What Happens If The Vertebral Artery Is Blocked?
What Happens If The Vertebral Artery Is Blocked? These arteries supply blood to the brainstem and the cerebellum. Like carotid artery stenosis, vertebral artery stenosis is highly dangerous and can prevent oxygen from reaching the brain. When the brain doesn’t get enough oxygen, a stroke, or even death, can occur. What is vertebral artery syndrome?