1, such symptoms do you also have? The patient has been smoking for a long time, but in recent months the phenomenon of frequent dizziness, and occasionally walk when feeling unsteady situation, the left hand recently felt no previous strength. When those symptoms just appeared, think the body has always been healthy patients are not particularly concerned, and then because of a sudden and unexplained fall, resulting in a rib fracture, go to a Chinese medicine practitioner to adjust the left side of the pulse can not be touched, in the hospital checkup found that the left upper limb of the blood pressure than the right side is actually lower than the 30mmHg. 2, what is the cause of such a symptom? Why is this? With the intermittent dizziness episodes more and more frequent, the patient was anxious, and immediately did a detailed examination in the vascular surgery. The results of the examination revealed that the left subclavian artery was narrowed and occluded. I believe that everyone and the patient’s questions the same, why the subclavian artery occlusion will lead to his symptoms? 3, why will lead to dizziness without treatment First of all, the subclavian artery, a left and a right, basically symmetrical, these two blood vessels are mainly to our two arm blood supply, but in the proximal end of the two blood vessels about 4cm or so there will be two important blood vessels, the vertebral artery, but also a left and a right, basically symmetrical, from the neck upwards on both sides of the neck, in the cranium, the two vertebral arteries converge into a thick basilar artery, and then by the vertebral basilar artery supplying blood, and then by the vertebral basilar artery. The vertebral basilar artery then supplies blood to the brainstem, cerebellum, thalamus, and other vital centers, providing 40% of the blood flow to the entire brain, and branch arteries can also be involved in the cremasteric medulla. As you can imagine, originally the blood flow is from bottom to top to the cerebellum, but when the subclavian artery is narrowed or occluded, between the basilar artery and the subclavian artery, there exists a kind of reverse pressure difference, and when the pressure difference reaches a certain level, the direction of the vertebral artery blood may turn into from the top to the bottom, which is equivalent to not only not supplying the cerebellum and other parts of the brain with blood, but instead “stealing blood” from the cerebellum, etc., so that the brain is not supplied to the cerebellum. Instead of supplying blood to the cerebellum, it “steals blood” from the cerebellum and other parts of the brain, so that the blood supply to the brain decreases to different degrees. With the development of the disease, the cerebellar blood supply will be insufficient performance, such as: sudden onset of dizziness, one side of the face, limb weakness or numbness, or a short period of time, speech difficulties, darkness in front of the eyes, or the emergence of a transient loss of consciousness, amnesia, and so on. If the treatment is not carried out actively, the patient may fall down suddenly as the patient did, resulting in fractures and other traumatic manifestations, and even leading to more serious consequences such as posterior circulation infarction, and once the posterior circulation cerebral infarction occurs, the mortality rate is as high as 80%. 4, how should be treated do not need to be afraid At present for the subclavian artery stenosis occlusion disease treatment methods are mainly three: (1) drug therapy: drugs is the most basic treatment for atherosclerosis caused by stenosis occlusion, should be relevant drug therapy, such as control of blood glucose, blood lipids, secondary prevention, to prevent cardiac, cerebral and peripheral vascular events. (2) Surgical arterial reconstruction: This includes various bypass procedures (carotid-subclavian artery, subclavian-subclavian artery, etc.), but because of too much damage, it is no longer the treatment of choice. (3) Endoluminal treatment of subclavian artery: including balloon dilatation, stent implantation and other minimally invasive procedures. It is now used as the treatment of choice because of the advantages of less trauma and reproducible operation.