婴儿时期暴露于矿山火灾烟雾的儿童的肺功能变化
Emily J Hemstock1,2, Rachel E Foong3,4, Graham L Hall3,4
1Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
概括
煤矿火灾造成的急性高强度空气污染并没有长期影响儿童的肺功能. 然而,暴露与儿童发育期间肺硬度的暂时改善有关.
科学领域:
- 环境健康 环境健康
- 儿科肺病学 儿科肺病学
- 流行病学 流行病学
背景情况:
- 长期暴露于空气污染与儿童肺功能减弱有关.
- 对急性,高强度空气污染对肺生长的影响的研究是有限的.
研究的目的:
- 调查早期暴露于急性,高强度空气污染和肺生长轨迹之间的关联.
- 为了确定煤矿火灾颗粒物对儿童肺部功能的长期影响.
主要方法:
- 在黑泽伍德煤矿火灾附近对儿童进行前性队列研究.
- 通过呼吸道振荡计 (R5,X5,AX) 测量肺功能.
- 分析包括线性回归和混合效应模型,用于暴露-肺功能关系.
主要成果:
- 没有发现矿山火灾颗粒物 (PM2.5) 与7岁的肺功能之间存在关联.
- 在3至7岁之间观察到5Hz (X5) 的反应率和反应率曲线 (AX) 下面面积的适度改善,与PM2.5暴露相关.
- 同样的趋势在最大PM2.5暴露时也被发现.
结论:
- 从煤矿火灾中暴露于PM2.5的早期生活与肺硬度的适度改善有关.
- 这种改善表明,在3岁时出现了最初的肺功能缺陷,在7岁时就消失了.
- 急性高强度空气污染并没有对肺功能轨迹产生持久的负面影响.
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