Format

Send to

Choose Destination
Paediatr Perinat Epidemiol. 2015 Jul;29(4):261-70. doi: 10.1111/ppe.12196. Epub 2015 Jun 5.

Are Meteorological Conditions within the First Trimester of Pregnancy Associated with the Risk of Severe Pre-Eclampsia?

Author information

1
UPRES EA 2506 (Santé-Environnement Vieillissement), UFR Sciences de la Santé Paris Île-de-France Ouest, Université Versailles St-Quentin-en-Yvelines, Boulogne-Billancourt, France.
2
Département Gynécologie-Obstétrique, Hôpital Poissy-Saint-Germain, Poissy, France.
3
Réseau Périnatal de l'Agence Régionale de Santé Île-de-France (Périnat-ARS-IDF), Paris, France.
4
Unité de Recherche Clinique Hôpital Universitaire Paris Île-de-France Ouest, Boulogne-Billancourt, France.

Abstract

BACKGROUND:

Severe pre-eclampsia (SPE) is the second cause of maternal death in developed countries. The literature suggests different risk factors for early- and late-onset pre-eclampsia. SPE is usually related to the early-onset type. Pre-eclampsia rate exhibits seasonal variation. However, the weather-SPE association is still unknown. We examined the associations between maternal exposure to meteorological parameters after conception and SPE.

METHODS:

From 2008 to 2011, all deliveries of women living in the Yvelines area, France, have been prospectively registered. Meteorological measurements from weather stations scattered inside Yvelines were averaged on two exposure windows: early-pregnancy (30 days after conception) and first-trimester (90 days after conception). The relationship between SPE and season of conception was also examined. Hierarchical complementary log-log regression models were used to estimate the weather-SPE association.

RESULTS:

SPE was diagnosed in 526 (0.8%) out of 63,633 singleton pregnancies. Increasing temperature or sunshine across both windows was associated with increased SPE risk. Early-pregnancy minimum temperature showed the strongest effect with adjusted odds ratio (OR) per 1 degree Celsius: 1.03 [95% confidence interval (CI) 1.01, 1.04]. The risk of SPE was higher when conception was in summer as compared to winter (OR 1.53, 95% CI 1.27, 1.85). Effect estimates showed only small variations in sensitivity analyses.

CONCLUSIONS:

Our findings of a weather impact during early pregnancy on SPE may provide a new clue for understanding the causes of pre-eclampsia. Further investigation into the biologic mechanisms for this finding is required.

KEYWORDS:

environment; meteorological; pre-eclampsia; pregnancy; weather

PMID:
26053449
DOI:
10.1111/ppe.12196
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center