乳突气化程度与成人分泌性中耳炎的预后

The Effect of Mastoid Pneumatization for Prognostic of Secretory Otitis Media in Adults

目的探讨乳突气化情况对成人分泌性中耳炎预后的影响。方法对１２４例（１９４耳）成人分泌性中耳炎乳突气化状况摄乳突Ｓｃｈｕｌｅｒ片，用Ｄｉａｍａｎｔ法测量并计算Ｘ线上显示的乳突的几何学面积。结果１９４耳中气化良好型（面积≥６ｃｍ２）５１耳（２６．３％），１０耳（１９．６％）预后不良；气化不良型（面积＜６ｃｍ２）１４３耳（７３．７％），预后不良７２耳（５０．３％）。结论认为乳突气化不良是影响分泌性中耳炎预后不良的因素之一。

Objective To explore the potential role of mastoid pneumatization in the sequelae of secretory otitis media(SOM). Methods All cases were given X-ray examination of mastoid process in Schuller's lateral projection. The size of the air cell system was obtained by planimetry: the method was originally devised by Damant. The outline of the mastoid air cell system(MACS)was marked out on the radiograph and then transferred to graph paper where the number of mm 2 could be counted directly. Results 194 mastoids were devided into two categories: good pneumatization type with 51 ears(26.3%)(6cm 2 and above)and poor pneumatization with 143 ears(73.7%)(less than 6 cm 2). Ears with poor pneumatization developed chronic SOM in 50.3% of cases, as compared with 19.6% in cases with well-pneumatized ears. Conclusion The degree of mastoid pheumatization is associated with the prognosis of SOM.