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 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.
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.
Symptoms are most commonly bilateral and symmetrical, but they may be unilateral; leg pain is usually more troubling than back pain. [ 6 ] Pseudoclaudication, now generally referred to as neurogenic claudication , typically worsens with standing or walking, and improves with sitting, and is often related to posture and lumbar extension.
TOS can be related to cerebrovascular arterial insufficiency when affecting the subclavian artery. [8] It also can affect the vertebral artery, in which case it could produce vision disturbances, including transient blindness, [9] and embolic cerebral infarction. [10]
Tricuspid insufficiency, a valvular heart disease also called Tricuspid regurgitation, refers to the failure of the heart's tricuspid valve to close properly during systole; Vertebrobasilar insufficiency (VBI), or vertebral basilar ischemia, a temporary set of symptoms due to decreased blood flow in the posterior circulation of the brain
Vertebral artery dissection is one of the two types of cervical artery dissection.The other type, carotid artery dissection, involves the carotid arteries.Vertebral artery dissection is further classified as being either traumatic (caused by mechanical trauma to the neck) or spontaneous, and it may also be classified by the part of the artery involved: extracranial (the part outside the skull ...
Mechanical Modic changes might initially reflect bleeding, oedema, and vascularization following trauma or oedema associated with the repair process after micro-fractures within the endplate and the vertebral bone.