TY - JOUR
T1 - The value of cardiorespiratory parameters for sleep state classification in preterm infants
T2 - A systematic review
AU - de Groot, Eline R
AU - Knoop, Marit S
AU - van den Hoogen, Agnes
AU - Wang, Xiaowan
AU - Long, Xi
AU - Pillen, Sigrid
AU - Benders, Manon
AU - Dudink, Jeroen
N1 - Funding Information:
We thank K. Hagoort, MA, linguist, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, the Netherlands, for reading and correcting the manuscript. The authors acknowledged the financial support of EU H2020 MSCA-ITN-2018: INtegrating Functional Assessment measures for Neonatal Safeguard (INFANS), funded by the European Commission under Grant Agreement # 813483 .
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/8
Y1 - 2021/8
N2 - Cardiorespiratory activity is highly associated with infants' sleep duration and quality. We performed a systematic literature search of PubMed and EMBASE databases to investigate if and how cardiorespiratory parameters can be used for sleep state classification in preterm infants and in what way maturation influences this relation. All retrieved citations were screened against predetermined inclusion and exclusion criteria. Only studies of preterm infants (<37 wk postmenstrual age during sleep state classification) admitted to a neonatal ward and of whom at least one sleep state and one cardiorespiratory parameter was measured, were included. Two researchers independently reviewed the included studies on methodological quality. Of the 1097 initially retrieved studies, 23 were included for analysis. Heart rate and respiration frequency are strongly correlated with active sleep and quiet sleep. In quiet sleep, as compared to active sleep, respiratory frequency is more stable, and the heart rate is lower and less variable. This association, however, differed across preterm birth subtypes (i.e., extremely, very or late preterm), indicating that maturation - in the form of both gestational and postnatal age - influences the cardiorespiratory characteristics of preterm sleep states. The knowledge gained from this review can help improve behavioral sleep classification and automated sleep classification algorithms for preterm infants.
AB - Cardiorespiratory activity is highly associated with infants' sleep duration and quality. We performed a systematic literature search of PubMed and EMBASE databases to investigate if and how cardiorespiratory parameters can be used for sleep state classification in preterm infants and in what way maturation influences this relation. All retrieved citations were screened against predetermined inclusion and exclusion criteria. Only studies of preterm infants (<37 wk postmenstrual age during sleep state classification) admitted to a neonatal ward and of whom at least one sleep state and one cardiorespiratory parameter was measured, were included. Two researchers independently reviewed the included studies on methodological quality. Of the 1097 initially retrieved studies, 23 were included for analysis. Heart rate and respiration frequency are strongly correlated with active sleep and quiet sleep. In quiet sleep, as compared to active sleep, respiratory frequency is more stable, and the heart rate is lower and less variable. This association, however, differed across preterm birth subtypes (i.e., extremely, very or late preterm), indicating that maturation - in the form of both gestational and postnatal age - influences the cardiorespiratory characteristics of preterm sleep states. The knowledge gained from this review can help improve behavioral sleep classification and automated sleep classification algorithms for preterm infants.
KW - Classification
KW - Heart rate
KW - NICU
KW - Preterm infant
KW - Respiration
KW - Sleep
UR - http://www.scopus.com/inward/record.url?scp=85103787127&partnerID=8YFLogxK
U2 - 10.1016/j.smrv.2021.101462
DO - 10.1016/j.smrv.2021.101462
M3 - Review article
C2 - 33826975
SN - 1087-0792
VL - 58
SP - 1
EP - 10
JO - Sleep medicine reviews
JF - Sleep medicine reviews
M1 - 101462
ER -