18.E3 1.Why is the lub sound recorded around the peak of the QRS complex? 2.Is the time delay between the QRS complex and the lub sound always the same? Why is this so? 3.Why is the dub sound recorded around the peak of the T wave? 4.Is the time delay between the T wave and the dub sound always the smae? Why is this so? 19.E1 1.What produces the QRS complex in the ECG? 2.What corresponds to the peak of the pulse viewed on Channel 4? 3.What cardiovascular processes take place between these two events? 4.What does the time interval between the R wave and the peak of pulse represent? 5.Does the falling phase of the pulse have a small, transient plateau, as shown in the lower trace of Figure 6-9 on page 104 (arrow)? This plateau is called the dicrotic notch. What event on the Blood Flow channel (CH3) corresponds to the dicrotic notch? 6.Would you expect a transient increase in blood pressure as the elastic arteries recoil, after being stretched by blood entering from the ventricles? --------------- 就这10题...打完才想到其实有电子档可以看 orz http://www.iworx.com/LabExercises/lockedexercises/LockedECGSoundsNL.pdf http://www.med.und.nodak.edu/depts/pharmphys/301/iworx/ECG.pdf 老师说报告就稍微分析一下数据...(自行体会罗~"~) 重点就放在回答这些题目吧!!! --

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