Ojala K, Sorri M
Arch Otorhinolaryngol. 1982;234(3):253-62. doi: 10.1007/BF00464329.
The postoperative long-term hearing results, with special reference to the state and management of the tympanic mucosa at operation, in 627 ears (574 patients) after an annual clinical follow-up period of 5-14 years are presented. The ears were operated on radically due to chronic otitis media, using the obliterative radical operation technique developed by T. Palva. The air-bone gap improved from the preoperative level significantly more in ears where the tympanic mucosa had been preserved than in ears where it had been removed at operation (p less than 0.001). The improvement was also significantly better in dry ears than in ears which were moist or discharging at operation (p less than 0.05). The mean late deterioration in the air-bone gap after the first follow-up year was significant in all the groups of ears (p less than 0.05), and the mean long-term change in air-bone gap from pre- to late postoperative examination was the improvement of 3.0 dB in ears with, and a deterioration of 2.0 dB in ears without ossicular reconstruction.
本文呈现了627耳（574例患者）在经过5至14年的年度临床随访后，术后的长期听力结果，特别提及了手术时鼓膜黏膜的状态及处理情况。这些耳朵因慢性中耳炎接受了根治性手术，采用的是T.帕尔瓦研发的闭塞性根治手术技术。与手术时鼓膜黏膜已被切除的耳朵相比，鼓膜黏膜得以保留的耳朵气骨导间距从术前水平改善得更为显著（p<0.001）。干燥耳的改善情况也明显优于手术时潮湿或有分泌物的耳朵（p<0.05）。在首次随访年后，所有耳组的气骨导间距平均后期恶化情况均具有统计学意义（p<0.05），从术前到术后晚期检查，有听骨链重建的耳朵气骨导间距平均长期变化为改善3.0 dB，无听骨链重建的耳朵则恶化2.0 dB。
