The CGuard(TM) EPS is designed to prevent peri-procedural and late embolization by trapping potential emboli against the arterial wall while maintaining excellent perfusion to the external carotid
artery and branch vessels.
Delayed vision loss after external carotid
ligation for maxillofacial AVMs has been attributed to steal syndrome, associated with recollateralization of the external carotid
from the ophthalmic artery (4).
Had either mass been an aneurysm of the parotid segment of the external carotid
artery, it would have been palpable and likely pulsatile.
It can be located laterally, deep to, or between the internal and external carotid
arteries before they terminate in the supratonsillar fossa.
The artery is divided into internal and external carotid
arteries at the upper rim of the thyroid cartilage.
Pial synangiosis (placing a branch of the external carotid
artery in apposition to the pia-arachnoid) is an example of an indirect bypassing procedure that can be used.
The reference diameter of the external carotid
artery should be between 3 - 6 mm and the reference diameter of the common carotid artery should be between 5 - 13 mm.
Six-Month Ultrasound Analysis Confirms Widely Patent Internal and External Carotid
Arteries When Compared to Conventional Carotid Stents
The MRA images revealed bilateral persistent type 2 proatlantal arteries (Figure 1b, short white arrows) originating from the bilateral external carotid
arteries (Figure 1a, long white arrows) and eventually contributing to and forming the vertebrobasilar circulation (Figure 1a, 1b, yellow arrows).
Further imaging identified the mass as an intraparotid external carotid
Stenosis is most significant at the carotid bifurcation, also known as the carotid bulb, where the common carotid artery branches into the internal and external carotid
Due to the slow progression of the disease and in response to progressive cerebral ischemia, a large network of collateral vessels is formed from the external carotid
arteries, the vertebra-basilar system and other vessels (2).