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In children, the most common cause is a stroke of the ventral pons. [9]Unlike persistent vegetative state, in which the upper portions of the brain are damaged and the lower portions are spared, locked-in syndrome is essentially the opposite, caused by damage to specific portions of the lower brain and brainstem, with no damage to the upper brain.
Vertebrobasilar insufficiency (VBI) describes a temporary set of symptoms due to decreased blood flow in the posterior circulation of the brain.The posterior circulation supplies the medulla, pons, midbrain, cerebellum and (in 70-80% of people) supplies the posterior cerebellar artery to the thalamus and occipital cortex. [1]
Aneurysm of the basilar artery and the vertebral arteries: Specialty: Interventional neuroradiology, neurosurgery, neurology Symptoms: None, severe headache, visual problems, nausea and vomiting, confusion [1] Usual onset: 30–60 years old: Causes: Hypertension, infection, head trauma [2] Risk factors: old age, family history, smoking ...
The basilar artery (U.K.: / ˈ b æ z. ɪ. l ə /; [1] [2] U.S.: / ˈ b æ s. ə. l ər / [3]) is one of the arteries that supplies the brain with oxygen-rich blood.. The two vertebral arteries and the basilar artery are known as the vertebral basilar system, which supplies blood to the posterior part of the circle of Willis and joins with blood supplied to the anterior part of the circle of ...
In cases involving the basilar artery (VBD), pathology can occur due to direct compression of cranial nerves, by ischemia related to the dolichoectatic vessel, or by the development of hydrocephalus. Rupture of the dolichoectatic vessel can lead to catastrophic intracerebral hemorrhage .
Basilar artery is #7, and pons is visible below it. Medial pontine syndrome results from occlusion of paramedian branches of the basilar artery. [citation needed]
A silent lacunar infarction (SLI) is one type of silent stroke which usually shows no identifiable outward symptoms, and is thus termed "silent". Because stroke is a clinical diagnosis (that is, it is defined by clinical symptoms), there is debate about whether SLI are considered to be strokes, even though the pathophysiology is presumably the ...
As a result, blood travels up one of the other blood vessels to the brain (the other vertebral or the carotids), reaches the basilar artery or goes around the cerebral arterial circle and descends via the (contralateral) vertebral artery to the subclavian (with the proximal blockage) and feeds blood to the distal subclavian artery (which ...