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主动脉瓣狭窄时,同步记录V_2、V_6导联,可出现R_v_6峰早于S_v_2峰,R_v_6峰和S_v_2峰同时发生,R_v_6峰晚于S_v_2峰(R_v_6峰延迟)。为了研究R_v_6峰延迟是否可作为主动脉瓣狭窄时左室射血功能受损的预测指标,作者对R_v_6峰延迟与左室造影血流动力学以及V_1导联P波负向终末电势(Morris指数)进行分析比较。资料和方法主动脉瓣狭窄121例,男82例,女39例,年龄22—88岁,平均57岁。经超声心动图,右左心导管,左室造影,选择性冠脉造影以排除其它心脏病变。同步记录胸前导联,纸速为100mm/s。109例在窦律时测量了Morris指数,即V_1导联P波终末负向部分的波幅乘以时间。
In the aortic valve stenosis, the V_2 and V_6 leads were recorded synchronously. The R_v_6 peak appeared earlier than the S_v_2 peak, the R_v_6 peak and the S_v_2 peak occurred simultaneously, and the R_v_6 peak was later than the S_v_2 peak (R_v_6 peak delay). To investigate whether R_v_6 peak delay can be used as a predictor of left ventricular ejection fraction (LVEF) loss in patients with aortic stenosis, we compared the relationship between R_v_6 peak delay and left ventricular diastolic hemodynamics and negative P-wave terminal potential of V_1 Index) for analysis and comparison. Materials and Methods 121 cases of aortic stenosis, 82 males and 39 females, aged 22-88 years, mean 57 years. Echocardiography, right heart catheterization, left ventricular angiography, selective coronary angiography to rule out other heart disease. Synchronous recording chest lead, paper speed of 100mm / s. 109 cases of sinus rhythm Morris index was measured, that is, the V_1 lead P wave end of the negative part of the amplitude multiplied by the time.