正常人颈总动脉、肱动脉、胫后动脉牛顿射血力分析

目的 运用多普勒超声技术检测正常人颈总动脉、肱动脉、胫后动脉的牛顿射血力,探讨正常人体多处外周动脉牛顿射血力变化的意义.方法 纳入30例正常人,将多普勒超声探头分别置于受试者左侧颈总动脉起始段、左侧肱动脉、左侧胫后动脉,测量以上动脉的血管内径、血流加速度及加速期流速积分,根据牛顿第二定律F=ma计算出牛顿射血力.结果 30例正常人左侧颈总动脉的血管内径为(0.59±0.05)cm,血管截面积为(0.28±0.05)cm2,血流加速度为(1 681.53±1 590.88)cm/s2,加速期流速积分为(4.31±1.01)cm,牛顿射血力为(1 941.73±958.68)dynes.左侧肱动脉的血管内径为(0.32±0.04)cm,血管截面积为(0.08±0.02)cm2,血流加速度为(1018.40±287.28)cm/s2,加速期流速积分为(3.21±1.17)cm,牛顿射血力为(319.57±228.93)dynes.左侧胫后动脉的血管内径为(0.21±0.03)mm,血管截面积为(0.03±0.01)cm2,血流加速度为(658.13±173.94)cm/s2,加速期流速积分为(2.28±1.15)cm,牛顿射血力为(68.11±69.34)dynes.结论 通过检测人体多处外周动脉牛顿射血力可以分析从心脏到外周血管轴向力的分布,分析人体动脉长度、血管内径、血管弹性变化及动能势能转换对牛顿射血力传导的影响,为该参数的临床应用提供科学依据.

Analysis of Newton's ejection force of carotid artery,brachial artery and posterior tibial artery in healthy subjects

Objective To explore the significance of changes of Newton's ejection force in multiple peripheral arteries by detecting Newton's ejection force of carotid artery,brachial artery and posterior tibial artery of healthy subjects with Doppler ultrasonography.Methods Thirty cases of healthy subjects were enrolled.The Doppler ultrasonic probe was respectively placed on the initial segment of left carotid artery,the left brachial artery and the left posterior tibial artery of the subjects.The systole vessel diame...