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Updated: May 10, 2026
Porcine Model of Infrarenal Abdominal Aortic Aneurysm
Published on: November 21, 2019
Stable experimental model of carotid artery saccular aneurysm in swine using the internal jugular vein
Severino Lourenço da Silva1, Guilherme Benjamin Brandão Pitta, Adamastor Humberto Pereira
1Surgical Clinics, Federal University of Vale do São Francisco, Petrolina, Pernambuco State, Brazil. juniormedico@yahoo.com.br
Objective:
To develop an experimental model of stable saccular aneurysm in carotid of pigs using the internal jugular vein.
Methods:
In 12 healthy pigs, weighing between 25 and 5 0kg, five males and seven females, we made a right common carotid artery aneurysm. After elliptical arteriotomy, we carried out a terminolateral anastomosis with the distal stump of the internal jugular vein. Aneurysm volume was calculated so that the value did not exceed 27 times the area of the arteriotomy. After six days angiography and microscopic examination were performed to assess patency of the aneurysm and the presence of total or partial thrombosis.
Results:
There was a significant weight gain of pigs in the time interval between the manufacture of the aneurysm and angiography (p = 0.04). Aneurysmal patency was observed in ten pigs (83%). Operative wound infections occurred in two animals (16.6%), both with early onset, three days after the making of the aneurysm. Histological analysis showed aneurysm thrombus partially occluding the light in nine pigs (75%). In these animals, it was observed that on average 9% of the aneurysmal diameter was filled with thrombi.
Conclusion:
It was possible to develop a stable experimental model of saccular aneurysms in pig carotid artery by use of the internal jugular vein.
