Symptoms of cerebral artery stenosis

summary

The carotid artery is the main blood supply to the brain. It is responsible for transporting blood from the heart to the large blood vessels in the head and neck. Carotid artery stenosis can lead to cerebral ischemia. According to the investigation, more than 60% of cerebral infarction is caused by carotid artery stenosis. What are the symptoms of carotid artery stenosis? When there are symptoms, the examination of carotid artery should be done. Let's talk about the symptoms of cerebral artery stenosis.

Symptoms of cerebral artery stenosis

The first is the lack of blood supply to the brain. The lack of cerebral blood supply caused by carotid artery can lead to drowsiness, memory loss, dizziness, vision loss, tinnitus, mental inability to concentrate, and even limb numbness, inability to move, even loss of consciousness and speech.

After carotid artery stenosis, the vascular lumen becomes narrower, and the blood can not enter the brain in time, so the cerebral blood supply is insufficient. Once the brain is ischemic or anoxic, people will have disturbance of consciousness or even coma. But in general, patients can relieve symptoms in a short time, the longest is not more than 24 hours.

Cerebral ischemia symptoms; There may be tinnitus, blurred vision, dizziness, headache, memory loss, drowsiness or insomnia, dreaminess, etc. There may also be transient ischemic attack, such as vertigo and black membrane. Severe cases may have paroxysmal coma, even hemiplegia, aphasia and coma. A few patients have vision loss, hemiblindness, diplopia and even sudden blindness. Carotid artery stenosis can cause ocular ischemic manifestations, such as corneal leukoplakia, cataract, iris atrophy, retinal atrophy or pigmentation, optic disc atrophy, venous hemorrhage, etc. Cataract is the main cause of blindness. When the first segment of subclavian artery is occluded, the symptoms of cerebral ischemia may be caused or aggravated by subclavian artery steal.

matters needing attention

The early signs and symptoms of carotid stenosis, once the body feels uncomfortable, may be due to the symptoms of the disease, must not be ignored, to timely treatment.