Results The main cause of acute encephalocele were delayed intracranial hematomas,acute diffuse brain swelling,cerebral contusion and laceration in Sylvain tissue and ischemic anoxia.

• 结果迟发性颅内血肿、弥漫性脑肿胀、侧裂区脑挫裂伤、脑组织缺血、缺氧等是重型颅脑损伤术中急性脑膨出的主要原因。