The purpose of this study was to determine whether the extent of prolongation of the transisthmus interval after ablation predicts complete bidirectional block.
通过比较心房扑动（简称房扑）成功消融前后右心房峡部时间间期，分析峡部时间间期的延长程度对峡部完全性双向阻滞的预测价值。
During acute AF, there are multiple and discrete excitation wave fronts or reentry activities were found in both LA and RA, and bidirectional block regions could be shown.
结果窦性心律时窦房结发出冲动，激动右心房上部并向右心房下部和左心房传导，而房颤时双心房均可见方向不一、片段的激动波或大的折返环，可见多个传导阻滞区。
Trainguard MT provides moving-block technology and WLAN wireless-continuous-bidirectional data transmission.
TrainguardMT能提供移动闭塞技术及WLAN下的双向不间断无线数据传输。
Trainguard MT provides moving-block technology and WLAN wireless-continuous-bidirectional data transmission.
TrainguardMT能提供移动闭塞技术及WLAN下的双向不间断无线数据传输。
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