组织多普勒对室性早搏定位诊断的价值

Value of tissue Doppler in position oriented diagnosis of premature ventricular(VP) contraction

目的探讨组织多普勒对室性早搏定位诊断的价值。方法58例室性早搏患者,应用彩色多普勒组织成像技术,采取左室长轴,心尖二腔、四腔及左室短轴切面图,发现室性早搏后冻结,应用组织多普勒成像功能及电影回放,观察室性早搏的起源点及激动程序,并与正常窦性心搏对照分析。结果能明确异位激动起源点的患者56例,定位不明确2例。组织多普勒成像显示:室性早搏激动起源点为鲜亮的红黄杂色斑点,电影慢动作回放时,可见其激动程序为短暂地向周围散射。结论组织多普勒对室性早搏的定位诊断直观且敏感。

Objective To investigate the value of tissue Doppler in position oriented diagnosis of VP. Methods 58 patients with VP were examined by color Doppler tissue imaging(DTI) elected long axis of left heart, apical two-chamber, apical four-chamber and short axis of left heart. Observed the cardic pacemaker and excitation program of VP using DTI and cinema recal. Contrasted it with the usual sinus beat. Results The ectopia pacemaker of 56 patients with VP were clear, the other 2 patients were not clear. Through DTI, found that the pacemaker of VP was a point mixed with red and yellow. When played back slowly, could see the excitation program radiated to surroundings shortly. Conclusion DTI is sensitive and directive for the position oriented diagnosis of VP.