Wednesday, March 26, 2008

What to bring up the bloody cerebral infarction?

Hemorrhagic infarction refers to the brain artery embolization or its branches, or thrombosis. After the occurrence of cerebral infarction, there artery open, blood vessel leakage from the disease, or pierced into the brain tissue and blood vessel formation. Its pathogenesis, may be due to a cerebral vascular embolization, its feeding area diffuse brain tissue ischemia, hypoxia, especially the vascular wall permeability-increasing capillary wall or paralysis, when the collateral circulation to build or over-perfusion, anastomosis with blood trying to enter through the paralysis of vascular damage, leading to bleeding. After cerebral infarction arteries high rate of recanalization. Japanese scholars into the wild-zhong Lloyd's reported that the arteries were 40% to 75% can be re-opened, mostly in the pathogenesis after 2 to 3 days, a small portion of the re-opened within seven days. Individual cases in a few months or a few years later can be re-opened. It was through domestic pathophysiology study also confirmed that arterial bleeding stroke is the result of re-opened. Opened sooner, the more opportunities hemorrhage; embolization of cerebral infarction, hemorrhagic infarction than non-embolic infarction; large infarction than small infarction; early anticoagulation, thrombolytic therapy, the widening Rong, vasodilating drugs and early surgery, and so on, may promote the occurrence of a hemorrhagic infarction. Hemorrhagic stroke is the original incidence of cerebral infarction, infarct artery recanalization, and the merger bleeding. Clinical characteristics of the original signs and symptoms increase, and also the emergence of new symptoms and signs. Their signs and symptoms increase the extent depends on the amount of bleeding and the number of secondary bleeding time, and whether application of anticoagulation, thrombolysis, solubilization and vasodilative expanding drug treatment. Generally speaking, the focal exudative bleeding heavier and more not obvious. Infarction within one week after the bleeding is often secondary to severe symptoms. The first two weeks after the bleeding, the symptoms have no obvious increase. Early use of anticoagulants, vasodilators thrombolytic agents and drug treatment, the symptoms will increase. Symptoms increase awareness of the performance of obstacles, high intracranial pressure, limb paralysis degree aggravated or new signs, serious adverse prognosis. Although sometimes asymptomatic deterioration, but after a certain period of time after treatment were invalid, but also the possibility of secondary hemorrhage. The occurrence of hemorrhagic infarction, patients with early activities, emotional, blood pressure fluctuations and the early application of anticoagulants, vasodilators such as improper treatment of drug-related. Therefore, patients should pay attention to early control emotions, positive dehydration treatment to prevent fluctuations in blood pressure, it is premature application of vasodilator, especially anticoagulant drugs to prevent the occurrence of hemorrhagic stroke.

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