心电图的解读课件.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.,ELECTROCARDIOGRAM,The First Affiliated Hospital of Shantou University Medical College,卢成志,The Standard 12-lead Electrocardiogram,How to measure each wave:,amplitude duration,25,mm/s,ELECTROCARDIOGRAM,ECG records the changing potential of the field imparted by the heart.,ECG dose not record directly the electrical activity of the heart.,ECG record the electrical activity of the heart from the body surface.,插入离子通道图片,Electrical basis and theory,Electrical basis and theory,depolarization,dipole,repolarization,Electrical basis and theory,Electrical basis and theory,q,Clinical,electrocardiolopy elementary knowledge,Vector,Resultant vector,Loop,Electrical basis and theory,The Standard 12-lead Electrocardiogram,SA node,Bachmann,AV node,His bundle,Left and right branch of bundle,Pukinje fiber,The Standard 12-lead Electrocardiogram,P Wave,P-R interval,QRS Complex,ST segment,T Wave,Q-T interval,The Standard 12-lead ElectrocardiogramR Wave,form,Lead System of the ECG,Limb leads,Einthoven t,rigone,Hexaxial system,Lead System of the ECG,Chest leads,Chest leads,Lead System of the ECG,.,.,ECG EVALUATION,The Standard 12-lead Electrocardiogram,How to measure each wave:,amplitude duration,25,mm/s,How to calculate the heart rate,Heart Rate=60/R-R duration,Mean QRS axis,Cardiac Rotation,.,.,NORMAL ECG,P Wave,P-R Interval,QRS complex,J point,ST Segment,T Wave,Q-T Interval,U Wave,.,.,NOMAL ECGP Wave,form：I、II、avF、V,4-6,duration：0.12s,amplitude:,Limb leads,0.25mV,Chest leads,2.5mV,R,V5,+S,V1,3.5 or 4.0mV,R,I,1.5mV,R in aVL1.2mV,aVF2.0mV,S in V,1,2.4mV,R,I,+S,III,2.5mV.,left axis deviation,QRS duration0.09ms.,ST segment and T wave,left,Ventricular,enlargment,Atrial and Ventricular hypertrophy,(,二）,Right,Ventricular,enlargment,V1 lead R/S1,V5 lead R/S1.05mV.,right axis deviation+90.,ST-T change,Right,Ventricular,enlargment,Atrial and Ventricular hypertrophy,(,三）,Biventricular,enlarg,e,ment,Approximately normal ECG.,Left or Right,Ventricular,Hypertrophy ECG,Biventricular,Hypertrophy ECG,Biventricular,enlarg,e,ment,V.,Ischemia and ST-T Segment,Forms:,(1),Ischemia:,a.subendocardial ischemia b.subepicardial ischemia,(2),Injury.,clinical significance,differential diagnosis,Ischemia and ST-T Segment,Ischemia and ST-T Segment,Ischemia and ST-T Segment,Ischemia and ST-T Segment,VI.,Myocardial Infarction,(一）,Forms and mechanism,1),ischemia,2),infury,3）infarction,VI.,Myocardial Infarction,VI.,Myocardial Infarction,VI.,Myocardial Infarction,VI.,Myocardial Infarction,（,二）,Evolution of the infarction and duration the ECG,1)initial phase,2)acute phase,3),subacute,phase,4)recovery phase,Myocardial Infarction,VI.,Myocardial Infarction,The ECG and location of infarction,Myocardial Infarction,Myocardial Infarction,Nonspesific patterns of infarction,non-Q wave myocardial infarction,infarction complicated with other diseases,differential diagnosis,