昆明地区成人静息心输出量多普勒超声法正常值及其影响因素分析

The Normal Value of Cardiac Output Determined by Doppler Ultrasound Technique and Effects of Some Factors on Cardiac Function in Adults Residing in the Kunming Area

本文报告了以多普勒超声胸骨上升主动脉法检测昆明地区358例年龄20—81岁(平均46±16岁)正常人心输出量及其有关指标的结果。比较了不同年龄组间心功能指标的差异;并通过多因素分析探讨了性别、体格大小、特别是年龄增长及与之伴随的主动脉内径、射血时间、心率等变化与心功能之间的相关关系。

The normal value of cardiac output and relative indices of cardiac function were determined using Doppler ultrasound technique,by means of measurinp the blood flow velocity in the ascending aorta on a level with the suprasternal notch,in 358 healthy adults aged 20 to 81 years(mean 46±16)in the Kunming area.The diff- erences of the indices of the cardiac function among persons prouped on the basis of age were analysed.The effects of sex,body size and particularly aging and the changes of the aortic dimension,ejection time and heart rate associated with aging on the cardiac function were studied using the method of multivariate aoalysis.