Bazylev V V, Rosseĭkin E V, Mikuliak A I
Angiol Sosud Khir. 2013;19(2):41-6.
The use of the both internal thoracic arteries while forming a composite bypass graft has been suggested as a method making it possible to carry out total myocardial revascularization. However, controversial still remain the problem of the distribution of blood in these bypass grafts, as well as that concerning T-grafts' capability of providing the sufficient blood inflow to the basin of the coronary arteries being bypassed. The method of ultrasonic Doppler flowmetry was used to perform the intraoperative assessment of 59 composite bypass grafts along such parameters as the pulsatility index (PI), mean volume blood flow velocity (Qmean), and percentage of diastolic volumetric filling (DF). The obtained findings were statistically processed making it possible to obtain the average parameters of blood flow for the composite bypass grafts and their branches. A dependence was established between blood flow distribution in the composite conduit and the degree of the lesion of the artery being bypassed.
有人提出，在构建复合旁路移植物时使用双侧胸廓内动脉是一种实现完全心肌血运重建的方法。然而，这些旁路移植物中的血液分布问题，以及关于T形移植物为被旁路的冠状动脉供血区域提供足够血流的能力问题，仍然存在争议。采用超声多普勒血流仪方法，对59个复合旁路移植物的搏动指数（PI）、平均容积血流速度（Qmean）和舒张期容积充盈百分比（DF）等参数进行术中评估。对所得结果进行统计学处理，从而得出复合旁路移植物及其分支的血流平均参数。确定了复合管道内的血流分布与被旁路动脉的病变程度之间的相关性。
