快速气压变化及呼吸纯氧对耳气压功能和听力的影响

发布时间：2018-02-03 22:50

本文关键词： 耳气压功能听力低压舱吸纯氧　出处：《科学技术与工程》2014年20期 　论文类型：期刊论文

【摘要】：观察了经快速气压变化、呼吸纯氧后耳气压功能和听力随时间变化的情况。被试者提前舱内吸氧并利用低压舱营造快速气压变化环境,对其进行低压舱耳气压功能检查试验,试验前后行主观感觉记录、耳镜检查、声抗导检查(包括鼓室导抗图、声反射阈及咽鼓管功能)和纯音测听。对不同试验时间点的声导抗指标和纯音听阈情况进行统计学分析。综合各项检测指标分析各时间点耳气压功能和听阈变化情况,总体看来出舱和出舱3 h各项指标偏离基础值但无显著差异,至出舱24 h基本恢复正常。试验中被试呼吸纯氧后经历快速气压变化对耳气压功能和听力的影响在24 h后基本回复。
[Abstract]:The changes of ear pressure function and hearing ability with time after rapid air pressure change were observed. The subjects took oxygen in advance chamber and created a rapid pressure change environment by using low pressure chamber. The pressure function of low-pressure chamber was tested. Subjective sensory records, ear endoscopy and acoustic impedance examination (including tympanogram) were performed before and after the test. Sound reflection threshold and eustachian tube function). And pure tone audiometry. The acoustic impedance index and pure tone hearing threshold at different test time points were analyzed statistically. The changes of ear pressure function and hearing threshold at each time point were analyzed synthetically. As a whole, there was no significant difference between the outboard and the outboard for 3 h in deviating from the base value. The effects of rapid changes of air pressure on ear pressure function and hearing ability were basically restored after 24 hours of exposure to pure oxygen.
【作者单位】：空军航空医学研究所;
【基金】：总后勤部重大专项(AKJ11J002)资助
【分类号】：R764.2
【正文快照】： 当外界环境气压急剧变化而中耳压力不能及时平衡时,会发生不同程度的耳痛、耳鸣或听力减退,严重者鼓膜破裂出血,引起剧烈的耳痛并伴有头痛及眩晕,这种损伤性的病理变化被称为耳气压伤。该现象对飞行安全造成严重威胁,同时在潜水员和接受高压氧治疗的病患中也有发生[1,2]。耳气

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