Myringotomy alone, without tube placement or adenoidectomy, is ineffectie for chronic OME144,145 because the incision closes within seeral days.

• 单纯的鼓膜切开术，不放置引流管或者进行腺样体切除术，对于慢性OME没有效果，因为几天后切口就会闭合。