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Infant behaviour in response to a change in body position from side to prone during sleep
1Department of Paediatrics, University Hospital of Bergen, Norway.
Insights
Sudden infant death (SID) risk may increase as infants struggle to turn their faces from a prone position during sleep. This study highlights difficulties in repositioning, posing potential dangers for young infants.
Area of Science:
- Pediatrics
- Sleep Medicine
- Infant Safety
Background:
- Infant sleep position is a critical factor in sudden infant death (SID).
- Understanding infant responses to positional changes during sleep is crucial for safety.
Purpose of the Study:
- To investigate infant ability to reposition from side to prone sleep positions.
- To assess cardiorespiratory responses in infants remaining prone during sleep.
Main Methods:
- Polysomnographic recordings were used to monitor 26 infants at 2.5 months and 20 at 5 months.
- Infants were repeatedly tilted from side to prone sleep positions.
- Ability to turn the face away and cardiorespiratory responses were recorded.
Main Results:
- Approximately 66% of infants failed to turn their faces away from the mattress at least once.
- Difficulties in repositioning were observed, often involving vigorous movements.
- Short apneas (3-14s) occurred in 75% of infants post-tilt; 13% experienced adverse cardiorespiratory events.
Conclusions:
- Infants face significant challenges repositioning their faces when placed prone during sleep.
- These difficulties may contribute to the risk of sudden infant death (SID) in young infants.
Unlabelled:
The consequences of provoking a change in the sleeping position from side to prone during quiet (non-REM) and active (REM) sleep in young infants were studied in terms of ability to turn the face away from the mattress within 3 min, and in terms of ventilatory and heart rate responses in those who remained face down. Twenty-six infants were exposed to repeated tilts from the side to prone at 2.5 months, and 20 at 5 months of age. Eighteen infants were tested on both occasions. A computer-aided multichannel system was used for polysomnographic recordings. Approximately 66% of the infants did not rotate the face away from the mattress on at least one occasion. There were no significant differences in the rate of face down outcome between sleep states or ages, and no consistent pattern of final face position following repeated tilts. The face to side position was commonly accomplished after considerable difficulties involving vigorous body movements, particularly if the arm became positioned between the body and the mattress or alongside the trunk after the tilt. Apnoeas of 3-14 s in immediate response to the tilt were observed in 75% of the infants monitored electronically. In 13% of the infants, all in a face down position, the test was terminated because of increases in heart and respiratory rates, drop in oxygen saturation, or marked pallor.
Conclusions:
The observed difficulties of obtaining a face to side position when suddenly exposed to the prone position during sleep, may render some young infants at risk of sudden infant death (SID).