The indications for carotid endarterectomy are sometimes imprecise. Total occlusion of the internal carotid artery has often implied irreversibility. Carotid thromboendarterectomy was performed on eight patients who on angiography had a complete occlusion of proximal internal carotid artery but showed antegrade opacification of the infraophthalmic carotid siphon. Direct magnification, delayed r...

Doppler ultrasound is a noninvasive technique that allows the examination of the direction, velocity, and volume of blood flow. Doppler ultrasound has proven to be a valuable technique for investigation of artery conditions. Therefore, Doppler ultrasonography is known as reliable technique, which demonstrates the flow characteristics and resistance of internal carotid arteries in stenosis and o...

The pathogenesis of embolic events ipsilateral to an occluded carotid artery is uncertain. To examine this question we combined occlusion of the left common carotid artery with embolism from the right common carotid artery in rats. Following ligation of the left carotid artery in 20 experimental rats, we irradiated the right carotid artery with a laser (632 nm, 200 mW/cm2, 12-15 minutes) follow...

This study aimed to compare the clinical value of carotid ultrasound and digital subtraction angiography (DSA) for artery stenosis in patients with cerebral infarction. Sixty infarction underwent DSA. Carotid stenosis, degree (mild, moderate, severe, occlusion), plaques were recorded compared. rate was 96.67 % (58/60) 91.67 (55/60) on DSA ultrasound, respectively, difference not statistically s...

One-third of patients who develop internal carotid occlusion will die or have disabling cerebral symptoms. ~ The results of urgent carotid thromboendarterectomy in patients with established internal carotid occlusion were disappointing. Extracranial to intracranial bypass in symptomatic patients with internal carotid artery occlusion produced high numbers of strokes and was not of benefit. 2 At...

We studied 4 patients with bilateral carotid artery occlusion who suffered delayed TIAs in one of the occluded internal carotid or common carotid areas. Hemodynamic mechanisms were prominent in two patients, in head turning and orthostatic hypotension. In the other two cases, embolic phenomena through the homolateral external carotid collateral pathways were probable, because this artery (or th...

Limb-shaking is a specific clinical feature of transient ischaemic attacks that has been associated with a high-grade stenosis or occlusion of the internal carotid artery. The aim of this study was to describe the clinical characteristics of limb-shaking in patients with internal carotid artery occlusion and to investigate whether patients with limb-shaking have a worse haemodynamic state of th...

In patients with high-grade atherosclerotic stenosis or occlusion of the extracranial cerebral arteries, subarachnoid hemorrhage (SAH) may occur, potentially due to rupture of fragile dilated pial collateral vessels. This association has been well described in Moyamoya disease. There are only few cases in the literature that reported SAH due to bilateral carotid artery stenosis but intraventric...

Many authors have drawn attention to occlusive disease of the carotid arteries as a cause of cerebral ischemia. Although total carotid artery occlusion may be caused by different disease entities, by far the most frequent cause remains atherosclerosis. However, because of uncertainty about the pathophysiology of symptomatic internal carotid artery (ICA) occlusion, there has been controversy sur...

PURPOSE To document a case of central retinal artery occlusion after chiropractic treatment. METHODS An 87-year-old man suffered a central retinal artery occlusion immediately after chiropractic neck manipulation. RESULTS A magnetic resonance angiogram showed an atherosclerotic plaque in the ipsilateral carotid artery, which probably shed emboli during cervical joint mobilization. CONCLUS...