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调查对象为315名小学生,男174名,女141名。询问有关耳聋病史及燃放鞭炮史,作耳鼻喉科检查和听力测试。发现听觉障碍共32例,患病率为10.2％。其中声损伤23例43耳,占听觉障碍的71.9％。男20例,女3例,男:女=6.7:1。年龄分布无特殊规律。本组声损伤病例考虑由鞭炮引起的诊断依据:①患者均有典型的高频“V”型下降曲线。②全部有放鞭炮史,其中69.6％放炮数量多,近3年内每年放大小炮在200支以上,其中声级强度较大的在20个以上。③
The subjects were 315 primary school students, 174 males and 141 females. Inquire about the history of deafness and the history of fireworks for ENT examination and hearing test. A total of 32 cases of hearing impairment were found, with a prevalence of 10.2%. Among them, 23 cases were acoustic injury, 43 ears, accounting for 71.9% of hearing impairment. 20 males and 3 females, male: female = 6.7: 1. No special rules for age distribution. This group of cases of acoustic damage caused by firecrackers to consider the diagnosis: ① patients have a typical high-frequency “V” -type decline curve. ② All have a history of firecrackers, of which 69.6% blasting a large number of more than three years a year to enlarge the small cannon in more than 200, of which the sound level greater intensity of 20 or more. ③