OBJECTIVES: This study examined the association between gestation length and heat exposure during the summer months of the Chicago heat wave of 1995. METHODS: Birth data from Illinois vital records containing 11,792 singleton vaginal births were analyzed to calculate mean gestational ages. RESULTS: No evidence was found to suggest an association between shortened gestation and increased maximum apparent temperature. CONCLUSIONS: The data propose no special precautions for pregnant women exposed to short-term heat stress of the intensity evaluated in this study. However, the possible effects of chronic heat exposure on gestation cannot be ruled out.
OBJECTIVES: This study examined the association between gestation length and heat exposure during the summer months of the Chicago heat wave of 1995. METHODS: Birth data from Illinois vital records containing 11,792 singleton vaginal births were analyzed to calculate mean gestational ages. RESULTS: No evidence was found to suggest an association between shortened gestation and increased maximum apparent temperature. CONCLUSIONS: The data propose no special precautions for pregnant women exposed to short-term heat stress of the intensity evaluated in this study. However, the possible effects of chronic heat exposure on gestation cannot be ruled out.
Authors: J C Semenza; C H Rubin; K H Falter; J D Selanikio; W D Flanders; H L Howe; J L Wilhelm Journal: N Engl J Med Date: 1996-07-11 Impact factor: 91.245
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