Penaz J, Honzikova N, Jurak P
Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Med Biol Eng Comput. 1997 Nov;35(6):633-7. doi: 10.1007/BF02510971.
Vibration plethysmography records changes in vascular volume produced by fast vibrations of cuff pressure. From these, waveforms of dynamic vascular compliance (DVC) are obtained. A total of 46 recordings of DVC, photo-electric plethysmogram (PG), cuff pressure (CP), and indirect blood pressure (BP) are performed on two adjacent fingers (third and fourth) in 23 healthy subjects. The shape and polarity of the DVC waveform markedly depends upon CP or transmural pressure (TP) (TP = BP - CP). The correlation coefficient between DVC and PG waveforms is nearly -1 at negative mean TP, near zero at zero TP, and approaches +1 at positive TP. For CP moving between systolic and diastolic BP, the DVC waveform shows a diastolic peak, with its maximum close to the zero value of instantaneous TP. xy-diagrams of PG against TP and of DVC against TP plotted for the diastolic phase of single pulses reveal a close coincidence of the DVC peak with the maximum slope of the PG/TP curve. A similar relationship appears when slow changes in PG and the amplitude of PG pulse waves are plotted against mean TP.
振动体积描记法记录袖带压力快速振动所产生的血管容积变化。据此可获得动态血管顺应性（DVC）的波形。对23名健康受试者的相邻两个手指（第三和第四指）进行了总共46次DVC、光电体积描记图（PG）、袖带压力（CP）和间接血压（BP）记录。DVC波形的形状和极性明显取决于CP或跨壁压力（TP）（TP = BP - CP）。在平均TP为负时，DVC与PG波形之间的相关系数接近-1；TP为零时接近零；TP为正时接近+1。对于在收缩压和舒张压之间变化的CP，DVC波形显示出一个舒张期峰值，其最大值接近瞬时TP的零值。针对单个脉冲舒张期绘制的PG与TP以及DVC与TP的xy图显示，DVC峰值与PG/TP曲线的最大斜率密切吻合。当将PG的缓慢变化和PG脉搏波的幅度与平均TP绘制在一起时，也会出现类似的关系。
