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Monitoring the Wall Mechanics During Stent Deployment in a Vessel
08:28

Monitoring the Wall Mechanics During Stent Deployment in a Vessel

Published on: May 8, 2012

Failure of Wallstents in the subclavian vein due to stent damage

D Maintz1, P Landwehr, M Gawenda

  • 1Department of Diagnostic Radiology, School of Medicine, University of Cologne, Cologne, Germany. maintz@uni-muenster.de

Clinical Imaging
|August 3, 2001
PubMed

Insights

Wallstents can fail in treating subclavian vein obstruction, leading to rethrombosis. This study highlights stent fragmentation and collapse as common failure modes in hemodialysis patients.

Area of Science:

  • Vascular Surgery
  • Interventional Radiology
  • Nephrology

Background:

  • Subclavian vein stenosis and thrombosis are prevalent complications in hemodialysis patients and Paget-von Schrötter syndrome.
  • Less-invasive treatments like angioplasty, thrombolysis, and stenting are employed for venous obstruction.

Observation:

  • This report details three cases of recurrent subclavian vein obstruction treated with Wallstent placement.
  • All patients experienced rethrombosis following stent implantation.

Findings:

  • Stent failure was the cause of rethrombosis in all three cases.
  • Specific failure modes included stent fragmentation (two cases) and stent collapse (one case).

Implications:

  • The findings suggest potential limitations of Wallstents in managing subclavian venous obstructions.
  • Further research into stent durability and alternative treatments for these complex cases is warranted.

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