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Related Experiment Videos

Total Viabahn endoprosthesis collapse.

Mark E Ranson1, Mark A Adelman, Neal S Cayne

  • 1Division of Vascular Surgery at New York University School of Medicine, New York, NY, USA.

Journal of Vascular Surgery
|February 5, 2008
PubMed
Summary
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Viabahn graft collapse occurred during popliteal artery aneurysm repair due to oversizing. This complication led to infolding and necessitated a femoropopliteal bypass, highlighting the importance of precise graft selection.

Area of Science:

  • Vascular Surgery
  • Endovascular Interventions
  • Medical Device Complications

Background:

  • Popliteal artery aneurysms (PAAs) are a common manifestation of peripheral artery disease.
  • Endovascular repair using stent-grafts is an alternative to open surgery.
  • Viabahn endoprosthesis is utilized for complex vascular reconstructions.

Observation:

  • A case of Viabahn stent-graft collapse during endovascular treatment of a popliteal artery aneurysm is presented.
  • The patient, an elderly male with comorbidities, had an 11 mm proximal and 9 mm distal landing zone.
  • Post-deployment angiography revealed a distal filling defect and poor flow, unresponsive to balloon angioplasty.

Findings:

  • The Viabahn graft exhibited complete infolding upon transection, indicating a failure to fully expand.

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  • The graft oversizing ranged from 15% to 18% proximally and distally.
  • Focal areas of vessel narrowing likely contributed to incomplete graft unfolding and subsequent failure.

    • Implications:

    • Graft oversizing in endovascular repair of popliteal artery aneurysms can lead to stent-graft collapse.
    • Careful assessment of vessel diameter and potential focal narrowing is crucial for successful stent-graft deployment.
    • Alternative treatments like femoropopliteal bypass may be required in cases of endograft failure.