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目的 分析比较 19例锁骨下动脉盗血患者锁骨下动脉、椎动脉和桡动脉间血流速关系。方法 用经颅多普勒超声诊断仪检测其血流速 ,并进行比较。结果 患侧反向椎动脉血流与桡动脉血流有显著相关性 (P<0 .0 5 ) ;锁骨下动脉与反向椎动脉及桡动脉血流速间无相关性 (P>0 .0 5 )。结论 锁骨下动脉盗血患者桡动脉血流速取决于侧支循环建立的完善与否。当侧支代偿好时桡动脉血流可完全正常 ;反之可能会诱发脑缺血的临床症状
Objective To analyze and compare the blood flow velocity between subclavian artery, vertebral artery and radial artery in 19 patients with subclavian artery steal. Methods Transcranial Doppler echocardiography was used to detect the blood flow velocity and compared. Results There was a significant correlation between contralateral vertebral artery blood flow and radial artery blood flow (P <0.05). There was no correlation between subclavian artery and contralateral vertebral artery and radial artery blood flow velocity (P> 0.05). 0 5). Conclusion The velocity of radial artery blood flow in subclavian artery steal patients depends on the establishment of collateral circulation. Radial artery blood flow may be completely normal when the collateral is compensated; conversely it may induce clinical symptoms of cerebral ischemia