出生后的第一个呼吸 - - 在健康的婴儿中早期的肺功能
Vincent D Gaertner1,2,3, Leandra Ramin-Wright1, Andreas D Waldmann4
1Newborn Research, Department of Neonatology, University Hospital and University of Zürich, Zürich, Switzerland.
American journal of respiratory and critical care medicine
|February 25, 2026
概括
生命的第一个呼吸迅速建立婴儿的功能残留能力. 最初的呼吸显示出大量的潮体积和不均的肺透气,随着时间的推移,这种情况会改善.
科学领域:
- 新生儿生理学 新生儿生理学
- 呼吸系统的机械学
- 婴儿肺部的发育 婴儿肺部的发育
背景情况:
- 人类婴儿出生后肺部的通风过程尚未完全理解.
- 在初始呼吸期间描述体积变化对于理解新生儿呼吸适应至关重要.
研究的目的:
- 在健康的新生儿中,在生命的第一个呼吸期间,描述肺空气和体积变化.
- 调查出生后的区域通风分布和肺体积动态.
主要方法:
- 一项前性观察性研究,涉及通过阴道分娩的健康婴儿.
- 电阻断层扫描 (EIT) 用于持续记录肺功能.
- 分析的关键参数包括呼吸结束肺体积 (EELV),潮体积 (VT) 和区域通风标志物 (CoV,SS,FLS,CV) 在出生后的前十次呼吸和最多十分钟.
主要成果:
- 对46名婴儿10546次呼吸的分析显示,在最初的五次呼吸中,EELV的快速增加和VT的三倍高,与后来的呼吸相比.
- 最初的呼吸 (1-2) 呈现出显著的区域不均性,右肺和左肺的顺序优先通风,随后是快速的分辨率.
- 肺周边通风在最初的10分钟内得到改善,这是功能性肺大小 (FLS) 的增加所表明的.
结论:
- 该研究可视化和量化出生后关键的第一次呼吸期间的肺生理.
- 基本上,功能残留能力是在前五次呼吸内建立起来的.
- 最初的呼吸标志着大量的潮和显著的,短暂的区域通风不均性,可能受到解剖学和位置因素的影响.
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