Autonomic nervous system in newborns: a review based on heart rate variability

Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery
Sandra CardosoHercília Guimarães

Abstract

Heart rate variability (HRV) has been a relevant tool in the assessment of the autonomic nervous system (ANS). How autonomic control normally develops in newborns and how it is affected by gestational age (GA) is not fully understood. We aimed to review the current evidence on HRV in preterm (PT) and term neonates (TN) and investigate the relation between GA and the maturation of ANS. Electronic databases (Pubmed, World of Science, and Scopus) were searched for studies from 1997 to 2017 examining HRV (time and frequency domain) in PT and TN who followed to the Task Force (1996) guidelines. Ten studies met our inclusion criteria and were analyzed. An increasing postnatal age was related to a significant rise of HRV parameters. Several significant differences were established between PT and TN (lower values on PTN), also found when PTN are evaluated at their theoretical term age. In general, there were no relevant results on LF/HF (low frequency/high frequency) ratio, as being an adequate marker of sympathovagal balance, but this was not a universal finding of this review. Frequency parameters that were more often used to evaluate newborns and HF showed the most relevant increase with GA. HRV is an important tool to assess the ma...Continue Reading

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Citations

Jun 27, 2019·Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society·Sarah B MulkeyAdre J du Plessis
May 24, 2019·Annals of Human Biology·Yuko Tsunetsugu, Keita Ishibashi
Nov 28, 2019·Journal of Neonatal-perinatal Medicine·Y Hasegawa, M Hoshiyama
Apr 15, 2020·BMC Pediatrics·Petja FisterMatjaž Klemenc
Jan 15, 2021·Scientific Reports·Giovanna de Paula VidigalVitor E Valenti
Mar 7, 2021·International Journal of Environmental Research and Public Health·Letizia Della LongaTeresa Farroni
Oct 20, 2020·Frontiers in Neuroscience·Marco ChieraAndrea Manzotti
May 14, 2021·Journal of Clinical Monitoring and Computing·Lizelle Van WykWillem Pieter de Boode
Dec 10, 2021·Journal of Perinatal Medicine·Hadas Israeli-MendlovicMichal Katz-Leurer

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