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Related Experiment Videos

Proximal ureteral stent migration: an avoidable complication?

J W Slaton1, K A Kropp

  • 1Department of Urology, Medical College of Ohio, Toledo, USA.

The Journal of Urology
|January 1, 1996
PubMed
Summary
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Shorter ureteral stents with inadequate distal curl and upper calix proximal curl increase migration risk. These factors are crucial for preventing ureteral stent migration.

Area of Science:

  • Urology
  • Medical Devices
  • Nephrology

Background:

  • Ureteral stents are commonly used to maintain urine flow.
  • Stent migration is a known complication that can lead to adverse outcomes.
  • Understanding the factors contributing to migration is essential for improving patient care.

Purpose of the Study:

  • To identify and quantify the parameters associated with proximal ureteral stent migration.
  • To compare characteristics of migrated stents versus non-migrated stents.

Main Methods:

  • Retrospective analysis of 16 patients with ureteral stent migration.
  • Comparison group of 32 patients without stent migration.
  • Evaluation of stent length, proximal curl, and distal curl angles.

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Main Results:

  • Stent indwelling time and proximal curl (<180 degrees) were similar between groups.
  • Patients with migration more frequently had shorter stents.
  • Inadequate distal curl (<180 degrees) and proximal curl in the upper calix were associated with migration.

Conclusions:

  • Shorter than ideal stent length is a risk factor for migration.
  • Inadequate distal curl contributes to ureteral stent migration.
  • Proximal curl placement in the upper calix is linked to increased migration risk.