), while eight patients had difficulty inserting the stent. In two patients, use of Black-Star® was not attempted (one patient was too tall, surgeon preference in the other). Of the 23 patients in whom MEDJUS was inserted, retrieval failed in five. Overall, successful insertion and retrieval occurred in 58 % of cases. Statistical analysis revealed an association between age and weight, and success of insertion (p values of 0.05 and 0.04, respectively). Moreover, all failures of retrieval occurred in patients who underwent a retroperitoneal approach (p-value 0.04).
Conclusion: The use of MEDJUS showed good results for RALP. Overall success rate in terms of avoiding a second general anesthesia for stent retrieval was 60 %. Our experience indicates an association between successful stent insertion and increasing age and weight. Additionally, we observed a higher rate of retrieval failure in patients who underwent a retroperitoneal approach.
Clinical trial registration: It is a retrospective study registered at our local ethical committee at Nantes Université "Groupe Nantais d'Ethique dans le Domaine de la Santé" (GNEDS) (23-85-06-300).
目的:Black-Star®磁端双j输尿管支架(MEDJUS)常用于儿科泌尿外科,但很少有研究分析其在儿童机器人辅助腹腔镜肾盂成形术(RALP)中的应用,特别是在腹膜后入路的应用。目的是回顾我们的系列研究并分析与支架置入或取出失败相关的可能因素。研究设计:对2020年至2023年间接受经腹膜RALP (T-RALP)和后腹膜RALP (R-RALP)肾盂成形术的儿童的前瞻性数据库进行回顾性分析。成功定义为在RALP期间成功插入MEDJUS并在局部麻醉下将其取出。结果:33例RALP患者(14例T-RALP, 19例R-RALP)中,23例(74%)患者(9例经腹膜,14例经腹膜后)成功放置MEDJUS, 8例患者置入支架困难。在两名患者中,没有尝试使用Black-Star®(一名患者太高,另一名患者是外科医生的首选)。在植入MEDJUS的23例患者中,有5例取出失败。总的来说,58%的病例成功插入和取出。统计分析显示年龄和体重与插入成功率相关(p值分别为0.05和0.04)。此外,所有手术失败都发生在经腹膜后入路的患者中(p值为0.04)。结论:使用MEDJUS治疗RALP效果良好。总体成功率在避免第二次全身麻醉的支架取出是60%。我们的经验表明,成功的支架置入与年龄和体重增加有关。此外,我们观察到在接受腹膜后入路的患者中有更高的取出失败率。临床试验注册:在南特大学当地伦理委员会“Groupe Nantais d'Ethique dans le Domaine de la sant”(GNEDS)(23-85-06-300)注册的回顾性研究。
期刊介绍:
The Journal of Pediatric Urology publishes submitted research and clinical articles relating to Pediatric Urology which have been accepted after adequate peer review.
It publishes regular articles that have been submitted after invitation, that cover the curriculum of Pediatric Urology, and enable trainee surgeons to attain theoretical competence of the sub-specialty.
It publishes regular reviews of pediatric urological articles appearing in other journals.
It publishes invited review articles by recognised experts on modern or controversial aspects of the sub-specialty.
It enables any affiliated society to advertise society events or information in the journal without charge and will publish abstracts of papers to be read at society meetings.