What is the artery of Percheron?
What is the artery of Percheron?
Artery of Percheron (AOP) is an abnormal variant of the arterial supply of the thalamus. AOP occlusion can lead to bilateral thalamic and rostral midbrain infarct presenting as memory loss, fluctuating levels of consciousness, and altered mental status.
How common is artery of Percheron?
This is usually due to hypoplastic or absent other P1 and this common trunk is termed Artery of Percheron (AOP). Its prevalence is in the range of 7–11% among the general population and AOP infarcts account in an average of 0.4–0.5% of ischemic strokes.
Does everyone have an artery of Percheron?
The artery of Percheron is estimated to occur in up to 33% of the population 2. Ischemic strokes affecting this artery are thought to be at the origin of 4-18% of all thalamic strokes 3.
What causes bilateral thalamic stroke?
It happens as a result of an anatomical variant of the diencephalic irrigation, in which the thalamic paramedian arteries arise from a common trunk from the posterior cerebral artery (PCA), which generates a clinical syndrome characterized by bilateral vertical gaze palsy, memory impairment and hypersomnia.
What is basilar artery syndrome?
Top of the basilar syndrome, also known as rostral brainstem infarction, occurs when there is thromboembolic occlusion of the top of the basilar artery. This results in bilateral thalamic ischemia due to occlusion of perforator vessels.
What is thalamic stroke?
A thalamic stroke is a type of lacunar stroke, which refers to a stroke in a deep part of your brain. Thalamic strokes occur in your thalamus, a small but important part of your brain.
Where is the artery of Percheron?
The artery of Percheron (AOP) is a rare anatomical variation in the brain vascularization in which a single arterial trunk arises from the posterior cerebral artery (PCA) to supply both sides of the thalamus and midbrain.
How common is basilar artery stroke?
Although the exact incidence of basilar artery occlusion remains unknown, it is estimated to account for 1% of all ischemic strokes.  Data from the center, including 129 patients with an LVO, showed that the estimated incidence was four persons per 100000/year.
Where does the artery of Percheron come from?
The Artery of Percheron is a vascular variant in which a single dominant thalamo-perforating artery arises from one P1/2 segment of PCA and bifurcates to supply both paramedian thalami. Occlusion of this vessel results in a characteristic pattern of bilateral paramedian thalamic infarcts with or without mesencephalic infarctions.
What are the symptoms of artery of Percheron infarction?
Go to: Abstract Artery of Percheron (AOP) occlusion is a rare cause of ischemic stroke characterized by bilateral paramedian thalamic infarcts, with or without mesencephalic infarction. Clinically it presents with mental state disturbances, hypersomnolence, aphasia/dysarthria, amnesia and ocular movement disorders, including vertical gaze palsy.
How often does acute artery of Percheron stroke occur?
Acute Artery of Percheron infarcts represent 0.1 to 2% of total ischaemic stroke A typical stroke centre with 1000 strokes per annum may see 1-2 cases per annum The arterial supply of thalamus and midbrain is complex and is provided by perforating branches from the posterior cerebral artery and the posterior communicating artery.
What kind of stroke is caused by AOP occlusion?
Artery of Percheron (AOP) occlusion is a rare cause of ischemic stroke characterized by bilateral paramedian thalamic infarcts, with or without mesencephalic infarction.
What is the artery of Percheron? Artery of Percheron (AOP) is an abnormal variant of the arterial supply of the thalamus. AOP occlusion can lead to bilateral thalamic and rostral midbrain infarct presenting as memory loss, fluctuating levels of consciousness, and altered mental status. How common is artery of Percheron? This is usually due to…