Knotted stents: Case report and outcome analysis

Kim, Min Su; Lee, Ha Na; Hwang, Hokyeong

doi:10.4111/kju.2015.56.5.405

Cited by 10 publications

(8 citation statements)

References 6 publications

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“…Urolithiasis is the main indication for ureteral stents. In other cases, retroperitoneal fibrosis, malignant ureteric obstruction, and ileal conduit have been reported as indications for stenting 6 . In almost all reports, double‐J stent was inserted, and to the best of our knowledge, this is the first case report of the impaction of a knotted single‐J stent in patient with an ureterocutaneostomy 3…”

Section: Discussionmentioning

confidence: 91%

Knotted ureteral single‐J stent in a patient with ureterocutaneostomy

et al. 2021

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Introduction Although ureteral stent catheterization is a common procedure in urological practice, knotting of a ureteral catheter is a very rare complication. Case presentation A 62‐year‐old man underwent cystectomy and ureterocutaneostomy for bladder cancer. The ureteral single‐J stent was changed every month postoperatively without complications. However, at postoperative 30 months, resistance was experienced while adjusting the stent position after the exchange. Abdominal radiography revealed knotting of the stent at the right renal pelvis. The knotted stent was percutaneously removed because the patient had only one functioning kidney. A nephrostomy tract was established and the ureteral stent was exchanged. No complications occurred in the perioperative period. Conclusion We encountered a case of a knotted ureteral single‐J stent in a man treated with ureterocutaneostomy. In this case, resistance was noticed during extraction; the possibility of stent knotting should always be considered, and an appropriate removal strategy must be planned.

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Section: Discussionmentioning

confidence: 91%

Knotted ureteral single‐J stent in a patient with ureterocutaneostomy

et al. 2021

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“… 3 , 19–26 It is speculated that knot formation may occur due to the excessive length of the coils. 25 , 26 A variety of techniques have been described to remove the knotted stent. Among them, gentle traction and unknotting of the stent by passing a super-stiff guidewire may represent a minimally invasive technique.…”

Section: Discussionmentioning

confidence: 99%

A Novel Telescopic Access Sheath Method to Manage Encrusted or Knotted Retained Ureteral Stents

Agarwal

2022

Journal of Endourology

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Purpose: Encrusted and knotted stents may cause serious urologic complications. This study aimed to develop a novel and minimally invasive technique to manage encrusted or knotted retained ureteral stents. Materials and Methods: This technique was used in nine patients with retained stents. Through rigid cystoscopy, the stents were pulled out of the urinary meatus. The access sheath was modified by cutting the distal end of its obturator. The modified access sheath was advanced over the retained stents in a telescopic manner to remove the encrusted and/or knotted stents. Results: Six patients had encrustations, two had knot formation, and one had both encrustation and knot formation. The encrustations were peeled off in the process. The knots were either undone or pulled through the lumen of the access sheath. The retained stents were removed intact from all patients without any complications. Conclusion: The access sheath method described in this article provides a simple alternative for the removal of encrusted or knotted retained stents. However, this technique requires further validation to establish its safety and efficacy.

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“…21 out of 32 cases of knotted ureteral stents revealed the use of multi-length double J ureteric stent. Theoretically, the longer the length of ureteral stent in the kidney, more likely the possibility for it to knot on its end [6,10]. It was hypothesized that the excessive length causes one end of the stent abutting the wall to subsequently pass through an open loop [8].…”

Section: Predisposing Factor To Knotted Stentmentioning

confidence: 99%

“…The most common risk factor was the use of multi length stent that was attributed by co-factors such as absence of hydronephrosis or presence of encrustations. Kim et al [6] had hypothesized that the absence of hydronephrosis increases the chance of ureteral stent knot formation.…”

Section: Predisposing Factor To Knotted Stentmentioning

confidence: 99%

“…Management options for removal of knotted stent includes removal with simple gentle traction with or without adjuncts such as Valsalva maneuver or lubrication, stiff guidewire manipulation for unknotting, ureteroscopy with holmium laser, percutaneous nephrostomy removal or open ureterotomy [6]. An updated literature review was also performed.…”

Section: Introductionmentioning

confidence: 99%

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