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作者们为研究笑气对中耳渗出液的影响,随意挑选12名4～13岁的儿童,手术日晨耳镜检查示双耳均有渗出液微象,鼓室图检查为平坦型曲线。硫喷妥钠和琥珀胆碱诱导麻醉,面罩吸氧,氧和氟烷混合维持,重复耳镜及鼓室压测量检查。左耳为研究耳,右耳为对照,左耳于手术显微镜下检查有无液体,重复测鼓室压力,右耳鼓膜切开,检查有无积液,然后于左侧鼓膜切开前,行鼓室压测定。结果:在12研究耳和12对照耳中,9例术前有积液,并于诱导后10～32分鼓膜切开时有渗液;但3例于全麻时出现平坦曲线变为有峰的曲线,耳镜检查未见积液,诱导后25～38分行左鼓
In order to study the effect of nitrous oxide on the exudate of the middle ear, we randomly selected 12 children aged 4 to 13 years old. Earmoscopy on the day of surgery revealed exudate microlevels in both ears. The tympanogram showed a flat curve . Thiopental and succinylcholine induced anesthesia, mask oxygen, mixed oxygen and halothane maintenance, repeated otoscopy and tympanometry measurements. The left ear for the study of the ear, the right ear as a control, the left ear in the surgical microscope to check whether there is liquid under repeated tympanometry, right ear tympanic membrane incision, check for fluid, and then in the left tympanic membrane incision before tympanic Pressure measurement. RESULTS: Of the 12 study ears and 12 control ears, 9 had effusion preoperatively and developed exudate 10 to 32 minutes after induction of the tympanic membrane incision; however, 3 showed a flattened curve as a peak during general anesthesia Curve, otoscopy no effusion, induced left drum after 25 to 38 points