Kimura K, Yamaguchi T, Yasaka M, Tsuchiya T
Department of Medicine, National Cardiovascular Center.
Rinsho Shinkeigaku. 1991 Sep;31(9):970-3.
To evaluate hemodynamics of the vertebral artery (VA) in subclavian steal syndrome (SSS) and subclavian steal phenomenon (SSP), blood flow velocities of the bilateral VAs were measured by duplex ultrasonography in four patients with SSS and eight patients with SSP. The reversal of flow in the VA was noted in both systolic and diastolic phases in all of the SSS group, and was recorded only in a systolic phase in all but one of the SSP group. The antegrade mean flow velocities in the VA on the unaffected side in the SSS group were significantly higher than those in the SSP group. This indicates that collateral blood flow through the VA in the SSS group is still insufficient to compensate the blood requirement of the upper extremity on the affected side. In conclusion, hemodynamics of the VA in the SSS group could be distinguished from those in the SSP group by duplex ultrasonography.
为评估锁骨下动脉窃血综合征（SSS）和锁骨下动脉窃血现象（SSP）中椎动脉（VA）的血流动力学，对4例SSS患者和8例SSP患者采用双功超声测量双侧VA的血流速度。SSS组所有患者的VA在收缩期和舒张期均出现血流逆转，而SSP组除1例患者外，所有患者仅在收缩期记录到血流逆转。SSS组未受影响侧VA的正向平均血流速度显著高于SSP组。这表明SSS组通过VA的侧支血流仍不足以补偿患侧上肢的血液需求。总之，双功超声可区分SSS组和SSP组VA的血流动力学。
