Definition of Cerebral Infarction
Cerebral infarction is also called ischemic stroke. This disease is caused by various regional blood supply disorders in brain tissue, leading to cerebral ischemia and anoxia necrosis, and then the corresponding clinical neurological deficit.
According to different pathogenesis, cerebral infarction is divided into main types such as cerebral thrombosis, cerebral embolism and lacunar infarction. Among them, cerebral thrombosis is the most common type of cerebral infarction, accounting for about 60% of all cerebral infarctions, so the so-called “cerebral infarction” refers to cerebral thrombosis.
What is the Pathogeny of Cerebral Infarction?
1. Arteriosclerosis: thrombus is formed on the basis of atherosclerotic plaque in the arterial wall.
2. Cardiogenic cerebral thrombosis: Patients with atrial fibrillation are prone to form thrombosis, and the thrombus flows into the brain to block cerebral blood vessels, causing cerebral infarction.
3. Immune factors: Abnormal immunity causes arteritis.
4. Infectious factors: leptospirosis, tuberculosis, and syphilis, which can easily cause inflammation of blood vessels, leading to cerebral infarction.
5. Blood diseases: polycythemia, thrombocytosis, disseminated intravascular coagulation, etc. are prone to thrombosis.
6. Congenital developmental abnormalities: dysplasia of muscle fibers.
7. Damage and rupture of the intima of the blood vessel, so that the blood enters the blood vessel wall and forms a narrow channel.
8. Others: drugs, tumors, fat emboli, gas emboli, etc.
What Are the Symptoms of Cerebral Infarction?
1. Subjective symptoms: headache, dizziness, vertigo, nausea, vomiting, motor and/or sensory aphasia and even coma.
2. Cerebral nerve symptoms: eyes gaze to the lesion side, neurofacial paralysis and lingual paralysis, pseudobulbar paralysis, including choking from drinking and difficulty in swallowing.
3. Physical symptoms: limb hemiplegia or mild hemiplegia, decreased body sensation, unsteady gait, limb weakness, incontinence, etc.
4. Severe cerebral edema, increased intracranial pressure, and even cerebral hernias and coma. vertebral-basilar artery system embolism often leads to coma, and in some cases, deterioration could be possible after being stable and improved, and there is much possibility of recurrence of infarction or secondary hemorrhage.
Post time: Apr-20-2020