Cause of transient ischemic attack, transient ischemic attack is caused by what the cause

transient ischemic attack is caused by what the?

this disease and hypertension, atherosclerosis, and its incidence may be caused by many factors.

1. microthrombi: carotid and vertebral artery atherosclerotic stenosis of the mural thrombus, plaque and its decomposition products in the blood, platelet aggregation and other free things off, the blocked brain arteries, When the embolus fragmentation or move to the distal ischemic symptoms.

2. cerebral vasospasm: the internal carotid artery or vertebral artery atherosclerotic plaques that narrow the vessel lumen, where blood flow resulting vortex flow, when the vortex acceleration, stimulate blood vessel wall lead to vascular spasm, temporary nature of ischemic attack, deceleration time vortex, the symptoms disappear.

3. cerebral hemodynamics: carotid and vertebral artery occlusion or stenosis, such as the patient had a sudden low blood pressure, due to decreased cerebral blood flow, which led to the onset of the disease; blood pressure rises , the symptoms disappear, the disease more common in blood pressure fluctuations prone to the disease onset, in addition, arrhythmia, atrioventricular block, myocardial damage may make a sudden decrease of regional cerebral blood flow and disease.

4. carotid artery distortion, too long, knotted or vertebral artery compression by cervical bone spur proliferation, when turned around when the onset of the disease can cause.