Magaard F, Ekeström S
Scand J Thorac Cardiovasc Surg. 1975;9(3):240-9. doi: 10.3109/14017437509138645.
A peroperative study of blood flow and flow direction was performed in series of patients with occlusive disease of the subclavian artery. Particular attention was focused on the flow variations caused by arm ischaemia and postischaemic hyperaemia and on the effect of injection of a vasodilator into the distal subclavian artery. The effect on blood flow and flow direction was measured with the aid of an electromagnetic flowmeter. During arm ischaemia induced by an inflated cuff on the arm, the subclavian flow diminished, as did the vertebral artery flow when it was retrograde. If the vertebral artery flow was anterograde, it increased during arm ischaemia. The postischaemic hyperaemia caused an increase of the subclavian flow and of reversed vertebral flow. If the vertebral flow was anterograde, it diminished during the postischaemic hyperaemia. Similar findings were obtained with intra-arterial injection of a vasodilator. The large amount of blood flow passing through the vertebral artery, as well as the flow variations caused by reactive arm hyperaemia, emphasize the role of this artery as a collateral vessel to the upper limb in cases of the subclavian steal phenomenon.
对一系列锁骨下动脉闭塞性疾病患者进行了术中血流及血流方向研究。特别关注了手臂缺血及缺血后充血引起的血流变化，以及向锁骨下动脉远端注射血管扩张剂的效果。借助电磁流量计测量对血流及血流方向的影响。当手臂上的袖带充气导致手臂缺血时，锁骨下血流减少，椎动脉血流逆行时也减少。如果椎动脉血流是顺行的，则在手臂缺血期间增加。缺血后充血导致锁骨下血流及椎动脉逆流增加。如果椎动脉血流是顺行的，则在缺血后充血期间减少。动脉内注射血管扩张剂也获得了类似结果。通过椎动脉的大量血流，以及反应性手臂充血引起的血流变化，强调了在锁骨下窃血现象中该动脉作为上肢侧支血管的作用。
