Polyurethane Internal Ureteral Stents in Treatment of Stone Patients: Morbidity Related to Indwelling Times

El-Faqih, Salah R.; Shamsuddin, A.B.; Chakrabarti, A.; Atassi, Ramiz; Kardar, Abdul Hafeez; Osman, Marjmin; Husain, I.

doi:10.1016/s0022-5347(17)38146-6

Cited by 312 publications

(223 citation statements)

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“…The degree of encrustation is dependant on the dwelling time. El faqih et al found that encrustation increased from 9.2% at < 6 weeks to 47.5% at six to 12 weeks to 76.3% at > 12 weeks of dwelling time (20). Other factors implicated in the increased incidence of encrustations are chronic recurrent stone formers, metabolic predisposition to stone disease, congenital renal anomalies, malignant urinary obstruction and pregnancy (21).…”

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confidence: 99%

“…As mentioned earlier, the degree of encrustation is dependant on the indwelling time, so, it is necessary to keep the indwelling time to as short as possible. Various authors have reported that indwelling time between 2-4 months is safe (9)(10)(11)(12)20). For patients requiring stents beyond this period, they should be kept on prophylactic antibiotics and have their stents frequently changed.…”

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Endourological Management of Forgotten Encrusted Ureteral Stents

2010

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Purpose: To present our experience and discuss the various endourological approaches for treating forgotten encrusted ureteral stents associated with stone formation. Materials and Methods: From July 2006 to December 2008, 14 patients (11 men and 3 women) with encrusted ureteral stents were analyzed. The average indwelling time of the stent was 4.9 years (range 1 to 12). Plain-film radiography was used to evaluate encrustation, stone burden, and fragmentation of the stents. Intravenous urogram and a Tc99m diethylene triamine penta acetic-acid renogram was used to assess renal function. Results: In seven patients, the entire stent was encrusted, in three patients the encrustation was confined to the ureteral and lower coil part of the stent, two patients had encrustation of the lower coil, and minimal encrustation was observed in two patients. Percutaneous nephrolithotomy was performed in 5 cases and retrograde ureteroscopy with intra-corporeal lithotripsy in 9 patients. Cystolithotripsy was used to manage the distal coil of the encrusted stent in eight patients. Simple cystoscopic removal of the stents with minimal encrustation was carried-out in two cases. Looposcopy and removal of the stent was performed in one patient with an ileal conduit and retained stent. Only one patient required open surgical removal of the stent. Thirteen out of 14 patients were rendered stone and stent free in one session. All except two stents were removed intact and stone analysis of encrustation and calcification revealed calcium oxalate and calcium phosphate in the majority of the cases. Conclusion: Endourological management of forgotten encrusted stents is highly successful and often avoids the need for open surgical techniques.

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Endourological Management of Forgotten Encrusted Ureteral Stents

2010

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“…El-Faqih et al reported encrustation rate of 9.2%, 47.5% and 76.3% for indwelling time of less than six weeks, 6-12 weeks and more than 12 weeks respectively, they emphasized need for maintaining computerized stent register [3]. Monga et al concluded that management of such complicated ureteral stents requires a multimodal therapeutic approach, a computerized tracking registry of ureteral stents may help prevent this urological travesty [4].…”

Section: Discussionmentioning

confidence: 99%

“…The use of ureteric stents is accepted standard practice in the management of ureteric obstruction [2]. 'Forgotten' indwelling stents can result in complications such as encrustation, pyelonephritis, recurrent obstruction, and stent migration and breakage [3,4] and hence can results in significant morbidity and financial loss to the patients. We herein report a case of encrustation and large stones formation at both the J end of a forgotten double-J stent.…”

Section: Introductionmentioning

confidence: 99%

A forgotten double-J stent with missing shaft and unusual large stone formation at its both the J end: A case report

Maurya¹,

Katiar²,

Kannaujiya³

2017

IJCRI

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International Journal of Case Reports and Images (IJCRI) is an international, peer reviewed, monthly, open access, online journal, publishing high-quality, articles in all areas of basic medical sciences and clinical specialties.Aim of IJCRI is to encourage the publication of new information by providing a platform for reporting of unique, unusual and rare cases which enhance understanding of disease process, its diagnosis, management and clinico-pathologic correlations.IJCRI publishes Review Articles, Case Series, Case Reports, Case in Images, Clinical Images and Letters to Editor. Website: www.ijcasereportsandimages.comA forgotten double-J stent with missing shaft and unusual large stone formation at its both the J end: A case report Rajesh Kumar Maurya, Vikash Katiar, Vijay Kannaujiya ABSTRACT Introduction: Use of ureteric stents is accepted standard practice in the management of ureteric obstruction, 'forgotten' indwelling stents can cause encrustation, pyelonephritis, recurrent obstruction, and stent migration and breakage. A stent register should be maintained to check follow-up of such patient to prevent this urological travesty. Case Report: We are reporting a case of encrustation and unusual large stones formation at both the J end of a forgotten double-J stent in a 35-year-old female presented in our outpatient department for complaints of left flank and lower abdominal pain, burning and increased frequency of micturition for four months. Conclusion:Indwelling stents can result in complications such as encrustation, pyelonephritis, recurrent obstruction, and stent migration and breakage so their use should be done with caution.

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“…Stent migration, fragmentation and encrustation are the common late complications associated with them [1]. Ureteric stent encrustation is often associated with a stent indwelling time of more than 12 weeks [2], alkaline urine, urinary tract infections, poor compliance and congenital renal anomalies [3]. The underlying mechanism of encrustation is that the urinary proteins and bacterial products adhere to the stent surface leading to a biofilm formation that in turn, leads to calcium and oxalate precipitation.…”

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confidence: 99%