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Master Thesis

Influence de la lumière sur le processus de parturition humaine Revue de la littérature

Abstract : Introduction: In the age of electricity and medicalised childbirth, neon lighting and scialytic lamps are commonly used in delivery rooms. The effects of light on the process of parturition - via an inhibition of melatonin release - are well known in animals, but have not been widely studied in humans. The objective of our study was to identify physiological mechanisms through which light can influence human parturition. Materials and methods: We performed a literature review after exploring Medline, Cochrane Library, EM-Premium, BDSP, and SIGLE. We used the keywords "light", "melatonin", "parturition", "uterus", "oxytocin", "labor'', ''obstetrics", "delivery". We selected human studies published until 2015, in English and French. Data were analysed by using a grid adapted from Critical Appraisal Worksheet. Results: Thanks to these selected articles, it was possible to evaluate the comparative importance of light wave length and intensity, exposure duration, previous level of light intensity (season), and exposition time on the inhibition of melatonin release. Furthermore, uterine melatonin receptors have been identified and an increased blood concentration of melatonin during labour and synergic effects between melatonin and oxytocin have been demonstrated. Very few studies reported a direct effect of light on human parturition. Discussion: Since the inhibitory effect of light on melatonin release is well established and the positive role of melatonin on the human parturition process is highly probable it is tempting to speculate that light can hinder the birth process. To test this hypothesis, it would be interesting to determine whether, depending on the exposure to light, melatonin levels in saliva are inversely correlated with the duration of labour. Conclusion: Although the inhibitory effects of light on human parturition have not been definitively established, scientific data support this hypothesis. Thereby, as a precautionary measure, it appears reasonable to reduce the sources of light in delivery rooms.
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Submitted on : Thursday, December 8, 2016 - 12:28:56 PM
Last modification on : Monday, July 6, 2020 - 4:04:37 PM
Long-term archiving on: : Thursday, March 23, 2017 - 7:12:04 AM


  • HAL Id : dumas-01412390, version 1


Cornélia Gwinner. Influence de la lumière sur le processus de parturition humaine Revue de la littérature. Gynécologie et obstétrique. 2016. ⟨dumas-01412390⟩



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