aortic arch syndrome

aortic arch syndrome

n.

Obstruction of the branches of the aortic arch caused by thrombosis.

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aortic arch syndrome,

any of a group of occlusive conditions of the arch of the aorta, producing a variety of symptoms related to obstruction of the large branch arteries, including the brachiocephalic, left common carotid, and left subclavian. It may be caused by atherosclerosis, Takayasu's arteritis, syphilis, and other conditions. Symptoms include syncope, temporary blindness, hemiplegia, aphasia, and memory loss.

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aortic [a-or´tik]

pertaining to the aorta.

aortic arch syndrome any of a group of disorders adding to occlusion of the arteries arising from the aortic arch; such occlusion may be caused by atherosclerosis, arterial embolism, or other conditions. See also pulseless disease.

aortic septal defect a congenital anomaly in which there is abnormal communication between the ascending aorta and the pulmonary artery just above the semilunar valves.

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aortic arch

the curvature of the aorta where it turns from its cranial path to a caudal one and becomes the thoracic aorta. See also aortic.

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aortic arch anomalies

include persistent right aortic arch, double aortic arch, and anomalous arch arteries, which cause compression of areas of the respiratory or digestive tracts.

aortic arch branching patterns

differ between species; e.g. cat, dog, rabbit are the same; horses and cattle are the same; pigs have one pattern, chickens another.

double aortic arch

persistence of both right and left embryonic aortic arches creating a vascular ring anomaly that causes esophageal entrapment.

persistent right aortic arch

persistence of the fourth right aortic arch causes constriction of the esophagus with regurgitation, aspiration pneumonia and dysphagia, and bloat in ruminants. The signs are present at birth.

aortic arch-pulmonary artery fistula

recorded rarely in horses; a fistula develops after simultaneous perforations occur in the pulmonary artery and the aorta resulting in the development of a fistula and the acute onset of heart failure which is usually fatal within a few days. Possibly results from an inherited defect in the vasa vasorum of the vessels.

aortic arch rupture

rare occurrence in horses resulting in acute cardiac tamponade or dissecting aneurysm into the myocardium and sudden death; is part of marfan's syndrome in calves; rarely a result of onchocerciasis in cattle.

aortic arch syndrome

any of a group of disorders leading to occlusion of the arteries arising from the aortic arch; such occlusion may be caused by atherosclerosis, arterial embolism, etc.

aortic arch transformation

the change in the original pattern of aortic arches of the fetus as a result of degeneration of some vessels and differential enlargement of others (see Table 9).

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aortic arch syndrome

1 Takayasu's arteritis, see there 2 Subclavian steal syndrome, see there