Gee W, Kaupp H A, McDonald K M, Goodreau J J, Lerner S M
Arch Surg. 1983 Aug;118(8):908-12. doi: 10.1001/archsurg.1983.01390080016005.
Satisfactory calibrated BP tracings were obtained during 385 (85%) of 455 carotid endarterectomies. The pressures were measured from the distal common carotid arteries while the external carotid arteries were clamp occluded. Continuous recordings were made with and without proximal common carotid clamp occlusion. The two systolic pressures resulting in each patient were plotted as a single point on a graph, with the direct carotid systolic pressure on the abscissa and the back carotid systolic pressure on the ordinate. Formulae of the mean values in 101 of the 385 procedures, in which the opposite carotid systems contained severe stenoses or total occlusions, and the other 284 procedures, in which the opposite carotid systems had no notable lesions, demonstrate that the collateral hemispheric systolic pressure depends on the status of the opposite carotid artery and on the central BP. We derived formulae for these two groups of patients to demarcate the lowest collateral hemispheric systolic pressure adequate for hemispheric integrity during and following prolonged operative carotid occlusion or following permanent interruption of carotid blood flow as a result of thrombosis, ligation, or resection without graft replacement.
在455例颈动脉内膜切除术中有385例（85%）获得了满意的校准血压记录。血压是在颈外动脉夹闭时从颈总动脉远端测量的。在近端颈总动脉夹闭和未夹闭的情况下均进行连续记录。将每位患者获得的两个收缩压作为一个点绘制在图表上，横坐标为直接颈动脉收缩压，纵坐标为后颈动脉收缩压。在385例手术中的101例中，对侧颈动脉系统存在严重狭窄或完全闭塞，在另外284例手术中，对侧颈动脉系统无明显病变，这两组手术的平均值公式表明，侧支半球收缩压取决于对侧颈动脉的状况和中心血压。我们为这两组患者推导了公式，以划定在长时间手术性颈动脉闭塞期间及之后，或由于血栓形成、结扎或切除且未进行移植物置换导致颈动脉血流永久性中断时，维持半球完整性所需的最低侧支半球收缩压。
