Becker F
J Mal Vasc. 1982;7(3):229-31.
Together with others, the author notes that the common carotid resistance index defined by Planiol and Pourcelot has no significant value in assessing the degree of a possible distal stenosis affecting the internal carotid. Using two cases similar in terms of anatomical lesions (the intracranial internal carotid being considered to be healthy), the author suggests the classification of two types of tight stenosis of the origin of the internal carotid according to whether the Planiol and Pourcelot index is raised or abnormally normal or even low:--tight stenosis of the origin of the internal carotid situated on a functional carotid system, with normal index of resistance for the common carotid;--tight stenosis of the origin of the internal carotid situated on a carotid system in the process of exclusion, with high index of resistance for the common carotid. The author feels that the possibilities of adaptation of the microcirculation and possible collateral circulations may underly these findings.
作者与其他人一起指出，普拉尼奥尔和普尔塞洛定义的颈总动脉阻力指数在评估可能影响颈内动脉的远端狭窄程度方面没有显著价值。作者通过两个解剖病变相似的病例（颅内颈内动脉被认为是健康的），根据普拉尼奥尔和普尔塞洛指数是升高、异常正常甚至降低，建议将颈内动脉起始部的两种严重狭窄类型进行分类：——位于功能性颈动脉系统上的颈内动脉起始部严重狭窄，颈总动脉阻力指数正常；——位于排除过程中的颈动脉系统上的颈内动脉起始部严重狭窄，颈总动脉阻力指数高。作者认为，微循环的适应可能性和可能的侧支循环可能是这些发现的基础。
