Abstract：Objective To investigate the development of nocturnal sleep pattern in infants. Methods Fifty healthy full-term newborns born in Chongqing Maternal and Child Health Care Hospital were chosen for a prospective longitudinal study. A non-invasive sleep monitor, Actiwatch, was used to monitor infants' 12 sleep parameters on the 10th day, 28th day, the first Tuesday at the 2nd, 3rd, 4th, 5th, 6th, 9th and 12th month after birth, each monitoring time lasting 60 hours. All sleep parameters were analyzed by two-level mixed effect model. Results Twenty-two boys and 25 girls completed the whole follow-up study. From birth to the 12th month after birth, the nocturnal sleep onset latency (NSOL) decreased by about 48% at 3 months of age and by 83% at 6 months of age. The nocturnal sleep efficiency (NSE%) increased from 66% to 87%, the nocturnal total sleep time (NTST) increased from 416 minutes to 517 minutes, and the longest nocturnal continuous sleeping time (L-NCST) increased from 197 minutes to 327 minutes. NSE%, NTST and L-NCST increased with age (PPPPConclusions Infantile nocturnal sleep patterns develop rapidly during the first 6 months, especially within the first 3 months after birth. Partial infantile sleep parameters are related to gender.
Hemmi MH, Wolke D, Schneider S. Associations between problems with crying, sleeping and/or feeding in infancy and long-term behavioural outcomes in childhood: a metaanalysis[ J]. Arch Dis Child, 2011, 96(7): 622-629.
Galland BC, Taylor BJ, Elder DE, et al. Normal sleep patterns in infants and children: a systematic review of observational studies[J]. Sleep Med Rev, 2012, 16(3): 213-222.
[4]
Sadeh A. The role and validity of actigraphy in sleep medicine: an update[J]. Sleep Med Rev, 2011, 15(4): 259-267.
So K, Buckley P, Adamson TM, et al. Actigraphy correctly predicts sleep behavior in infants who are younger than six months, when compared with polysomnography[J]. Pediatr Res, 2005, 58(4): 761-765.
[7]
Sung M, Adamson TM, Horne RS. Validation of actigraphy for determining sleep and wake in preterm infants[J]. Acta Paediatr, 2009, 98(1): 52-57.
So K, Adamson TM, Horne RS, et al. The use of actigraphy for assessment of the development of sleep/wake patterns in infants during the first 12 months of life[J]. Sleep Res, 2007, 16(2): 181-187.
[10]
Henderson JM, France KG, Blampied NM. The consolidation of infants' nocturnal sleep across the first year of life[J]. Sleep Med Rev, 2011, 15(4): 211-220.
[11]
Henderson JM, France KG, Owens JL, et al. Sleeping through the night: the consolidation of self-regulated sleep across the first year of life[J]. Pediatrics, 2010, 126(5): e1081-e1087.
[12]
Insana SP, Gozal D, Montgomery-Downs HE. Invalidity of one actigraphy brand for identifying sleep and wake among infants[J]. Sleep Med, 2010, 11(2): 191-196.
[13]
Touchette E, Dionne G, Forget-Dubois N, et al. Genetic and environmental influences on daytime and nighttime sleep duration in early childhood[J]. Pediatrics, 2013, 131(6): e1874-e1880.
