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Oct 14, 2018

7th Congress of the European Academy of Paediatric Societies

01 - INFLUENCE OF ILLUMINATION TECHNIQUE IN PATIENT ROOMS ON NOCTURNAL MELATONIN PRODUCTION IN PREGNANT WOMEN DURING HOSPITALIZATION: A RANDOMIZED PROSPECTIVE PILOT STUDY

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biodynamic lighting

melatonin

pregnancy

Abstract

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Abstract

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biodynamic lighting

melatonin

pregnancy

Abstract

Background and aims: Melatonin modulates a variety of neural, endocrine, and immune functions, including synchronizing and antioxidant properties and has an important role during pregnancy. The intensity and wavelength of daylight influences the nocturnal melatonin production. Aim of this study was to evaluate the influence of illumination technique in patient rooms on melatonin production in pregnant women with reduced mobility during hospitalization. Methods: Patient beds were lit between 7:30 and 21:30 by Biodynamic Light (Zera BED, Derungs, Switzerland) (Biodynamic Lighting, BL). Pregnant women in the patient rooms with standard lighting served as control patients (CP). The study included 50 randomized patients (25 vs. 25). The illuminance (lux) and dose of effective circadian irradiation (Hec) were recorded every 10 seconds by light dosimeters (Lucerne University, Switzerland) attached to the patients` clothing. Results: The median illuminance in the CP group was significantly lower (p<0.05) than in the BL group at morning (07:00-12:00) and afternoon (12:00-17:00) from day 1 to 5. BL patients had a significantly higher effective circadian irradiation in the morning. The effective circadian irradiation showed only in the BL group a significant daily rhythm. The BL group had a significantly higher melatonin production on day 3 (p=0.032) and day 6 (p=0.043) than the CL group (median 18,032 ng vs. 10,800 ng on day 3 and 21,172 ng vs. 14,070 ng on day 6). Conclusions: Our study shows that the pregnant women were not exposed to any significant daily rhythm of effective circadian irradiation by conventional lighting during hospitalization. Biodynamic lighting led to a higher nocturnal melatonin production.

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© Copyright 2019 Morressier GmbH.
All rights reserved.