Association between ambient temperature and hypertensive disorders in pregnancy in China

Tao Xiong, Peiran Chen, Yi Mu, Xiaohong Li, Baofeng Di, Jierui Li, Yi Qu, Jun Tang, Juan Liang () and Dezhi Mu ()
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Tao Xiong: Sichuan University
Peiran Chen: Sichuan University
Yi Mu: Sichuan University
Xiaohong Li: Sichuan University
Baofeng Di: Sichuan University-The Hongkong Polytechnic University
Jierui Li: Sichuan University-The Hongkong Polytechnic University
Yi Qu: Sichuan University
Jun Tang: Sichuan University
Juan Liang: Sichuan University
Dezhi Mu: Sichuan University

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Hypertensive disorders in pregnancy (HDPs) are leading perinatal diseases. Using a national cohort of 2,043,182 pregnant women in China, we evaluated the association between ambient temperatures and HDP subgroups, including preeclampsia or eclampsia, gestational hypertension, and superimposed preeclampsia. Under extreme temperatures, very cold exposure during preconception (12 weeks) increases odds of preeclampsia or eclampsia and gestational hypertension. Compared to preconception, in the first half of pregnancy, the impact of temperature on preeclampsia or eclampsia and gestational hypertension is opposite. Cold exposure decreases the odds, whereas hot exposure increases the odds. Under average temperatures, a temperature increase during preconception decreases the risk of preeclampsia or eclampsia and gestational hypertension. However, in the first half of pregnancy, temperature is positively associated with a higher risk. No significant association is observed between temperature and superimposed preeclampsia. Here we report a close relationship exists between ambient temperature and preeclampsia or eclampsia and gestational hypertension.

Date: 2020
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DOI: 10.1038/s41467-020-16775-8

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