Archives of Gynecology and Obstetrics

, Volume 275, Issue 4, pp 249–254 | Cite as

Spontaneous delivery is related to barometric pressure

Original Article

Abstract

Background

Many studies have shown that changes in the weather affect health. In the field of obstetrics and gynecology, several events have been empirically shown to be related to the weather. Labor pain is controlled by the autonomic nervous system and various hormones, and is expected to be influenced by the weather and environmental changes. Several studies have been conducted on the relationship between delivery and barometric pressure, which shows constant changes with changes in weather, but there is no generally accepted view on this.

Methods

We conducted a retrospective study in our patients who had a spontaneous cephalic delivery in this hospital between January 1997 and December 2003, in order to determine whether low barometric pressure induces labor pains, premature rupture of the membranes, and delivery, and whether changes in barometric pressure affect delivery.

Results

There was a significant increase in the number of deliveries and rupture of the membranes at low barometric pressure (P < 0.01), although there was no significant correlation between onset of labor and barometric pressure. This tendency was noted in both women with spontaneous rupture of the fetal membranes and those with premature rupture of the membranes (P < 0.01). On days with a larger change in barometric pressure, regardless of whether it was increasing or decreasing, the number of deliveries increased and the relationship was statistically significant (P < 0.01).

Conclusions

A causal relationship was noted between the number of rupture of the fetal membranes, delivery and barometric pressure, suggesting that low barometric pressure induces rupture of the fetal membranes and delivery.

Keywords

Premature rupture of fetal membranes (PROM) Barometric pressure Spontaneous delivery 

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Osamu Akutagawa
    • 1
  • Hirotaka Nishi
    • 1
  • Keiichi Isaka
    • 1
  1. 1.Department of Obstetrics and GynecologyTokyo Medical University TokyoJapan

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