Macruz值和P波宽度及P波终末电势对判别高血压病左室结构和功能改变的作用

Comparison of P/ PR Segment,Width of P Wave and P Wave Terminal Force in Lead V_1 in Evaluation of Left Ventricular Structure and Function in Patients with Essential Hypertension

目的:比较心电图Macruz值(P/PR段)和P波宽度及P波终末电势(PTFV1)对判断高血压病左室结构和功能改变的作用。方法:测量81例高血压病患者及39例正常人Macruz值、P波宽度、PTFV1、左室重量指数(LVMI)、左室舒张早期充盈速度峰值(E峰)和晚期充盈速度峰值(A峰)及A/E值。结果:随左室肥厚(LVH)的发生,Macruz值和PTFV1及P波宽度明显增大,且前二项指标与LVMI及A/E中、高度相关;LVH组中Macruz值异常率为71.4%,高于PTFV1和P波宽度的异常率。结论:Macruz值和P波宽度及PTFV1三项指标从心电学角度反映了高血压时LVH,其中Macruz值对反映高血压所致的舒张功能异常最为敏感。

Objective:To compare the electrocardiographic P/ PR segment,width of P wave and P wave terminal force in lead V1(PTFV1) in evaluating the change of left ventricular structure and function in hypertensive patients.Methods:P/ PR segment,width of P wave,PTFV1,left ventricular mass index(L VMI) ,left ventricular early diastolic filling peak velocity(E) ,later diastolic filling peak velocity (A) were measured in 81 hypertensive patients and 3 9healthy controls.Results:With left ventricular hypertrophy(L VH) P/ PR segment,width of P wave, PTFV1increased accordingly.P/ PR segment,PTFV1were correlated significantly with A/ E.In L VH group,the abnormality rate of P/ PR segmentwas higher than those of P wave and PTFV1. Conclusion:P/ PR segment,width of P wave,PTFV1reflect the ventricular hypertrophy in hypertensive patients,and the change of P/ PR segment may be the best parameter for the left ventricular diastolic function.