目的了解婴儿期白天睡眠/觉醒模式发展变化过程。方法采用睡眠活动记录仪Actiwatch(简称腕表)监测50名婴儿睡眠/觉醒模式。共9次家庭监测,依次为生后d10,d28,第2、3、4、5、6、9和12个月的第一周的周二至周五,每次家庭监测的时间约为60 h。对白天连续觉醒时间、连续睡眠时间、睡眠次数、睡眠比例等重要参数的性别月龄分布变化趋势采用二水平混合效应模型(Mixed Models)进行分析。结果共有47例健康足月婴儿完成研究,从生后10 d到12月龄,白天最长连续睡眠时间从241 min减到115 min;白天睡眠比例从68.22%减至19.39%;白天最长连续觉醒时间从114 min增到318.5 min。白天睡眠次数从生后28 d的4次减到12月龄的2次。白天睡眠次数、最长和平均连续睡眠时间、睡眠比例均随月龄增多呈减少趋势(P<0.01)。白天最长、最短、平均连续觉醒时间均随月龄增加呈增多趋势(P<0.01)。结论重庆城市婴儿出生10 d至12月龄白天睡眠/觉醒模式发展变化明显,随月龄增长白天连续觉醒时间增加,白天睡眠比例明显减少,出生2月内变化最为迅速。 Objective To understand the development and change of sleep / wake pattern during infancy. Methods A sleep activity recorder, Actiwatch (referred to as the watch), was used to monitor 50 infant sleep / wake patterns. A total of 9 family visits followed by births d10, d28, and from Tuesday to Friday in the first week of the 2nd, 3rd, 4th, 5th, 6th, 9th and 12th months of each survey were conducted for about 60 h . The trend of monthly variation in the age distribution of important daytime wakefulness, continuous sleep time, number of sleeps, sleep rate and other important parameters was analyzed using two-level mixed models. Results A total of 47 healthy term infants completed the study. The longest continuous daytime sleep time was reduced from 241 min to 115 min from day 10 to 12 months. The daytime sleep rate was reduced from 68.22% to 19.39% Awakening time increased from 114 min to 318.5 min. The number of sleep during the day reduced from 4 times 28 days after birth to 12 months 12 months. The number of sleep during the day, the longest and average continuous sleep time, the proportion of sleep decreased with increasing age (P <0.01). The longest, shortest and mean continuous awakenings during the day increased with the increase of age (P <0.01). Conclusion The development of daytime sleep / wake patterns of 10 d to 12 months old babies born in Chongqing city is obvious. With the increase of daytime, the percentage of daytime sleep decreases obviously with the increase of daytime, and the change is most rapid in February.