【摘要】 目的探讨动态血压水平和老年原发性高血压患者左室心肌做功指数(MPI)的关系。方法选取我院于2014年3月至2015年3月就诊的老年原发性高血压患者86例。对患者进行心脏彩超检查,测量并计算患者的MPI。根据左心室MPI值分为A组(MPI>0.49)45例和B组(MPI≤0.49)41例,测量并记录2组的平均诊室血压以及24 h、日间和夜间的平均血压,采用多因素线性回归分析探讨MPI的独立影响因素。结果 A组患者24 h和日间平均收缩压,24 h、日间和夜间收缩压负荷,24 h、日间和夜间平均舒张压均高于B组,多因素回归分析显示,24 h平均收缩压(β=0.237,P=0.006)、日间平均舒张压(β=0.347,P<0.001)与MPI独立相关。结论左心室的MPI的高低与患者动态血压水平和血压负荷有关。更多还原

【Abstract】 Objective To investigate the relationship of blood pressure with myocardial performance index( MPI) in elderly patients with essential hypertension. Methods Eighty-six elderly patients with hypertension in our hospital were selected from March 2014 to March 2015. MPI was calculated in all patients by echocardiography. According to MPI of left ventricle,the patients were divided into group A( MPI>0. 49,45 cases) and group B( MPI≤0. 49,41 cases). The mean blood pressure in consulting room of the two groups was measured,and the mean blood pressure of 24 h,daytime or nighttime was measured,and the independent relative factors of MPI were analyzed by multi-factor linear regression. Results In group A,the average systolic blood pressure,24 h,daytime or nighttime systolic pressure,and 24 h,daytime and nighttime diastolic blood pressure were higher than those in group B. Multivariate liner regression analysis showed that 24 h average systolic blood pressure( β = 0. 237,P = 0. 006),daytime average diastolic blood pressure( β = 0. 347,P< 0. 001)were independent risk factors of MPI. Conclusions The level of MPI of left ventricle is related to the ambulatory blood pressure and blood pressure load.更多还原