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[Experimental aortic aneurysm with endovascular technique]

B Marty1, L K von Segesser, G Uhlschmid

  • 1Klinik für Herz- und Gefässchirurgie, Universitätsspital Zürich.

VASA. Zeitschrift Fur Gefasskrankheiten
|January 1, 1995
PubMed
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Researchers developed a straightforward method to create experimental aneurysms in animal aortas with minimal trauma. This technique facilitates the testing of endovascular systems efficiently.

Area of Science:

  • Vascular Surgery
  • Biomedical Engineering
  • Animal Models

Background:

  • Aneurysms pose significant health risks, necessitating reliable experimental models for research.
  • Current methods for creating experimental aneurysms can involve extensive surgical trauma.
  • Developing minimally invasive models is crucial for studying aneurysm development and treatment.

Purpose of the Study:

  • To establish a simple, low-trauma method for inducing experimental abdominal aortic aneurysms in animal models.
  • To evaluate the feasibility of using this method for testing endovascular devices.

Main Methods:

  • Experimental aneurysms were created in minipig abdominal aortas using balloon-dilatation to induce rupture.
  • Angiographic control and planimetric measurements were employed to monitor and quantify aortic dilatation.

Related Experiment Videos

  • Microscopic examination was performed to assess vascular tissue damage at the rupture site.

    • Main Results:

    • A reproducible experimental aneurysm model was successfully created with minimal operative trauma.
    • Aortic dilatation up to 3.5 times the initial diameter consistently led to rupture.
    • Microscopy revealed localized damage at the rupture site and focal lesions in the tunica intima.

    Conclusions:

    • This one-step procedure offers a simple and effective method for generating experimental aneurysms.
    • The model's low trauma and efficiency make it suitable for testing endovascular systems.
    • Further research can utilize this model to advance aneurysm treatment strategies.