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2、art,vena ubation,asexperimentalinput;andforconcentricleftaorticcannulation,heartstrokeexports;alltheotherligation;measurednormal,drug-inducedwhole-hearteddecaytimeandtheinputcardiacdrugsatdifferentsbeforetheloadofeachoutputandheartVentricularpreloadisequivalenttoventricularend-diastolic volume, avai

3、lable through the experiment, within a certain range, increasing venous return, ventricular end-diastolic volume increases, the length of myocardial fibers inearlystretch,correspondingtoenhancemyocardialcontractility,volumealsotoincrease.Heartfailure,cardiacfunctioncurvetoright;strengthentheheartmed

4、icine,increasedcardiacoutput,function curve tothe 吳心每搏有效心功吳和right;strengthentheheartmedicine,increasedcardiacoutput,function curve tothe 吳心每搏有效心功吳和2050,521蛙類手術(shù)器械，恒壓灌流裝置，動(dòng)脈和靜脈導(dǎo)管，10ml液，任氏液，B1.2.3.3134.5.分離肝左靜脈約 45mm6.27.10cm10cm,20cm,30cm,40cm。8.234.5.分離肝左靜脈約 45mm6.27.10cm10cm,20cm,30cm,40cm。8.2710.。15。（* 組心輸出（* 組心輸出搏心輸出搏心輸出搏心輸出搏正常心衰0.470.04* 0.640.04* 0.800.07* 0.950.10* A藥0.580.07* B藥0.620.06* 0.760.07* 0.980.10* 1.240.18*的初長(zhǎng)度為2.02.2Ca2+時(shí)心肌的張力，以及縮短的速率上。心功能不全時(shí)，心肌收縮性下降= X 但超過一定限度以后，如心率120/的初