左心室向心性肥厚发展与收缩功能

目的与方法：运用Ｍ型超声心动图探讨高血压病向心性脑厚程度与收缩功能的相关关系。方法：收缩功能（心率校正的ＦＳ，ｙ轴）与向心性肥厚程度（左室重量与左室容积之比ＬＶＭ／ＬＶＣＶ，ｘ轴）的呈曲线相关关系，其曲线方程为ｙ＝－３１．１３９ｘ２＋１４６．１９２ｘ１－１３０．４３。ＬＶＭ／ＬＶＣＶ为２．３５时，其心率校正的ＦＳ为最大４１．６３。结论：在心肌肥厚的初期，心肌肥厚使左心室的收缩功能起代偿性增强，当心肌增厚到一定程度时，左室收缩功能随心肌进一步肥厚而呈下降趋势。

Development of Left Ventricular Concentric Hypertrophy and Systolic Function

Objective and Method:To assess the correlation between degree of left ventricular(LV) concentric hypertrophy and systolic function. Results:There was curve correlation between systolic function(FS corrected by heart rate) and degree of left ventricular concentric hypertrophy(ratio of LV mass to cavity volume, LVM/LVCV). The curve correlation equation was:^y=-31.139 x 2 146.192 x 1-130 43. When LVM/LVCV ratio was 2.35, FS corrected by heart rate reached its maximum: 41.63. Conclusions:In the early stage of LV concentric hypertrophy, the LV systolic function enhanced, however when LV concentric hypertrophy was developed to a certain degree,the decompensation of LV systolic function ensued.