What is the most common site of occlusion in stroke?
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What is the most common site of occlusion in stroke?
The most common sites of occlusion of the internal carotid artery are the proximal 2 cm of the origin of the artery and, intracranially, the carotid siphon. Factors that modify the extent of infarction include the speed of occlusion and systemic blood pressure.
What happens when posterior cerebral artery is blocked?
Posterior cerebral artery syndrome is a condition whereby the blood supply from the posterior cerebral artery (PCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the occipital lobe, the inferomedial temporal lobe, a large portion of the thalamus, and the …
What causes basilar artery occlusion?
The risk factors for basilar artery thrombosis are the same as those seen generally in stroke. The most common risk factor is hypertension, which is found in as many as 70% of cases. It is followed by diabetes mellitus, coronary artery disease, peripheral vascular disease, cigarette smoking, and hyperlipidemia.
What happens if one vertebral artery is blocked?
If the resulting loss of brain function is permanent, it’ s called a stroke (an infarction or brain attack). A stroke can either be caused by blockage in the vertebral or basilar artery or the breaking off of a piece of plaque (embolus) that travels downstream and blocks a portion of the blood flow to the brain.
Can you live with blocked basilar artery?
The patient mortality rate is greater than 85%, although it drops to as low as 40% in patients with recanalization. One can expect good functional outcomes in as few as 24 to 35% of patients treated with intravenous or intra-arterial thrombolysis.
How is basilar artery occlusion treated?
IVT represents probably the best treatment that can be offered to victims of acute BAO in such hospitals. Approximately one fifth of ischemic strokes occur in the posterior circulation supplied by vertebrobasilar arteries, where basilar artery occlusion (BAO) tends to cause the most desolate strokes.
