目的探讨体表心电图对标测电极导管进行床边紧急心脏起搏的指导价值。

Objective to evaluate the guiding value of electrocardiogram to bedside urgent cardiac pacing by invading mapping electrode catheter.

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目的：评价信号平均心电图（SA-ECG）时域分析和频谱时间标测在预测冠心病心律失常事件（AE）方面的差异。

Objective:The purpose of this study was to compare time domain analysis (TDA) of signal-averaged electrocardiogram (SA-ECG) with spectrotemporal mapping (STM) in predicting arrhythmic events (AE).

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