... FCEMI 释义：[=fetal cardiac electromechanical intervals]胎心电机械间期 intermenstrual period 释义：经间期 ECG interval 释义：P-R间期(心电图) ...
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目的探讨经电视胸腔镜切除左胸交感神经治疗先天性QT间期延长综合征的方法和效果。
Objective to assess the feasibility, safety and effectiveness of video-assisted thoracoscopic sympathectomy (VATS) for the treatment of congenital long QT syndrome.
方法对39例PR间期延长(研究组)和141例PR间期正常(对照组)患儿房室传导功能进行了经食道心房调搏研究。
Methods The transesophageal pacing was performed in 39 children with prolonged pr interval (study group) and 141 children with normal pr interval (control group).
应用经食管超声心动图测量肺静脉血流频谱曲线收缩早期逆向R波峰值流速（PVR）和收缩期S波峰值流速（PVS） ，分析PVR和PVS与其前心电图R R间期的关系。
The peak velocities of the early systolic reversal wave (PVR) and the systolic forward wave (PVS) were measured. The relationships between the preceding R-R intervals and PVR, PVS were analyzed.
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