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Cerebral oxygenation and blood flow in term infants during postnatal transition: BabyLux project

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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  • Agnese De Carli
  • Björn Andresen
  • Martina Giovannella
  • Turgut Durduran
  • Davide Contini
  • Lorenzo Spinelli
  • Udo Michael Weigel
  • Sofia Passera
  • Nicola Pesenti
  • Fabio Mosca
  • Alessandro Torricelli
  • Monica Fumagalli
  • Gorm Greisen
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OBJECTIVES: A new device that combines, for the first time, two photonic technologies (time-resolved near-infrared spectroscopy and diffuse correlation spectroscopy) was provided and tested within the BabyLux project. Aim was to validate the expected changes in cerebral oxygenation and blood flow.

METHODS: A pulse oximeter and the BabyLux device were held in place (right hand/wrist and frontoparietal region, respectively) for 10 min after birth in healthy term infants delivered by elective caesarean section. Pulse oximeter saturation (SpO2), cerebral tissue oxygen saturation (StO2) and blood flow index (BFI) were measured over time. Tissue oxygen extraction (TOE) and cerebral metabolic rate of oxygen index (CMRO2I) were calculated.

RESULTS: Thirty infants were enrolled in two centres. After validity check of data, 23% of infants were excluded from TOE and CMRO2I calculation due to missing data. As expected, SpO2 (estimate 3.05 %/min; 95% CI 2.78 to 3.31 %/min) and StO2 (estimate 3.95 %/min; 95% CI 3.63 to 4.27 %/min) increased in the first 10 min after birth, whereas BFI (estimate -2.84×10-9 cm2/s/min; 95% CI -2.50×10-9 to -3.24×10-9 cm2/s/min) and TOE (estimate -0.78 %/min; 95% CI -1.12 to -0.45 %/min) decreased. Surprisingly, CMRO2I decreased (estimate -7.94×10-8/min; 95% CI -6.26×10-8 to -9.62×10-8/min).

CONCLUSIONS: Brain oxygenation and BFI during transition were successfully and simultaneously obtained by the BabyLux device; no adverse effects were recorded, and the BabyLux device did not limit the standard care. The preliminary results from clinical application of the BabyLux device are encouraging in terms of safety and feasibility; they are consistent with previous reports on brain oxygenation during transition, although the interpretation of the decreasing CMRO2I remains open.

TRIAL REGISTRATION NUMBER: NCT02815618.

OriginalsprogEngelsk
TidsskriftArchives of Disease in Childhood. Fetal and Neonatal Edition
Vol/bind104
Udgave nummer6
Sider (fra-til)F648-F653
ISSN1359-2998
DOI
StatusUdgivet - 2019

Bibliografisk note

© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.

ID: 58061215