Vertebrobasilar insufficiency Syndrome

Question 1

Epidemiology of VBI

Answer 1

1/4 of strokes and TIA’s are located in VB distribution. M>W 70+

Question 2

aetiology of VBI?

Answer 2

Atherosclerotic plaques or artery dissection. Stroke caused by hemodynamic comprimise, thrombus and embolism.
Subclavian steal due to subclavian stenosis. Cervical arthritis or spondylosis

Question 3

pathogensis of VBI

Answer 3

Transient insufficient perfusion of the brain via vertebrobasilar arteries.
And occlusion path similar to stroke/tia

Question 4

natural history of VBI

Answer 4

cerebral infarction

Question 5

clinical manefestations of VBI

Answer 5

Drop attacks with cervical extension

Question 6

Symptoms

Answer 6

Vertigo, Visual and Auditory disturbances, orofacial sensory change, dysphagia, dysarthria, drop attacks, disorientation, anxiety, nausea, vomiting, tremors, sweating, pallor, lightheadedness, fainting, other neuro symptoms

Question 7

physical signs

Answer 7

possibly postive with Hautants test,

i.e. asking seated patient to look up and behind

Question 8

complications

Answer 8

same as stroke, i.e. brain damage

injury from falling?

Question 9

prognosis

Answer 9

risk of stroke