The earliest abnormal of renal blood flow occured in hypertensives included that the end diastolic velocity (V d) of interlobar artery was decreased and the acceleration time (AT) of segmental and interlobar artery was increased.

• 叶间动脉舒张期末血流速度 (Vd)的减慢、血流峰速加速时间的延长是高血压病患者最早出现的肾血流动力学异常 ;