摘要(Abstract)：

<正> IS this study,by use of sscreen demons-tration of echorardiography,phonocarediography andelectrocadiography and monitoring blood pressure(BP)skillsat the samtime.the values of QC,A_2E,LV end- systolic andend-diastolic long-and short-axis dimensions,wall thicknessesand area sizes and synchronous right arm Bp were measured inpost-Ml patients within 3 months.before and aftersublingual isosorbide dinitrate and nitroglycerin respectivelyto reduce blood pressure 0.93-1.86Kpa and 1.86-3.72Kpn.Themechanical parameters of LV end-diastolic and end-Systolicpressure volume and stress-strain relations(Pad.Ved.Pes.Ves,Vop,Emax,Dom,maxEav.Es.σed.σafand pumpingx(EF)were calculated through computer programmed process.Emax is sensitive to ventricular contractility,anxEav issensitive to myocardial contractility;Es is sensitive to thedegree of resistance to ventricular filling;σed and σaft arerespectively called as stress-prelond and stress-afterload.Theresults showed that there were moe significant decrense inVed and Yes;more increase in Vop and Emax;more reduction inEs and σed.therefore.It iS considered that the coronaryatery reperfusion by thrombolysis or PTCA can rescure dyingmyocardium.limit the ventricular remodelling and improveventricular contractility and passive fulling state andrelatively reduce proload.This study has established aretatively convenient,reliable,practical and noninvasivemination method,by which the mechanical parameters ofeardial functions can play a very important role in clinicallyassessing the condition of diseases,guiding trentment.evaluating effectiveness and predicting prognoses.This methodhas important values in clinical practice.

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