Related Experiment Video
Updated: Jun 10, 2026
08:27
Adult Mouse Venous Hypertension Model: Common Carotid Artery to External Jugular Vein Anastomosis.
Published on: January 27, 2015
Experimental pseudo arteriovenous malformation. A model for training and research
1Department of Neuroradiology; University of Freiburg; Freiburg, Germany.
Summary
This study introduces a simple canine model for creating arteriovenous malformations (AVMs) that mimics human conditions. The model effectively demonstrates blood flow dynamics and is valuable for testing new medical devices and training.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Animal Models
Background:
- Experimental models for arteriovenous malformations (AVMs) are scarce.
- Developing an accessible and reproducible canine model is crucial for AVM research.
Purpose of the Study:
- To evaluate an easy-to-perform method for creating high-flow arteriovenous fistulae (AVFs) in a canine model.
- To assess the utility of this model for studying AVM pathophysiology and testing interventional tools.
Main Methods:
- Bilateral high-flow carotid to external jugular vein AVFs were surgically created in three adult dogs.
- One AVF was occluded with a coated stent after 21 days, while the contralateral remained patent.
- Serial angiograms of carotid and vertebral arteries were performed over nine months.
Main Results:
- The AVFs induced a significant steal effect, rapidly recruiting blood flow from the ipsilateral vertebral artery and contralaterally.
- Occlusion of one AVF revealed the full extent of the steal phenomenon.
- Cephalic pseudo-AVMs with angioma-like morphology were observed in all dogs.
Conclusions:
- The canine model is easy to establish and replicates morphological features of human AVMs.
- This model is suitable for testing new catheters and embolic materials, and for microcatheter navigation training.
- The model is not appropriate for investigating intracranial pathophysiology due to its limitations.
