Search results
Results from the WOW.Com Content Network
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]
The phenomenon of flow reversal is called subclavian steal or subclavian steal phenomenon, regardless of whether signs or symptoms are present. [1] In this condition, the affected arm may receive blood supply flowing in a retrograde direction down the vertebral artery, potentially compromising the vertebrobasilar circulation.
The Vertebral Artery Test or Wallenberg Test is a physical exam for vertebral artery insufficiency. Commonly, the VA test involves cervical spine motion to an end-range position of rotation, extension or a combination of both. At this point, the physician assesses for vertebrobasilar insufficiency (VBI) symptoms.
A rare but severe complication of this disease is vertebrobasilar insufficiency. [7] This is a result of the vertebral artery becoming occluded as it passes up in the transverse foramen. The spinal joints become stiff in cervical spondylosis. Thus the chondrocytes which maintain the disc become deprived of nutrition and die.
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 upper brainstem and midbrain.
vertebrobasilar insufficiency; optic neuritis; visual snow syndrome; Vitreous shrinkage or liquefaction, which is the most common cause of photopsia, causes a pull in vitreoretinal attachments, irritating the retina and causing it to discharge electrical impulses. These impulses are interpreted by the brain as flashes.
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.
Vertebrobasilar insufficiency, notably Bow Hunter's syndrome, is a rare cause of positional vertigo, especially when vertigo is triggered by rotation of the head. [ 45 ] [ 46 ] Management