Kroeze P F, Heeres J G, Heethaar R M, Hoogendam I J
Department of Surgery Ziekenzorg-Hospital, Enschede, The Netherlands.
Neth J Surg. 1987 Dec;39(6):189-93.
Apart from metabolic risk factors haemodynamic disturbances play a role in atherogenesis. The haemodynamic factors depend among other things on the geometry of vessels including the aortic bifurcation. The geometry of the aortic bifurcation can be expressed by the diameter of the distal abdominal aorta, the area ratio of the bifurcation and the convergence of the aorta. Data on the geometry have been reported of both post-mortem and in-vivo investigations by angiography and echography. Because of the disadvantages of angiographic and echographic measurements, the aortic bifurcation has been assessed by CT-scanning in a series of 50 patients. The mean diameter of the distal aorta measured 15.9 mm for men and 13.0 mm for women. The calculated area ratio was 0.74 for men and 0.81 for women. These data are in agreement with the angiographic measurements. A convergence was found of 30.6 percent for men and 45.4 percent for women. There is a discrepancy between these values and those reported in the literature.
除代谢风险因素外，血流动力学紊乱在动脉粥样硬化形成中起作用。血流动力学因素尤其取决于血管的几何形状，包括主动脉分叉处。主动脉分叉的几何形状可以通过腹主动脉远端直径、分叉面积比和主动脉汇合度来表示。关于几何形状的数据已在尸检以及通过血管造影和超声检查的体内研究中报告过。由于血管造影和超声测量的缺点，对50例患者进行了CT扫描以评估主动脉分叉。男性腹主动脉远端的平均直径为15.9毫米，女性为13.0毫米。计算得出的面积比男性为0.74，女性为0.81。这些数据与血管造影测量结果一致。发现男性的汇合度为30.6%，女性为45.4%。这些值与文献中报道的值存在差异。
