3、esultsThecardiographchangeinvaryingdegreestookplacein98caseamongwhichtheincidenceofSTTchangeandarrhythmiaisrelativehigh.ConclusionThethoracotomyaffectsthecardiographincertaindegree.Weshouldmakefullpreparationsforperioperationtopreventandreducetheeffectofthepatients’heartandcardiograph. Ke