相关实验视频
Updated: May 28, 2025

Conducting Respiratory Oscillometry in an Outpatient Setting
Published on: April 8, 2022
语音电话和患者特征对呼吸道气溶排放的影响
Anna Tuhkuri Matvejeff1, Sampo Saari2, Lotta Maria Oksanen1
1Faculty of Medicine, University of Helsinki, P.O. Box 63, FI-00014 Helsinki, Finland; Department of Otorhinolaryngology and Phoniatrics - Head and Neck Surgery, Helsinki University Hospital, P.O. Box 263, FI-00029 Helsinki, Finland.
呼吸活动,如说出元音[a],[o],[r],呼吸和咳,会产生空气中的颗粒. 粒子排放因语音不同而有所变化,并受声压水平 (SPL) 的影响,但并非始终由个体特征决定.
科学领域:
- 气溶科学是一门气溶科学.
- 呼吸系统生理学 呼吸系统生理学
- 声学 声学 在声学方面
背景情况:
- 了解呼吸道颗粒排放对于控制空气传播疾病传播至关重要.
- 语音,呼吸和咳是产生呼吸气溶的关键活动.
研究的目的:
- 研究如何产生不同的语音声音 ([a],[o],[r]),呼吸和咳影响呼吸道颗粒排放.
- 确定个体特征在这些活动期间对粒子产生的影响.
主要方法:
- 实验研究涉及41名健康参与者.
- 测量颗粒大小分布 (0.00410微米) 和声压水平 (SPL).
- 使用二氧化碳度计算排气流量.
主要成果:
- 音符[o]产生了比[a]更多的粒子;音符[r]产生了更多的小粒子.
- 较高的SPL与增加的粒子生成相关,但不能完全解释差异.
- 年龄影响呼吸颗粒排放;呼气流量和BMI影响咳颗粒排放.
结论:
- 在发声过程中粒子排放因声音而异,独立于SPL.
- [r]声调的小颗粒表明卫星形成;[o]声调的较高发射可能与口腔开口有关.
- 年龄,性别,BMI和峰值呼气流 (PEF) 等个人因素在所有活动中都不是一致的预测因素.
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