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Carotid artery dissection is a serious condition in which a tear forms in one of the two main carotid arteries in the neck, allowing blood to enter the artery wall and separate its layers (*dissection*). This separation can lead to the formation of a blood clot, narrowing of the artery, and restricted blood flow to the brain, potentially ...
Arterial dissections become life-threatening when growth of the false lumen prevents perfusion of the true lumen and the related end organs. For example, in an aortic dissection, if the left subclavian artery orifice were distal to the origin of the dissection, then the left subclavian would be said to be perfused by the false lumen, while the left common carotid (and its end organ, the left ...
441.9 Abdominal Aortic Aneurysm, unspecified; 442 Other aneurysm; 443 Other peripheral vascular disease. 443.0 Raynaud's syndrome; 443.1 Thromboangiitis obliterans [Buerger's disease] 443.2 Other arterial dissection 443.21 Dissection of carotid artery; 443.22 Dissection of iliac artery; 443.23 Dissection of renal artery; 443.24 Dissection of ...
Causes can include aortic dissection (which is the most common type), [8] intramural hematoma, penetrating atherosclerotic ulcer or a thoracic aneurysm that has become unstable. [9] The potential causes of AAS are life-threatening and present with similar symptoms, making it difficult to distinguish the ultimate cause, though high resolution ...
Saccular aneurysms are almost always the result of hereditary weaknesses in blood vessels and typically occur within the arteries of the circle of Willis, [20] [26] in order of frequency affecting the following arteries: [27] Anterior communicating artery; Posterior communicating artery; Middle cerebral artery; Internal carotid artery; Tip of ...
The smaller the aneurysm the better the prognosis. There is less risk for ischemic myocardial damage and mortality with smaller aneurysms. Aneurysms with an internal diameter > 8 mm have poorer outcomes, since these aneurysms can be occluded and be associated with complications such as arrhythmias, myocardial infarction, or sudden death. [2]
Internal carotid artery - dissection. At its origin, the internal carotid artery is somewhat dilated. This part of the artery is known as the carotid sinus or the carotid bulb. The ascending portion of the cervical segment occurs distal to the bulb when the vessel walls are again parallel.
At the throat it forks into the internal carotid artery and the external carotid artery. The internal carotid artery supplies the brain, and the external carotid artery supplies the face. This fork is a common site for atherosclerosis, an inflammatory build-up of atheromatous plaque inside the common carotid artery, or the internal carotid ...
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