Assessment of fetal lung maturity by ultrasound: objective study using gray-scale histogram

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dc.contributor.author Avritscher Beck, Ana Paula [UNIFESP]
dc.contributor.author Araujo Junior, Edward [UNIFESP]
dc.contributor.author Figueiredo Stochero Leslie, Ana Teresa [UNIFESP]
dc.contributor.author Camano, Luiz [UNIFESP]
dc.contributor.author Moron, Antonio Fernandes [UNIFESP]
dc.date.accessioned 2016-01-24T14:40:23Z
dc.date.available 2016-01-24T14:40:23Z
dc.date.issued 2015-04-01
dc.identifier http://dx.doi.org/10.3109/14767058.2014.927862
dc.identifier.citation Journal of Maternal-fetal & Neonatal Medicine. London: Informa Healthcare, v. 28, n. 6, p. 617-622, 2015.
dc.identifier.issn 1476-7058
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/38988
dc.description.abstract Objective: To evaluate lung maturity using ultrasound (US), comparing the subjective and gray-scale histogram (GSH) techniques.Methods: A total of 77 single pregnancies were evaluated and divided into the following two groups: 11 women of gestational age 28 to 35 + 6 weeks and 66 women >= 36 weeks. the women underwent to emergency or planned cesarean section, according to fetal-maternal indications. the US was performed on the mean sagittal plane of the fetal torso, in order to observe the lung and hepatic areas. Fetal lung maturity was evaluated subjectively and through GSH. After delivery, the incidence of respiratory distress in the newborn was evaluated. the analyses were considered to be correct or incorrect, and comparisons were made using the McNemar test. in order to compare lung/hepatic echogenicity using GSH in groups with and without respiratory distress, the Student's t-test was used.Results: the subjective evaluation identified 41 cases (53.2%) correctly and 36 (46.8%) incorrectly, while GSH found 58 (75.3%) correctly and 19 (24.7%) incorrectly (p = 0.006). There was a significant difference in mean lung/hepatic echogenicity between the groups with and without respiratory distress (1.05 versus 1.26; p = 0.002). in the group of 28 to 35 + 6 weeks, GSH presented sensitivity, specificity and accuracy in predicting respiratory distress of 61.9%, 89.1% and 81.6%, respectively.Conclusion: the evaluation of fetal lung maturity through GSH was more effective than the subjective method in predicting respiratory distress among newborns. en
dc.format.extent 617-622
dc.language.iso eng
dc.publisher Informa Healthcare
dc.relation.ispartof Journal of Maternal-fetal & Neonatal Medicine
dc.rights Acesso restrito
dc.subject Fetus en
dc.subject histogram en
dc.subject lung en
dc.subject maturity en
dc.subject respiratory distress en
dc.subject ultrasound en
dc.title Assessment of fetal lung maturity by ultrasound: objective study using gray-scale histogram en
dc.type Artigo
dc.rights.license http://informahealthcare.com/userimages/ContentEditor/1255620309227/Copyright_And_Permissions.pdf
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Fed Univ São Paulo EPM UNIFESP, Paulista Sch Med, Dept Obstet, São Paulo, SP, Brazil
dc.description.affiliation Fed Univ São Paulo EPM UNIFESP, Paulista Sch Med, Dept Pediat, Discipline Neonatal Pediat, São Paulo, SP, Brazil
dc.description.affiliationUnifesp Fed Univ São Paulo EPM UNIFESP, Paulista Sch Med, Dept Obstet, São Paulo, SP, Brazil
dc.description.affiliationUnifesp Fed Univ São Paulo EPM UNIFESP, Paulista Sch Med, Dept Pediat, Discipline Neonatal Pediat, São Paulo, SP, Brazil
dc.identifier.doi 10.3109/14767058.2014.927862
dc.description.source Web of Science
dc.identifier.wos WOS:000354606400001



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