5、anthatofAgroupandCgroup,TMTscoreswerelowerthanAgroupandCgroup.ConclusionIntravenousInhalationAnesthesiainelderlypatientswithcognitivedepthcorrelationfunction,thedeterminationofBISvalueintherangeof40~50,thesmallereffectonthecognitivefunction,whichcanbeusedtoguidetheclinicaltreatment. K