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Communication Dans Un Congrès Année : 2016

Distal skin vasodilation decreases wakefulness duration in preterm neonates

Résumé

Sleep is essential for normal development and is particularly important in infancy and early childhood as infants spend over 70% of each 24 hours asleep and children around 50%. Sleep states have a significant effect on the cardiovascular system and temperature regulation. As these systems are immature in the first years of life, particularly in infants born preterm, instabilities in cardiorespiratory and temperature control are common. These can have significant long term consequences for infant development. This symposium will discuss the effects of respiratory instability and control of temperature during the newborn and postnatal period and the longer term consequences of any disruptions. Prof Bach will report of her study of body (distal and proximal) temperature evolution according to time before sleep onset in preterm neonates. Her results point out distal vasodilation and distal to proximal gradient increase before sleep onset as it has already been observed in adults and elderly people. Prof Elder will present data on intermittent hypoxia measured in preterm and term infants through the first year of life by assessing the desaturation index (DSI) on overnight oximetry. The presentation will discuss differences between DSI values in term and preterm infants, changes over the first year of life and whether it is possible to predict at neonatal discharge infants who will have ongoing respiratory instability after discharge home. Prof Horne will present data contrasting the consequences of apnoea and periodic breathing in term and preterm infants on cerebral oxygenation over the first 6 months after term equivalent age. These studies highlight the significant effects of short apnoeas, which are normally thought benign, on the developing brain. Dr Wiesemann will present results of a large base sleep study (100 infants, 8-12 m of age) in a home setting. Sleep was measured with an Accelerometer (Actigraph wGT3X-BT) and sleep diaries. Insights for normal sleep patterns of babies at this age will be reported. Different analysis approaches to analyse Accelerometer data for sleep quality will also be presented. Prof Franco will present data from the French birth-cohort AuBE study which assessed sleep and neurodevelopment at birth, 6 months and 3 years of age. Full-scale and particularly verbal IQ scores at 3 years old could be impacted by early sleep characteristics measured by PSG. Daytime active sleep percentage may favour verbal capacity while number of arousals per hour during night-sleep may be detrimental to it when adjusted on night or day characteristics and maternal and child risk factors.
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Dates et versions

hal-04251918 , version 1 (20-10-2023)

Identifiants

  • HAL Id : hal-04251918 , version 1

Citer

Véronique Bach. Distal skin vasodilation decreases wakefulness duration in preterm neonates. Development of sleep in the first year of life, international pediatric sleep association congress, Mar 2016, Taipei, Taiwan. ⟨hal-04251918⟩

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