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骨大孔疝名词解释是什么

更新时间: 2020-08-15 00:00:00     

骨大孔疝:别名小脑扁桃体疝,由于颅内压增高使小脑扁桃体经枕骨大孔疝入到颈椎管内,称为枕骨大孔疝。枕骨大孔疝有二种:一是急性枕骨大孔疝,二是慢性枕骨大孔疝。

慢性者长期颅内压增高或颅后窝占位病都可导致枕骨大孔疝,除有枕下疼痛、颈项强直、末组脑神经功能障碍外,病人意识清楚,一般状态良好;急性者多为突然发生,或在慢性疝出的基础上附加诱因,如咳嗽、腰穿或排便用力,以致疝出的程度加重。

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