Factors affecting yawning frequencies in preterm neonates.

Area of Science:

• Neonatology
• Behavioral Neuroscience
• Developmental Pediatrics

Background:

• Yawning, a neglected behavior, is gaining attention for its clinical implications, particularly in perinatal neurobehavioral assessment.
• Understanding factors influencing yawning in preterm infants is crucial for assessing their neurodevelopmental status.

Purpose of the Study:

• To investigate factors affecting yawning frequencies in hospitalized preterm neonates (N=58).
• To differentiate between hunger and sleep-related modulations of yawning.
• To examine the impact of demographic and clinical variables on yawning rates.

Main Methods:

• Observational study of 58 hospitalized preterm neonates.
• Recording yawning frequencies before and after feeding.
• Analyzing yawning rates in relation to sleep states and twin birth order.

Main Results:

• Preterm neonates exhibited significantly higher yawning frequencies before feeding compared to after feeding.
• This pre-feeding yawn modulation was independent of quiet sleep duration.
• Second-born twins showed increased yawning rates compared to first-born twins.

Conclusions:

• Yawning frequencies in preterm neonates appear modulated by distinct mechanisms, including hunger and vigilance.
• Findings suggest early emergence of neuropharmacological pathways involved in yawn modulation, observed in adults.
• Yawning may serve as a potential clinical marker in preterm infant neurobehavioral assessment.