为研究渗出性中耳炎发病率增高的原因,作者们随机挑选50例渗出性中耳炎需插管治疗而无扁桃体和腺样体病变的患儿作了观察,看是否能发现一共同病因。其中仅3例初诊时有渗出性中耳炎的症状;另2例鼓膜自发性破裂;余45例皆始于上呼吸道感染,有鼻炎和/或变态反应表现,无耳部症状,在用减充血剂、抗组织胺剂或二者 To study the reason for the increased incidence of exudative otitis media, the authors randomly selected 50 patients with exudative otitis media who needed intubation for treatment of tonsil and adenoid lesions to see if they could find a common cause. Of these, only 3 cases had exudative otitis media at the time of first visit; the other 2 cases had spontaneous rupture of the tympanic membrane; the remaining 45 cases started with upper respiratory tract infection and had rhinitis and / or allergic manifestations without ear symptoms. Agent, an anti-histamine agent, or both