小脑幕裂孔疝又称小脑幕切迹疝，颞叶钩回疝。常由幕上病变引起，是病灶侧的颞叶钩回部分的脑组织被挤入小脑幕裂孔内，挤压中脑脑池，从而使脑脊液循环通路受阻，进一步加重颅内压增高，形成恶性循环。与枕骨大孔疝同属常见脑疝。是颅内压增高的严重后果。
并探讨小脑幕裂孔疝与幕上占病变部位，大小的关系及临床意义。
The relationship between transtentorial hernia and the size and the area of supratentorial space occupying lesion was also discussed.
目的：探讨重型颅脑损伤小脑幕裂孔疝手术救治的预后的影响因素。
Objective: to discuss the prognosis of involved factors in treatment of severe craniocerebral injury complicated with tentorium cerebelli hiatus hernia by surgery.
方法：对急诊手术救治的80例重型颅脑损伤小脑幕裂孔疝的病死率进行统计学分析。
Methods: 80 emergency cases of severe craniocerebral injury complicated with tentorium cerebelli hiatus hernia were included in this study for statistical analysis on fatality rate.
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