双侧颈内静脉结扎后颈外静脉对颅内静脉回流的代偿作用

目的 观察结扎双侧颈内静脉后颈外脉对颅内静脉回流的代偿作用。 对猕猴模拟双侧根治性颈淋巴结清扫术，对其颈部血管干预处理，观察其颅内压的变化。结果 双侧颈内外静脉结扎引起颅内压明显增高，保留双侧颈外静脉可减轻颅内压波动，使颅内压恢复正常的时间明显缩短。结论颈淋巴结清扫术时保留颈外静脉，其有代偿内静脉回汉的功能，为防治根治性颈淋巴结清扫术内并发症和术后面部回流障碍提供了简便有效的方法。

Compensation of external jugular vein to the reflux of cerebral blood after bilateral ligation of the internal jugular vein

Objective To investigate the effects of conserving external jugular veins for compensating the back flow of intracranial veins.Methods The rhesus monkey was underwent bilateral radical neck dissection to simulate that performed in the human. In operation, the changes of intracranial pressure (ICP) after ligating these jugular veins was observed.Results The results indicate that ligation of the external and internal jugular veins will increase the ICP obviously, but conserving external jugular veins will reduce the increase of ICP and shorten the recovery time from increased ICP. Conclusions The conservation of the external jugular veins will compensate the back flow of intracranial veins after RND. The experiment provides a simple and effective method for the prevention of intracranial complications and preservation of the flow of facial veins.