Analysis of frontal sharp transients in 32 neonatal polysomnography in healthy fullterm newborns.
OBJECTIVE
To identify and quantify frontal sharp transients found in neonatal polysomnography of healthy full term newborns in each stage of the sleep-wake cycle within the first 48 hours of life.


METHODS
The EEG from healthy term 32 newborns, legal age of two days and with adequate monitoring during pregnancy. Frontal sharp transients (FST) were quantified, according to synchronous or asynchronous, in each stage of the sleep-wake cycle. The results were compared by Kruskal-Wallis-test.


RESULTS
FST were counted individually in each sleep phase, being present during quiet sleep (QS) in all tracings. FST bilateral and synchronous and lateralized FST were more frequent during QS (p<0.05).


CONCLUSIONS
Lateralized FST were found mostly during quiet sleep. FST asynchronous in healthy full term newborns were normal and depended of FST density. FST unilateral appearance should not necessarily be considered abnormal as well.
Crippa
Ana Chrystina
AC
Neurology Division, Internal Medicine Department, Hospital de Clínicas, University Federal of Paraná, Curitiba, PR, Brazil. anacrippa@uyfpr.br
Silvado
Carlos Eduardo
CE
Paola
Luciano de
Ld
Scola
Rosana H
RH
Fernandes
Regina Maria
RM
Werneck
Lineu César
LC
D001034:Apgar Score; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D001835:Body Weight; D004569:Electroencephalography; D005260:Female; D005625:Frontal Lobe / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D017286:Polysomnography / Q000379:methods*; D012890:Sleep / Q000502:physiology*; D012894:Sleep Stages / Q000502:physiology; D018709:Statistics, Nonparametric