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Cardio-respiratory control during sleep in infancy

Rosemary S C Horne1

  • 1The Ritchie Centre, Monash Institute of Medical Research, Monash University, Level 5, Monash Medical Centre, 246 Clayton Rd, Clayton, Victoria, Australia 3168.

Paediatric Respiratory Reviews
|March 26, 2013
PubMed

Insights

Infants

Area of Science:

  • Neonatal physiology
  • Cardio-respiratory control
  • Infant sleep studies

Background:

  • Autonomic control of cardio-respiratory systems matures during the first year of life.
  • Infants are vulnerable to cardio-respiratory instability, especially during sleep.
  • Immature responses to hypoxia increase infant vulnerability.

Purpose of the Study:

  • To examine the maturation of cardio-respiratory control in infants.
  • To investigate the impact of sleep state on cardio-respiratory stability.
  • To explore the relationship between immature responses and Sudden Infant Death Syndrome (SIDS).

Main Methods:

  • Observational study monitoring cardio-respiratory parameters during sleep.
  • Analysis of sleep state transitions and their effect on stability.
  • Assessment of infant responses to hypoxic challenges.

Main Results:

  • Cardio-respiratory instability is more pronounced during active sleep compared to quiet sleep.
  • Immature hypoxic responses are observed in young infants.
  • Major SIDS risk factors (prone sleeping, maternal smoking) impair cardio-respiratory control.

Conclusions:

  • Infant sleep state significantly influences cardio-respiratory stability.
  • Immature autonomic control and responses to hypoxia contribute to infant vulnerability.
  • Understanding these factors is crucial for SIDS prevention strategies.

Keywords:
Autonomic controlBlood pressureHeart rateSudden Infant Death Syndrome

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