The influence of meteorological factors on the emergence of preterm delivery and preterm premature rupture of membrane

Abstract

Objective: To evaluate the influence of changes in the atmospheric state on the incidence of preterm delivery (PTD) and preterm premature rupture of membrane (PPROM).Study Design: The hospital records of PTD and/or PPROM over the year 1999 were reviewed. The current meteorological state was described by a set of parameters and their diurnal and seasonal variations. Multivariate analysis, time series approach and Poisson regression were used.Result: PTD occurrence was correlated with humidity and maximum temperature (P<0.01), its rise preceded their sharp variations by 3 days (P<0.01). PPROM was influenced by the variations in the weather state: desert heat wave arrival (P ¼ 0.093), strong winds, overall daily differences of humidity and temperature (all with P<0.05). Conclusion:The rates of PTD and PPROM are affected by an ensemble of meteorological variables, specific for each disorder. Obstetricians should be aware of the influence of unstable weather on PTD and PPROM rates, especially in the spring and autumn.

Maternal exposure to heatwave and preterm birth inBrisbane,Australia

“…[13][14][15]22,23,[36][37][38] Our results are consistent to some extent with the findings of most previous studies, which showed that higher ambient temperature, especially extreme hot weather, might shorten the gestational age or result in preterm birth. 13,14,22,23,36,37 A recent study based on a birth cohort in Barcelona defined an extreme heat event when the heat index (HI) exceeded the 90th, 95th, and 99th percentiles of heat indices, and found a small reduction (0.2 day) in the average length of gestation when the HI on the day of delivery exceeded the 95th percentile (HI 95 30.5°C). 22 A survival analysis in Brisbane also found that exposure to high temperatures during the last gestational week was associated with an increase of the risk of preterm birth.…”

Examining Extreme Weather Effects on Birth Weight From the Individual Effect to Spatiotemporal Aggregation Effects

“…In a recent review, Strand, Barnett, and Tong (2011) listed four potential reasons for why low-birth weight and preterm births are like to be associated with changes in temperature. Supporting evidence was found in many places worldwide (Flouris et al 2009;Murray et al 2000;Strand, Barnett, and Tong 2012;Yackerson, Piura, and Sheiner 2008), but most notably in Japan, where preterm births peaked both in summer and winter with the winter peak dominant in the north, and the summer peak in the South (Matsuda and Kahyo 1990). In addition, many other related diseases, such as sudden infant death syndrome (Campbell 1994), cardiovascular disease (Barnett et al 2005), and infection disease (Fisman 2007), are all associated with geographic regions, and changes in ambient temperature, suggesting that weather affects people through different biological mechanisms in different regions and different seasons.…”

The influence of several changes in atmospheric states over semi-arid areas on the incidence of mental health disorders

“…The instability of meteorological factors, such as air streams, atmospheric pressure, temperature, humidity, concentration of air-suspended particulates, level of atmospheric ions and electric field intensity, or some of them acting together, may cause multiform disorders in the normal life of sensitive persons: a growing incidence of depression, seasonal affective disorders, rowdy crowd behavior, aggravation of chronic diseases, headache, migraine and many other symptoms (Aikman 1997;Cantor et al 2000;Doganay et al 2003;Lee et al 2006;von Mackensen et al 2005;McConville et al 2002;Morion et al 1999;Pokorny et al 1963;Stoupel et al 1995;Sulman 1982;Yackerson et al 2007;Yackerson et al 2008).…”