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Clinical application and technical details of cook zenith devices modification to treat urgent and elective complex aortic aneurysms. | LitMetric

AI Article Synopsis

  • - The study outlines the technical process of modifying four Cook Zenith devices for the treatment of complex aortic aneurysms, including stent graft deployment and creating fenestrations with specific materials.
  • - Four patients had successful exclusion of their aneurysms, with 15 fenestrations effectively bridged, and guidance on various procedure metrics like time, blood loss, and hospital stay provided.
  • - The findings suggest that physician-modified endografts are a safe and effective alternative to custom devices, particularly in urgent situations, and should be included in complex aortic treatment protocols.

Article Abstract

Purpose: To describe technical details of modifying four different Cook Zenith devices to treat complex aortic aneurysms.

Material: In the first three cases, the modification process involved complete stent graft deployment on a sterile back table. Fenestrations were created using an ophthalmologic cautery and reinforced with a radiopaque snare using a double-armed 4-0 Ethibond locking suture based on measurements obtained on centerline of flow. In each instance, a nitinol wire was withdrawn and redirected through and through the fabric and used as a constraining wire. In the fourth patient, modification involved partial stent graft deployment and creation of additional two fenestrations to accommodate renal arteries. The devices are resheathed and implanted in the standard fashion.

Results: Four patients underwent exclusion of their aneurysms, including thoracoabdominal aneurysms (n = 2), a contained ruptured juxtarenal aneurysm (n = 1), and a ruptured failed previous endovascular repair (n = 1). Fifteen fenestrations were successfully bridged with Atrium iCAST stent grafts. Average graft modification time, operative time, contrast volume, radiation dose, estimated blood loss, and hospital length of stay were 89 min, 155.25 min, 58.8 mL, 2451 mGy, 175 mL, and 4.3 days, respectively. One patient required a secondary intervention to treat a type Ib endoleak. During an average follow-up of 25 months, aneurysm sacs progressively shrank without additional intervention.

Conclusion: Physician-modified fenestrated/branched endografts are a safe alternative to custom made devices, especially in urgent cases and should be part of the armamentarium of any complex aortic program.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8167926PMC
http://dx.doi.org/10.1186/s42155-021-00233-7DOI Listing

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