脑桥静脉形态的实验研究
Experimental study of the morphology of cerebral bridging vein.
作者信息
Pang Q, Wang C, Hu Y, Xu G, Zhang L, Hao X, Zhang Q, Gregerson H
机构信息
Department of Neurosurgery, Second Affiliated Hospital of Shandong Medical University, Jinan 250033.
出版信息
Chin Med Sci J. 2001 Mar;16(1):19-22.
OBJECTIVE
To investigate the morphological properties of pig cerebral bridging vein.
METHODS
The morphology and fibre arrangement of 15 cerebral bridging veins obtained from 7 Danish Yorkshire landrace pigs were observed.
RESULTS
There was a narrow region at the junction of the cerebral bridging veins and superior sagittal sinus termed "outflow cuff segment". The diameter and length of outflow cuff segment were much smaller and the thickness was higher than those of the cerebral bridging veins ( P < 0.01), and circumferential collagen fibres were most dense in the outflow cuff segment. The opening angle of the outflow cuff segment and the cerebral bridging veins were 115 +/- 4 degrees and 120 +/- 4 degrees ( P > 0.05).
CONCLUSIONS
There were differences in fibre arrangement and morphological properties between the outflow cuff segment and the cerebral bridging vein, just like a resistance valve, the outflow cuff segment may play an important role in stabilizing cerebral venous outflow and regulating intracranial pressure.
目的
研究猪脑桥静脉的形态学特性。
方法
观察从7只丹麦约克夏大白猪获取的15条脑桥静脉的形态及纤维排列。
结果
脑桥静脉与上矢状窦交界处存在一个狭窄区域，称为“流出袖带段”。流出袖带段的直径和长度比脑桥静脉小得多，厚度更高（P<0.01），且流出袖带段的环形胶原纤维最密集。流出袖带段与脑桥静脉的开口角度分别为115±4度和120±4度（P>0.05）。
结论
流出袖带段与脑桥静脉在纤维排列和形态学特性上存在差异，流出袖带段可能如同一个阻力瓣膜，在稳定脑静脉流出和调节颅内压方面发挥重要作用。
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