Lacolley P J, Pannier B M, Levy B I, Safar M E
Department of Internal Medicine, Lariboisière Hospital, Paris, France.
Eur Heart J. 1990 Dec;11 Suppl I:62-6. doi: 10.1093/eurheartj/11.suppl_i.62.
Using a pulsed Doppler velocimeter with spectral analysis, it is possible to measure instantaneous ascending aortic blood velocity by the suprasternal approach. Cardiac output, stroke volume and maximal acceleration are evaluated from the aortic velocity curve. Maximal aortic acceleration is increased in patients with borderline hypertension by comparison with normal subjects and patients with sustained essential hypertension of the same age. Stroke distance is calculated as the ratio between stroke volume and the cross-sectional area of aortic valve measured by echocardiography. Stroke distance is significantly decreased in patients with sustained hypertension, suggesting that the distance covered by a column of blood passing through the aortic root during one cardiac cycle is smaller in patients with hypertension than in normal subjects.
使用带有频谱分析的脉冲多普勒测速仪，通过胸骨上入路可以测量升主动脉的瞬时血流速度。从主动脉速度曲线评估心输出量、每搏输出量和最大加速度。与正常受试者和同年龄的持续性原发性高血压患者相比，临界高血压患者的最大主动脉加速度增加。每搏行程通过每搏输出量与经超声心动图测量的主动脉瓣横截面积之比来计算。持续性高血压患者的每搏行程显著降低，这表明高血压患者在一个心动周期中通过主动脉根部的一列血液所覆盖的距离比正常受试者小。
