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用Ag—AgCl电极于50例正常人的前胸体表,记录到每搏窦房结电位。它在相应的心电图P波前出现,窦房传导时间为54～174ms,舒张期斜坡不明显,向上斜坡之dv/dt为0.33～2.17mv/s,波幅7～45μv。在4条麻醉狗,同步记录体表窦房结电图、腔内窦房结电图和肢体导联心电图,作对比定性观察,证实了从体表记录到的P前波是窦房结区电活动在体表的反映。通过对13例病态窦房结综合症(简称SSS)及10例其他心律失常患者的观察,显示出它在反映心脏传导系统各部分、特别是窦房结的电活动方面的优越性,能起到常规心电图无法起到的作用。
Ag-AgCl electrode in 50 cases of normal human chest surface, recorded to each stroke sinus node potential. It appeared in the corresponding ECG P wavefront, sinoatrial conduction time was 54 ~ 174ms, diastolic slope is not obvious, the upward slope of the dv / dt is 0.33 ~ 2.17mv / s, amplitude 7 ~ 45μv. In 4 anesthetized dogs, simultaneous recording of surface sino-atrial node electrogram, intracavitary sino-atrial node electrocardiogram and limb lead electrocardiogram, compared qualitative observation, confirmed from the body surface recorded P wave before the sinus node area Electric activity in the body surface reflection. Through the observation of 13 cases of sick sinus syndrome (SSS) and 10 cases of other arrhythmias, it shows its superiority in reflecting the electrical activities of various parts of cardiac conduction system, especially the sinoatrial node, To the conventional ECG can not play a role.