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作者调查了1966～1972期间,111例早产儿的听力情况。初生体重≤1500gm,成活率86％,全都用过保育箱护理,为时2～80天,平均37天。未使用正压呼吸。测听检查时的平均年龄6 1/2岁。结果发现感觉神经性聋10例,听力损失平均51dB,听力曲线呈下降型,或8000赫陡降型,无一例出现4000赫切迹,而一般认为,这是长久暴露于噪声所致耳蜗损伤的早期典型曲线。有或无感觉神经性聋的两组婴儿中,在保育箱内的平均停留天数并无差异,相反,这类婴儿出生前后常发生的一些疾病,如缺氧窒息,高胆红素血症或新生儿黄疸等,极易引起感觉神经性聋,这些疾病可致婴儿脑的室管膜下出血,或脑室出血,据报导婴儿窒息死后尸检,发现脑室出血并延及内耳。因此预防和及时处理这些疾病,是防治
The authors investigated the hearing of 111 preterm infants between 1966 and 1972. Birth weight ≤ 1500gm, 86% survival rate, all used care of incubators, for 2 to 80 days, an average of 37 days. No positive pressure breathing. The average age of audiometry 6 1/2 years old. The results showed that sensory nerve deafness in 10 cases, the average hearing loss of 51dB, the hearing curve was decreased, or 8000 Hz steep drop, and no case of 4000 Hz notch, and is generally believed that this is a long-term exposure to noise-induced cochlear damage Early typical curve. Among the two groups of infants with or without sensory deafness, there was no difference in the average number of days spent in the incubator. On the contrary, some diseases that frequently occur before and after such infants, such as hypoxemic asphyxia, hyperbilirubinemia or Neonatal jaundice, easily lead to sensory nerve deafness, these diseases can cause infantile brain subependymal hemorrhage, or ventricular hemorrhage, autopsy was reported after the baby suffocated and found intraventricular hemorrhage and delay the inner ear. Therefore, prevention and timely treatment of these diseases are prevention and control