缺血性脑白质病变“虚气留滞”病机探讨

Pathogenesis of ischemia leukoencephalopathy:deficient-qi stagnation

虚气留滞是指元气虚衰(虚气),气血津液等流动物质发生阻滞(留滞)的病机变化。缺血性脑白质病变发病以虚气为本,留滞为标。虚气有气血阴阳偏损,且易致气滞血瘀、痰阻毒聚;留滞以气滞为先,痰阻为渐,血瘀为病,毒聚为损。虚气与留滞互为因果致病,影响缺血性脑白质病变的发生、发展及预后转归。

Deficient-qi stagnation is a pathogenetic change,meaning the stagnation and retardation of qi,blood,fluid and humor induced by deficiency of primordial qi（deficient-qi）.The root of occurrence of ischemia leukoencephalopathy is deficient-qi and the tip is stagnation.Deficient-qi can be manifested as particular damage of qi,blood,yin or yang,and easily induces qi stagnation and blood stasis,and phlegm obstruction and toxin accumulation.In the pathogenetic course of deficient-qi stagnation,qi stagnation comes first,phlegm obstruction appears gradually,blood stasis leads to the disease,and toxin accumulation tends to result in the damage.Deficient-qi and stagnation interact as both cause and effect and they influence the occurrence,development,prognosis and outcome of ischemia leukoencephalopathy.