Tos M, Poulsen G
Arch Otolaryngol. 1976 Nov;102(11):672-5. doi: 10.1001/archotol.1976.00780160068006.
In 108 children (184 ears) with chronic secretory otitis treated with grommets, the condition at one-to-five years follow-up was compared with that at five-to-eight years follow-up. At the latter time, hearing was extremely good, 97.5% of the ears having a speech reception threshold (SRT) of 20 dB or less. However, only 67% of patients could be classified as cured by normal tympanometry. The remaining ears showed a negative middle-ear pressure of 100 to 300 mm H2O (25%), recurrent accumulation of secretion (1.6%), adhesive otitis (3.3%), perforation (1.7%), or cholesteatoma (1%). The eardrum was normal in 44% of patients, while in 25% it was diffusely atrophic, lax, or retracted.
在108例（184耳）接受鼓膜置管治疗的慢性分泌性中耳炎患儿中，对其1至5年随访时的病情与5至8年随访时的病情进行了比较。在5至8年随访时，听力非常好，97.5%的耳言语接受阈（SRT）为20dB或更低。然而，通过正常鼓室图检查，只有67%的患者可被归类为治愈。其余的耳表现为中耳负压100至300mm H2O（25%）、分泌物反复积聚（1.6%）、粘连性中耳炎（3.3%）、穿孔（1.7%）或胆脂瘤（1%）。44%的患者鼓膜正常，而25%的患者鼓膜弥漫性萎缩、松弛或内陷。
