Ultrastructure of cerebral tissue, lactate content in venous return blood, ATP content in cerebral tissue and activity of nitric oxide synthetase (NOS) in cerebral cells were measured.

检测各组脑组织超微结构、颈静脉血乳酸含量、脑组织AT P含量和一氧化氮合成酶(NOS)活性。

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Venous disorders of the lower extremity may be divided hemodynamically into 2 groups: blood reflux and blockage of venous return.

下肢静脉疾病按血流动力学变化，可分为血液倒流和回流障碍两大类。

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