Habituation responses to external stimuli: is the habituation of preterm infants at a postconceptual age of 40 weeks equal to that of term infants?

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dc.contributor.author Castillo, Mariana Ulhoa [UNIFESP]
dc.contributor.author Moraes Barros, Marina Carvalho de [UNIFESP]
dc.contributor.author Guinsburg, Ruth [UNIFESP]
dc.date.accessioned 2016-01-24T14:37:51Z
dc.date.available 2016-01-24T14:37:51Z
dc.date.issued 2014-09-01
dc.identifier http://dx.doi.org/10.1136/archdischild-2013-305626
dc.identifier.citation Archives of Disease in Childhood-fetal and Neonatal Edition. London: Bmj Publishing Group, v. 99, n. 5, p. F402-F407, 2014.
dc.identifier.issn 1359-2998
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/38198
dc.description.abstract Objective Compare the habituation responses to external stimuli between preterm infants at the postconceptual age of 40 weeks and term infants in the first days of life, and evaluate the habituation responses of the preterm infants until the age of 40 postconceptual weeks.Methods Prospective cohort study of preterm infants aged <32 weeks. the habituation responses to light, rattle, bell and tactile stimuli of preterm infants were assessed at 32, 34, 36 and 3840 postconceptual weeks. External stimuli were presented and responses were scored according to Lester and Tronik (2004). Habituation scores were compared between preterm and term infants, matched by sex, using t test. Repeated measures ANOVA was used to compare the responses between the different postconceptual gestational ages. Contrast models were used to verify the differences between the habituation responses according to the type of stimulus and the postconceptual ages.Results 51 preterm infants were studied (gestational age 29.4 +/- 2.4w; birth weight 1230 +/- 323 g). the scores for the habituation responses to the four stimuli progressively increased with advancing postconceptual age. At the age of 40 postconceptual weeks, the preterm infants were habituated to external stimuli similarly to the 51 studied term infants. the preterm infants showed higher habituation response scores for the rattle and bell stimuli than for the light and tactile stimuli.Conclusions Preterm infants improve their habituation responses to external stimuli as their postconceptual age increases, and, at 40 weeks of corrected age, they have similar responses to those exhibited by fullterm infants in the first days of life. en
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent F402-F407
dc.language.iso eng
dc.publisher Bmj Publishing Group
dc.relation.ispartof Archives of Disease in Childhood-fetal and Neonatal Edition
dc.rights Acesso restrito
dc.title Habituation responses to external stimuli: is the habituation of preterm infants at a postconceptual age of 40 weeks equal to that of term infants? en
dc.type Artigo
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Universidade Federal de São Paulo EPM Unifesp, Dept Pediat, Div Neonatal Med, Escola Paulista Med, BR-05448100 São Paulo, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo EPM Unifesp, Dept Pediat, Div Neonatal Med, Escola Paulista Med, BR-05448100 São Paulo, Brazil
dc.description.sponsorshipID FAPESP: 2011/18171-0
dc.identifier.doi 10.1136/archdischild-2013-305626
dc.description.source Web of Science
dc.identifier.wos WOS:000340781200011



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