Methods: A series of audiometry on 21 cases (39 ears) of explosive deafness with intact drum were performed averagely after blast 2. 2 hours, 8. 6 hours, 30. 2 hours, 4. 8 dyas, 9. 8 days and 21. 6 days.

• 方法:对21例(39耳)早期爆震性聋患者定期作听力追踪测试；测得爆震后平均2.；2h、8