二尖瓣关闭不全患者的心功能减退标志

目的探讨二尖瓣关闭不全病人R波波峰出现时间与心功能的关系。方法测量33例左室射血分数＜50％及22例左室射血分数≥50％对照者的最大R波波峰时间。结果左室射血分数＜50％与对照者相比平均最大R波波峰时间升高，P＜0.0001。结论证实R波波峰时间与心功能呈负相关。

Signs of Cardiac Function Declining in Mitral Incompetence

Objective To explore the relations between R peak time and cardiac function in pa-tients with mitral incompetence. Methods Left ventricular ejection fraction of 33 patients (subjectgroup) less 50％ and 22 patients (control group) over 50％ was given ECG to determine R peak time.Results The max average of R peak time was higher in subject group than in control group (P ＜0. 0001). Conclusion The results indicate that R peak time has negative correlation to cardiac function.