1、Right atriumRight ventricle(Flow )Pulmonary artery(expansion)Pulmonary blood flow Right ventricle(Hypertrophy)Left atrium(Hypertrophy)Left ventricle(Hypertrophy)Ejection volumeSystemic blood flow ShuntSystemic blood（Mixed ）Right atriumLeft atriumLeft ventriclePulmonary hypertensionreversible(dynamic
2、)Irreversible(pulmonary vascular disease)Eisenmeingers syndromeShuntPulmonary artery(expansion)Right ventricle(Hypertrophy)Display position and size of the defect Display shunting Measure pressure gradient Display size of chambers and vessels:Enlarged LA,LV and/or RV 上腔静脉下腔静脉静脉窦型缺损继发孔型缺损原发孔型缺损主动脉冠状静
3、脉窦型Superior and Inferior vena cavaRA(Flow )RV(Hypertrophy)ASD ASD ShuntPulmonary veinLA flow AortaEjection volume Pulmonary artery(expansion)Pulmonary blood flow LV flow Systemic blood flow 导联以S为主，导联以R为主,电轴右偏。RaVR0.5mv,RS 1,V1呈RSr,QRS0.08，示不完全右束支转导阻滞。RV1 SV5 2.5mv，提示右室大。Display position and size Dis
4、play shunting Display paradoxic motion(矛盾运动矛盾运动)of ventricular septum Display size of chambers and vessels:Enlarged RA and RV Dilated MPA Smaller AORAVRPAPA(Flow )Pulmonary hypertensionAOLVLV(expansion)LALA(expansion)Descending aortaSmaller diameterPeripheral arteriesDiastolic pressure decreasedSystemic blood flow Pulmonary artery(expansion)ShuntPulmonary blood flow RARV LA LA(flow )LVLV(flow )AOAO (flow )Mixed blood enter Systemic circulation(Expand)(Hypertrophy)Obstruction to RV outflowPulmonary blood flow Oxygen exchange is insufficientVSD ShuntOverriding aortaShunt（）HypoxiaClubbing杵状指杵状指
