Tos M, Stangerup S E, Hvid G
Arch Otolaryngol. 1984 Aug;110(8):502-7. doi: 10.1001/archotol.1984.00800340014003.
Forty-one randomized, otherwise healthy children with tympanometry were observed from birth until the age of 6 years. At a total of 13 trials, tympanometry and otoscopy were performed. The tympanometric profile was correlated to the size of the mastoid air cell system, as determined by planimetric measurement of roentgenograms taken at age 6 years. There was a notable correlation between the size of the cell system and the tympanometric profile. Thus, the least affected ears with mostly normal or slightly abnormal tympanometry had considerably larger cell systems than the most affected ears with secretory otitis and tubal dysfunction. The findings support the environmental theory of pneumatization.
对41名出生至6岁的随机选取的、其他方面健康的儿童进行了鼓室导抗图检查。总共进行了13次试验，包括鼓室导抗图检查和耳镜检查。鼓室导抗图特征与乳突气房系统的大小相关，乳突气房系统大小通过对6岁时拍摄的X线片进行平面测量来确定。气房系统大小与鼓室导抗图特征之间存在显著相关性。因此，鼓室导抗图大多正常或轻度异常、受影响最小的耳朵，其气房系统比患有分泌性中耳炎和咽鼓管功能障碍、受影响最大的耳朵要大得多。这些发现支持了气化的环境理论。
