Walsh R M, Pracy J P, Harding L, Bowdler D A
Department of Otolaryngology, Lewisham Hospital, London, UK.
J Laryngol Otol. 1995 Sep;109(9):817-20. doi: 10.1017/s002221510013141x.
Retraction pockets of the pars tensa in children can result in erosion of the ossicles leading to hearing loss and eventually cholesteatoma formation. Several different types of treatment for the more severe grades of retraction pocket have been described. The aim of this pilot study was to assess the outcome following simple excision and ventilation tube insertion of grade II, III and IV retraction pockets of the pars tensa. The eardrums were graded according to Sadé's classification (1979). There were seven grade II and four grade III retractions. Ten eardrums healed completely in a mean time of 3.6 months (mean follow-up 16 months) and there was one residual perforation. Two retractions recurred and both of these were only grade I. Clinically, an improvement in hearing was reported in seven children (eight ears) and the average air conduction threshold gain for these patients was 16 dB. A larger prospective study is currently underway.
儿童紧张部的内陷袋可导致听小骨侵蚀，进而导致听力损失并最终形成胆脂瘤。对于更严重程度的内陷袋，已经描述了几种不同的治疗方法。本初步研究的目的是评估对紧张部II级、III级和IV级内陷袋进行简单切除并插入通气管后的效果。鼓膜根据萨德（1979年）分类法进行分级。有7个II级和4个III级内陷。10个鼓膜平均在3.6个月内完全愈合（平均随访16个月），有1个残余穿孔。2个内陷复发，且均仅为I级。临床上，7名儿童（8只耳）报告听力有改善，这些患者的平均气导阈值增益为16dB。目前正在进行一项更大规模的前瞻性研究。
