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目的评价彩色多普勒超声在动脉硬化性锁骨下动脉盗血综合征(SSS)诊断中的价值。方法患者25例,均经临床、数字减影造影(DSA)及磁共振血管造影(MRA)检查确诊。二维超声常规显示颈动脉、椎动脉颅外段、锁骨下动脉及无名动脉的内径及狭窄情况,多普勒超声观察病变部位的血流动力学变化。结果左侧病变17例,右侧8例。其中完全性盗血14例,部分性盗血7例,隐匿性盗血4例。结论心动周期中患侧锁骨下动脉与同侧椎动脉之间压力梯度的动态变化,决定着锁骨下动脉盗血的程度。在未合并相关大血管的其他明显病变时,锁骨下动脉盗血程度与病变部位血管狭窄程度有关。彩色多普勒超声对绝大数SSS可明确诊断。
Objective To evaluate the value of color Doppler ultrasound in the diagnosis of arteriosclerosis subclavian artery steal syndrome (SSS). Methods Twenty-five patients were diagnosed by clinical, digital subtraction angiography (DSA) and magnetic resonance angiography (MRA). Two-dimensional ultrasound routinely showed the diameter and stenosis of the carotid artery, extracranial segments of the vertebral artery, subclavian artery and innominate artery. The hemodynamic changes of the lesion were observed with Doppler ultrasound. Results The left lesion in 17 cases, the right side in 8 cases. Complete steal in 14 cases, partial steal in 7 cases, occult steal in 4 cases. Conclusion The dynamic changes of pressure gradient between the ipsilateral subclavian artery and the ipsilateral vertebral artery in the cardiac cycle determine the extent of steal of the subclavian artery. In the absence of other significant lesions associated with large blood vessels, the degree of steal of the subclavian artery and vascular lesions related to the degree of stenosis. Color Doppler ultrasound on the vast majority of SSS can be clearly diagnosed.