Climate extremes and the length of gestation.
Climate extremes and the length of gestation.
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DOI：
10.1289/ehp.1003241
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发表时间：
2011-10
影响因子：
10.4
通讯作者：
Nieuwenhuijsen MJ
中科院分区：
文献类型：
--
作者：
Dadvand P;Basagaña X;Sartini C;Figueras F;Vrijheid M;de Nazelle A;Sunyer J;Nieuwenhuijsen MJ
背景资料：虽然预测未来的气候会有更多的极端高温条件，但关于这些条件对怀孕时间的影响的现有证据非常稀少，而且不确定。目的：我们调查了产妇短期暴露于极端环境热对妊娠时间的影响。方法：本研究基于2001-2005年期间在巴塞罗那一家主要大学医院出生的队列。根据1天暴露于异常高的热湿指数，应用了三个极端高温条件指标。每一位母亲都被分配了最接近母亲居住地邮政编码的气象站所做的测量。一个两阶段的分析，以量化的变化后，孕妇暴露于极端高温条件下调整了一系列的协变量的怀孕长度。重复第二步，延迟0（交货日期）至6天。结果：我们在分析中纳入了7，585名孕妇的数据。我们估计，在分娩前一天出现异常高的热湿指数后，分娩时平均胎龄减少5天。结论：极端高温与第二天分娩的儿童的平均胎龄减少有关，这表明这种暴露对孕妇的直接影响。需要进一步的研究来证实我们在不同环境中的发现。
Background: Although future climate is predicted to have more extreme heat conditions, the available evidence on the impact of these conditions on pregnancy length is very scarce and inconclusive. Objectives: We investigated the impact of maternal short-term exposure to extreme ambient heat on the length of pregnancy. Methods: This study was based on a cohort of births that occurred in a major university hospital in Barcelona during 2001–2005. Three indicators of extreme heat conditions based on 1-day exposure to an unusually high heat–humidity index were applied. Each mother was assigned the measures made by the meteorological station closest to maternal residential postcodes. A two-stage analysis was developed to quantify the change in pregnancy length after maternal exposure to extreme heat conditions adjusted for a range of covariates. The second step was repeated for lags 0 (delivery date) to 6 days. Results: We included data from 7,585 pregnant women in our analysis. We estimated a 5-day reduction in average gestational age at delivery after an unusually high heat–humidity index on the day before delivery. Conclusion: Extreme heat was associated with a reduction in the average gestational age of children delivered the next day, suggesting an immediate effect of this exposure on pregnant women. Further studies are required to confirm our findings in different settings.
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影响因子：
1.7
作者：
Fanshawe, T. R.;Diggle, P. J.;Pless-Mulloli, T.
通讯作者：
Pless-Mulloli, T.
影响因子：
2.8
作者：
BAKER, PT
通讯作者：
BAKER, PT
影响因子：
9.8
作者：
Hnat, MD;Meadows, JW;Myatt, L
通讯作者：
Myatt, L
影响因子：
2.8
作者：
De Rensis, F;Scaramuzzi, RJ
通讯作者：
Scaramuzzi, RJ
DOI：
10.1016/j.ejogrb.2006.12.015
发表时间：
2008-01-01
影响因子：
2.6
作者：
Figueras, F.;Meler, E.;Gardosi, J.
通讯作者：
Gardosi, J.