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The full metallic double-pigtail ureteral stent: Review of the clinical outcome and current status.

Kallidonis PS, Georgiopoulos IS, Kyriazis ID, Kontogiannis S, Al-Aown AM, Liatsikos EN - Indian J Urol (2015 Jan-Mar)

Bottom Line: Clinical experience with the MS showed controversial results.Experience in pediatric patients is limited and warrants additional study.The cost-effectiveness of the MS seems to be appropriate for long-term treatment.

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, University of Patras, Rion, Patras, Greece.

ABSTRACT
The full metallic double-J ureteral stent (MS) was introduced as a method for providing long-term drainage in malignant ureteral obstruction. Experimental evaluation of the MS revealed that its mechanical features allow efficient drainage in difficult cases, which could not be managed by the insertion of a standard polymeric double-J stent. Clinical experience with the MS showed controversial results. Careful patient selection results in efficient long-term management of malignant ureteral obstruction. The use of the MS should also be considered in selected benign cases. Major complications are uncommon and the minor complications should not hinder its use. Experience in pediatric patients is limited and warrants additional study. The cost-effectiveness of the MS seems to be appropriate for long-term treatment. Further investigation with comparative clinical trials would document the outcome more extensively and establish the indications as well as the selection criteria for the MS.

No MeSH data available.


Related in: MedlinePlus

A metal double-pigtail ureteral stent which has macroscopically clean appearance has been covered by a thin layer of encrustation when its surface is observed by electron microscopy. In fact, energy dispersive analysis by X-ray revealed that the deposits have high concentrations of calcium
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Figure 1: A metal double-pigtail ureteral stent which has macroscopically clean appearance has been covered by a thin layer of encrustation when its surface is observed by electron microscopy. In fact, energy dispersive analysis by X-ray revealed that the deposits have high concentrations of calcium

Mentions: Electron microscopy and elemental analysis (energy dispersive analysis by X-ray) were employed to evaluate the composition of the depositions on long-term indwelling MSs. The investigators observed the presence of biofilm lining and the limited presence of inorganic material on the removed MSs.[18] These results are similar to the results obtained using the same methods on MSs removed after long-term placement in a large clinical series by Liatsikos et al. In the latter study, the evaluated stents were selected for their characteristic macroscopic appearance. Thus, some of them were associated with high concentrations of inorganic material (stone formation) while others remained without visible deposits. Nevertheless, encrustation was observed by electron microscopy despite the macroscopically clean appearance of the examined MS [Figures 1a, b and 2a, b]. These encrustations did not result in occlusion of the majority of the MSs.[19]


The full metallic double-pigtail ureteral stent: Review of the clinical outcome and current status.

Kallidonis PS, Georgiopoulos IS, Kyriazis ID, Kontogiannis S, Al-Aown AM, Liatsikos EN - Indian J Urol (2015 Jan-Mar)

A metal double-pigtail ureteral stent which has macroscopically clean appearance has been covered by a thin layer of encrustation when its surface is observed by electron microscopy. In fact, energy dispersive analysis by X-ray revealed that the deposits have high concentrations of calcium
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4300582&req=5

Figure 1: A metal double-pigtail ureteral stent which has macroscopically clean appearance has been covered by a thin layer of encrustation when its surface is observed by electron microscopy. In fact, energy dispersive analysis by X-ray revealed that the deposits have high concentrations of calcium
Mentions: Electron microscopy and elemental analysis (energy dispersive analysis by X-ray) were employed to evaluate the composition of the depositions on long-term indwelling MSs. The investigators observed the presence of biofilm lining and the limited presence of inorganic material on the removed MSs.[18] These results are similar to the results obtained using the same methods on MSs removed after long-term placement in a large clinical series by Liatsikos et al. In the latter study, the evaluated stents were selected for their characteristic macroscopic appearance. Thus, some of them were associated with high concentrations of inorganic material (stone formation) while others remained without visible deposits. Nevertheless, encrustation was observed by electron microscopy despite the macroscopically clean appearance of the examined MS [Figures 1a, b and 2a, b]. These encrustations did not result in occlusion of the majority of the MSs.[19]

Bottom Line: Clinical experience with the MS showed controversial results.Experience in pediatric patients is limited and warrants additional study.The cost-effectiveness of the MS seems to be appropriate for long-term treatment.

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, University of Patras, Rion, Patras, Greece.

ABSTRACT
The full metallic double-J ureteral stent (MS) was introduced as a method for providing long-term drainage in malignant ureteral obstruction. Experimental evaluation of the MS revealed that its mechanical features allow efficient drainage in difficult cases, which could not be managed by the insertion of a standard polymeric double-J stent. Clinical experience with the MS showed controversial results. Careful patient selection results in efficient long-term management of malignant ureteral obstruction. The use of the MS should also be considered in selected benign cases. Major complications are uncommon and the minor complications should not hinder its use. Experience in pediatric patients is limited and warrants additional study. The cost-effectiveness of the MS seems to be appropriate for long-term treatment. Further investigation with comparative clinical trials would document the outcome more extensively and establish the indications as well as the selection criteria for the MS.

No MeSH data available.


Related in: MedlinePlus