Mair I W, Fjermedal O, Laukli E
Department of Otorhinolaryngology, University of Tromsø, Norway.
Ann Otol Rhinol Laryngol. 1989 Oct;98(10):767-71. doi: 10.1177/000348948909801003.
A comparison has been made of air conduction threshold changes up to 1 year after myringotomy, aspiration of middle ear fluid, and insertion of ventilation tubes in ten patients with bilateral and 12 with unilateral secretory otitis media (SOM). Pure tone air conduction thresholds have been analyzed in three frequency groups: low frequency (LF; 0.25 0.5, and 1 kHz), high frequency (HF; 2, 4, and 8 kHz), and extra-high frequency (EHF; 10, 12, 14 and 16 kHz). In the LF and HF ranges, significant improvement came during the first 24 hours after intubation, while in the EHF range, threshold lowering occurred gradually over the following 2 months. Possible explanations for these findings are discussed.
对10例双侧分泌性中耳炎（SOM）患者和12例单侧分泌性中耳炎患者进行鼓膜切开术、中耳积液抽吸术及通气管插入术后长达1年的气导阈值变化比较。对三个频率组的纯音气导阈值进行了分析：低频（LF；0.25、0.5和1kHz）、高频（HF；2、4和8kHz）和超高频（EHF；10、12、14和16kHz）。在低频和高频范围内，插管后24小时内有显著改善，而在超高频范围内，阈值在接下来的2个月内逐渐降低。讨论了这些发现的可能解释。
