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Angiographic Revascularization after Bariatric Embolization in a Swine Model.

Olaguoke Akinwande1, Frank Yuan1, Godwin O Abiola1

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Journal of Vascular and Interventional Radiology : JVIR
|May 31, 2022
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Summary

Embolization of fundal arterioles using microspheres of varying sizes demonstrated consistent angiographic revascularization. The size of the embolic microspheres did not significantly impact the degree of arteriole recanalization in this swine model.

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Area of Science:

  • Interventional Radiology
  • Vascular Embolization
  • Swine Model Research

Background:

  • Arteriovenous malformations and other vascular pathologies often require embolization.
  • Understanding the efficacy of different embolic agents is crucial for treatment planning.

Purpose of the Study:

  • To evaluate fundal arteriole angiographic revascularization following embolization with microspheres of different diameters.
  • To determine if microsphere size influences the degree of revascularization.

Main Methods:

  • Embolization of fundal arterioles in a swine model using 50-μm, 100- to 300-μm, and 300- to 500-μm embolic microspheres.
  • Assessment of angiographic revascularization, including complete recanalization, partial recanalization, and collateralization.

Main Results:

  • Complete recanalization rates were 64% (50-μm), 70% (100-300 μm), and 70% (300-500 μm).
  • Partial recanalization and collateralization occurred in varying percentages across groups.
  • No statistically significant difference (P = .64) was observed in the degree of recanalization between the different microsphere size groups.

Conclusions:

  • All embolized fundal arterioles showed some degree of angiographic revascularization regardless of microsphere size.
  • Microsphere size does not appear to be a critical factor in achieving revascularization after fundal arteriole embolization in this model.