نتایج جستجو برای: vertebrobasilar insufficiency
تعداد نتایج: 101745 فیلتر نتایج به سال:
BACKGROUND Head and neck movements may cause vascular compression that produces a syndrome of vertebrobasilar insufficiency. Vertebrobasilar circulation was examined noninvasively in two patients who were able to provoke these symptoms repeatedly on demand. CASE DESCRIPTIONS Blood flow velocities in the basilar artery (case 1) and both posterior cerebral arteries (both cases) were measured co...
A study of cerebral and cerebellar blood flow reactivity to acetazolamide by xenon-133-inhalation single photon emission computed tomography (133Xe SPECT) was carried out in a patient with bouts of transient basilar ischemia, whose neurological examination, computed tomographic scan, and auditory evoked potentials were normal. Though the patient was symptom-free at the time of the study, 133Xe ...
BACKGROUND Vertebrobasilar insufficiency vertebrobasilar (VBIV) is a serious nerve disease and many old people suffer from it. Acupuncture has been widely applied in the treatment of VBIV. However, to our knowledge, there has been no systematic review or meta-analysis of randomized controlled trails regarding the effectiveness of this treatment. Here, we provide a protocol to evaluate the effec...
Of the many causes of vertebrobasilar insufficiency (VBI), extrinsic compression of the vertebral artery (VA) is relatively uncommon. A syndrome of VBI caused by extrinsic compression of the VA secondary to head rotation has been termed positional vertebrobasilar ischemia. The authors present a case of transient VBI caused by herniation of a cervical disc. Transcranial Doppler ultrasonography w...
The subclavian steal syndrome is characterized by a subclavian artery stenosis located proximal to the origin of the vertebral artery. In this case, the subclavian artery steals reverse-flow blood from the vertebrobasilar artery circulation to supply the arm during exertion, resulting in vertebrobasilar insufficiency. As the vertebrobasilar arterial system feeds both the peripheral and central ...
PURPOSE To report isolated upgaze palsy in a patient with a dolichoectatic vertebrobasilar artery. CASE REPORT We report a 48-year-old man who showed upgaze palsy and convergence insufficiency. The left vertebral artery and basilar artery were shown to be greatly expanded, elongated and tortuous in cranial magnetic resonance imaging (MRI). The vertebrobasilar artery runs along the sulcus basi...
Objectives: The aim of the investigation was to explore the nature and changes in blood flow in the vertebrobasilar system of the fetus and newborn in breech presentation. Methods: Was conducted the study of the cerebral blood flow (middle cerebral artery, vertebral artery, basilar artery) in 262 fetuses with breech presentation. Results: At 32–34 weeks of pregnancy impaired blood flow in the v...
N Engl J Med 2005;352:2618-26. Copyright © 2005 Massachusetts Medical Society. ighty percent of strokes are ischemic. twenty percent of ischemic events involve tissue supplied by the posterior (vertebrobasilar) circulation (Fig. 1). The paralysis of vertebrobasilar stroke can be devastating, and some forms have high rates of death. 1 Many cases of vertebrobasilar disease remain undiagnosed or a...
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