Predição do parto prematuro: avaliação sequencial do colo uterino e do teste para proteína-1 fosforilada ligada ao fator de crescimento insulina-símile

dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorROLNIK, Daniel Lorber
dc.contributor.authorBITTAR, Roberto Eduardo
dc.contributor.authorCARVALHO, Mário Henrique Burlacchini de
dc.contributor.authorZUGAIB, Marcelo
dc.contributor.authorFRANCISCO, Rossana Pulcineli Vieira
dc.date.accessioned2014-07-03T20:49:17Z
dc.date.available2014-07-03T20:49:17Z
dc.date.issued2013
dc.description.abstractPURPOSE: To investigate the usefulness of the measurement of cervical length and of the test for phosphorylated insulin-like growth factor binding protein-1 (phIGFBP-1) performed sequentially in the prediction of preterm birth and the correlation between tests. METHODS: We analyzed data from 101 asymptomatic pregnant women with a history of premature delivery. The ultrasound measurement of cervical length and phIGFBP-1 test were performed in parallel every three weeks, between 24 and 34 week. The best cutoff value for each cervical evaluation was established by the ROC curve, and the two tests were compared using nonparametric tests. We determined the sensitivity, specificity and predictive values of each test and of the association of the exams for the occurrence of delivery before the 37th weeks. RESULTS: There were 25 preterm births (24.8%). The cervix length showed the highest sensitivity and was able to predict preterm birth in all evaluations, with similar accuracy at different gestational ages. The test for phIGFBP-1 was not helpful at 24 weeks, but was able to predict prematurity when performed at 27, 30 and 33 weeks. The combination of tests increased the sensitivity (81.8%) and negative predictive value (93.7%) when compared to the separate use of each test. The mean cervical length was lower in women with a positive test. CONCLUSIONS: Both cervical length and the test for phIGFBP-1 were able to predict premature delivery, and sequential combination of both tests showed a high sensitivity and high negative predictive value.
dc.description.abstractOBJETIVOS: Averiguar a utilidade da medida do comprimento do colo uterino e do teste para proteína-1 fosforilada ligada ao fator de crescimento insulina-símile (phIGFBP-1), realizados de maneira sequencial, na predição do parto prematuro e a existência de correlação entre os testes. MÉTODOS: Foram submetidos a análise secundária os dados de 101 gestantes assintomáticas com antecedente de prematuridade. A medida ultrassonográfica do comprimento do colo e o teste para phIGFBP-1 foram realizados em paralelo a cada três semanas, entre a 24ª e a 34ª semana. O melhor valor de corte do colo uterino para cada avaliação foi estabelecido por meio de curva ROC, e ambos os testes foram comparados entre si por meio de testes não paramétricos. Foram obtidas a sensibilidade, a especificidade e os valores preditivos de cada teste e da associação dos exames para a ocorrência de parto antes de 37 semanas. RESULTADOS: Houve 25 partos prematuros (24,8%). O comprimento do colo apresentou maior sensibilidade e foi capaz de predizer o parto prematuro em todas as avaliações, com acurácia semelhante em diferentes idades gestacionais. O teste para phIGFBP-1 não foi útil na 24ª semana, porém foi capaz de predizer independentemente a prematuridade na 27ª à 30ª e 33ª semana. A associação dos exames elevou a sensibilidade (81,8%) e o valor preditivo negativo (93,7%) quando comparada à utilização isolada dos testes. O comprimento cervical médio foi menor em gestantes com teste positivo. CONCLUSÕES: Tanto o comprimento cervical quanto o teste para phIGFBP-1 foram capazes de predizer independentemente o parto prematuro, e a associação sequencial de ambos os exames apresentou elevada sensibilidade e alto valor preditivo negativo.
dc.description.indexMEDLINE
dc.identifier.citationREVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRíCIA, v.35, n.9, p.394-400, 2013
dc.identifier.doi10.1590/S0100-72032013000900003
dc.identifier.issn0100-7203
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/5781
dc.language.isopor
dc.publisherFederação Brasileira das Sociedades de Ginecologia e Obstetrícia
dc.relation.ispartofRevista Brasileira de Ginecologia e Obstetrícia
dc.rightsopenAccess
dc.rights.holderCopyright Federação Brasileira das Sociedades de Ginecologia e Obstetrícia
dc.subjectPremature birth
dc.subjectRisk assessment
dc.subjectCervix
dc.subjectCervical length measurement
dc.subjectInsulin-like growth factor binding protein-1
dc.subjectBiological markers
dc.subjectNascimento prematuro
dc.subjectMedição de risco
dc.subjectColo do útero
dc.subjectMedida do comprimento cervical
dc.subjectProteína-1 de ligação a fator de crescimento insulin-like
dc.subjectMarcadores biológicos
dc.subject.wosObstetrics & Gynecology
dc.titlePredição do parto prematuro: avaliação sequencial do colo uterino e do teste para proteína-1 fosforilada ligada ao fator de crescimento insulina-símile
dc.title.alternativePreterm birth prediction: sequential evaluation of the cervix and the test for phosphorylated protein-1 linked to insulin-like growth factor
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.citation.scopus3
hcfmusp.contributor.author-fmusphcDANIEL LORBER ROLNIK
hcfmusp.contributor.author-fmusphcROBERTO EDUARDO BITTAR
hcfmusp.contributor.author-fmusphcMARIO HENRIQUE BURLACCHINI DE CARVALHO
hcfmusp.contributor.author-fmusphcMARCELO ZUGAIB
hcfmusp.contributor.author-fmusphcROSSANA PULCINELI VIEIRA FRANCISCO
hcfmusp.description.beginpage394
hcfmusp.description.endpage400
hcfmusp.description.issue9
hcfmusp.description.volume35
hcfmusp.origemSciELO
hcfmusp.origem.pubmed24217567
hcfmusp.origem.scieloSCIELO:S0100-72032013000900003
hcfmusp.origem.scopus2-s2.0-84887538818
hcfmusp.publisher.cityRIO DE JANEIRO
hcfmusp.publisher.countryBRAZIL
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