摘要
目的本研究在家庭自然环境下，通过对婴儿生后第一年睡眠／觉醒行为的纵向随访，探索婴儿期睡眠、觉醒时间的发展变化过程。方法研究对象来自全国9个城市，共524名足月健康新生儿，自婴儿生后2d始，通过家长睡眠日记采集新生儿期每周连续3d，2～12月龄连续7d婴儿睡眠／觉醒行为的相关信息。结果婴儿白天睡眠时间在0～2、3—4、5～6和8—9月龄变化显著，其中生后第1个月发展速率最快，白天睡眠时间构成比从生后2d的82．4％下降至1月龄的62．8％；2、4、6和9月龄的睡眠时间构成比分别为56．6％、48．2％、42．7％和35．7％；白天睡眠次数从生后2d的3．7次减少为12月龄的2次。婴儿夜间连续睡眠能力从生后1个月起逐步增强，4月龄时最长连续睡眠时间延长至6．8h，6月龄后夜醒次数少于0．5次；同时夜晚睡眠时间在4和9月龄时显著增加，夜间睡眠时间构成比从生后2d的55．8％分别增加至4月龄的64．3％和9月龄的71．2％。整体上，婴儿期24h睡眠时间随月龄增加呈下降趋势。结论0～6和8～9月龄是婴儿睡眠／觉醒时间发展的关键阶段。
Objective This was a nationwide study of sleep circadian in term infants. The aim was to understand the development characteristics of infants＇ sleep/wake patterns longitudinally in their own home environments over the first 12 months of life. Method Totally 524 healthy term infants from 9 urban districts took part in this project. Their sleep/wake patterns over 24 h were recorded using parental sleep diaries, from the 2nd day to 12 months old. Result The results showed that infant daytime sleep changed significantly at 0-2, 3-4, 5-6, and 8-9 months after birth, and the change was the fastest in the first month, the mean percentage of daytime sleep decreased from 82. 4% at Day 2 to 62. 8% at 1 month old. Also, the average number of naps reduced from 3.7 to 2 across the infancy. The ability of continuous sleep throughout the night gradually enhanced from 1 month old, and the nocturnal longest sleep time extended to 6. 8 h at 4 months of age as well as the nighttime awakening frequency less than 0. 5 over 6 months old. Additionally, the nighttime sleep increased significantly at 4 and 9 months after birth, where the proportion of nighttime sleep increased from 55.8% at Day 2 to 64. 3% of 4 months and 71.2% of 9 months respectively. In general, the total sleep time over a 24 h period presented a downward trend as the infant aged. Conclusion The periods 0-6 and 8-9 months after birth were the key periods for the development of infant sleep.
出处
《中华儿科杂志》
CAS
CSCD
北大核心
2009年第7期499-503,共5页
Chinese Journal of Pediatrics
关键词
睡眠
觉醒
婴儿
日记
Sleep
Arousal
Infant
Diaries
