McRae D, Gatland D J, Youngs R, Cook J
Department of Otolaryngology, St. Bartholomews Hospital, London, England.
J Otolaryngol. 1989 Aug;18(5):229-31.
Fifty-five children with bilateral middle ear effusions were entered into a prospective randomized double blind trial to determine whether aspiration of middle ear effusions prior to ventilation tube insertion influences ventilation tube extrusion time or the development of tympanosclerosis. Following myringotomy, aspiration of the left or right ear only was performed randomly prior to ventilation tube insertion. The tympanic membranes were inspected six-monthly to determine whether ventilation tube extrusion had occurred, and at 24 months after surgery for the presence of tympanosclerosis. Results showed no significant difference in extrusion time between aspirated and non-aspirated ears. Aspiration was found to be a factor in the development of tympanosclerosis. We conclude that routine aspiration of the middle ear effusion prior to ventilation tube insertion is associated with an increased risk of tympanosclerosis.
55名双侧中耳积液患儿参与了一项前瞻性随机双盲试验，以确定在插入通气管之前抽吸中耳积液是否会影响通气管的排出时间或鼓室硬化的发生。在鼓膜切开术后，仅在插入通气管之前随机选择抽吸左耳或右耳的积液。每六个月检查一次鼓膜，以确定通气管是否已排出，并在手术后24个月检查是否存在鼓室硬化。结果显示，抽吸组和未抽吸组的通气管排出时间无显著差异。发现抽吸是鼓室硬化发生的一个因素。我们得出结论，在插入通气管之前常规抽吸中耳积液会增加鼓室硬化的风险。
