The reliability of transabdominal cervical length measurement in a low-risk obstetric population: Comparison with transvaginal measurement

Peng, Cheng-Ran; Chen, Chie-Pein; Wang, Kuo-Gon; Wang, Liang-Kai; Chen, Chen-Yu; Chen, Yi-Yung

doi:10.1016/j.tjog.2014.03.007

Cited by 15 publications

(15 citation statements)

References 27 publications

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“…Furthermore, Roh, H.J et al found that TA cervical length measurements were correlated with TV measurements overall, hence TA could also be used as a cervical length screening tool (8,24). Recently, Peng et al (25) also made the same conclusion but directed more specifically to the cervical length screening in low-risk pregnant women.…”

Section: © C I C E D I Z I O N I I N T E R N a Z I O N A L I Discussionmentioning

confidence: 82%

The cervical length correlates with the amount of bleeding during cesarean section of the pernicious placenta previa

Feng¹

2017

JPM

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Introduction: to investigate the association between the amount of bleeding during a cesarean section and the effacement of the uterine cervix in patients with pernicious placenta previa. Methods: this study reviewed 50 singleton pregnancies with pernicious placenta previa. In cases of pernicious placenta previa, the cervical length were retrospectively measured and compared with the amount of bleeding during the cesarean section. Results: there was a significantly negative correlation between the amount of bleeding and cervical length (r = -0.390, P =0.005). The threshold cervical length associated with massive bleeding (>2500 mL) was 34.5mm, based on an ROC curve. Then, all cases were stratified by cervical length, ≤34.5mm was defined as Group S, and 34.5 mm as Group L. The amount of bleeding in Group S was significantly larger than in Group L, and the length of hospital stay was longer in Group S. It was also found that hysterectomy after CS was significantly higher in Group S than in Group L. However, there were no significant differences in any of the other maternal demographics between the two groups. Conclusion: this study demonstrated that a short cervical length, in cases with pernicious placenta previa, was associated with massive bleeding during the operation. In addition, short cervical length seems to be one of the warning signs for massive bleeding and cesarean hysterectomy during the operation for pernicious placenta previa.

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Section: © C I C E D I Z I O N I I N T E R N a Z I O N A L I Discussionmentioning

confidence: 82%

The cervical length correlates with the amount of bleeding during cesarean section of the pernicious placenta previa

Feng¹

2017

JPM

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“…27 However, the unpredictable effect of the volume of the bladder on the elongation of the cervix and the difficulty of its visualization due to obstruction by fetal parts can lead to unsatisfactory images in up to 25% of the cases. 27 Different from what has already been said about the transvaginal evaluation, this method still presents significant divergences in its standardization, 28,29 and it does not exclude the need for the complementary transvaginal exam, when the cervical shortening is identified. 28 The main objective of this study was to define reference range values of US measurements of the uterine cervix for low-risk pregnant women according to GA, from 12 to 36 weeks, and to associate these values with some obstetric, sociodemographic and lifestyle variables.…”

Section: Discussionmentioning

confidence: 99%

Reference Ranges for Ultrasonographic Measurements of the Uterine Cervix in Low-Risk Pregnant Women

Andrade

Bortoletto

Almeida

et al. 2017

Rev Bras Ginecol Obstet

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Objective To define transvaginal ultrasound reference ranges for uterine cervix measurements according to gestational age (GA) in low-risk pregnancies. Methods Cohort of low-risk pregnant women undergoing transvaginal ultrasound exams every 4 weeks, comprising measurements of the cervical length and volume, the transverse and anteroposterior diameters of the cervix, and distance from the entrance of the uterine artery into the cervix until the internal os. The inter-and intraobserver variabilities were assessed with the linear correlation coefficient and the Student t-test. Within each period of GA, 2.5, 10, 50, 90 and 97.5 percentiles were estimated, and the variation by GA was assessed with analysis of variance for dependent samples. Mean values and Student t-test were used to compare the values stratified by control variables. Results After confirming the high reproducibility of the method, 172 women followed in this cohort presented a reduction in cervical length, with an increase in volume and in the anteroposterior and transverse diameters during pregnancy. Smaller cervical lengths were associated with younger age, lower parity, and absence of previous cesarean section (C-section). Conclusion In the studied population, we observed cervical length shortening throughout pregnancy, suggesting a physiological reduction mainly in the vaginal portion of the cervix. In order to better predict preterm birth, cervical insufficiency and premature rupture of membranes, reference curves and specific cut-off values need to be validated. ResumoObjetivo Elaborar curvas de referências de medidas ultrassonográficas de colo uterino por idade gestacional (IG) em gestações de baixo risco. Métodos Coorte de gestantes de baixo risco, submetidas a ultrassom transvaginal repetido a cada 4 semanas, com medida do comprimento, dos diâmetros antero-

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“…Avaliaram apenas a sensibilidade, especificidade, valores preditivos positivos e negativos entre as vias US-TA e US-TV (Brown et al, 1986;Marren et al, 2014;Peng et al, 2015;Roh et al, 2013;Saul et al, 2008b).…”

Section: Concordância E Discordância Com Outros Estudos E Revisõesunclassified

“…Comparando as medidas do CCU realizadas entre as duas vias (US-TA e US-TV), por ambos observadores, elas não foram estatisticamente diferentes, provavelmente pelo fato dos dois observadores avaliarem-as sob as mesmas condições entre um curto intervalo de tempo, e seguindo os mesmos protocolos de mensuração padronizados mundialmente (Berghella et al, 2007;Burger et al, 1997;Rumack et al, 1998). Estudos previamente publicados, mostraram o mesmo resultado, ou seja, as medidas do CCU realizadas pela US-TA são semelhantes às medidas feitas pela US-TV Marren et al, 2014;Peng et al, 2015;Roh et al, 2013;Saul et al, 2008b;Stone et al, 2010).…”

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“…Em relação ao fato de que na nossa pesquisa, a US-TV no segundo trimestre fornece valores de CCU discretamente elevados comparados com a US-TA, embora não estatisticamente diferentes, isso também já foi relatado em outros estudos prévios (Peng et al, 2015;Roh et al, 2013;Stone et al, 2010). O achado acima descrito está de acordo com alguns trabalhos publicados, no que concerne às as limitações e desvantagens da US-TA inerentes à alguns fatores tais como: ossos da pelve, a posição uterina e fetal, obesidade, a bexiga e o tecido vaginal (Ayers et al, 1988;Confino et al, 1986;Hernandez-Andrade et al, 2012a;Mason & Maresh, 1990;Rumack et al, 1998;Sarti et al, 1979) .…”

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Reprodutibilidade da medida do comprimento do colo uterino por ultrassonografia

Ferreira¹

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Minha profunda gratidão, Ao meu orientador, Professor Francisco Maud Filho, por sempre me incentivar, pelos seus valiosos ensinamentos, exemplo de humildade e de um profissional que muito admiro e tenho apreço. Sou eternamente grata e honrada pela oportunidade que o senhor me concebeu em fazer parte desse projeto, muito contribuindo para meu conhecimento científico. Sua incansável busca pela ciência, pelos novos conhecimentos, muito me motivou e jamais será esquecido. O senhor me abriu um novo caminho, o meu eterno obrigado. Ao Dr. Wellington de Paula Martins, meu co-orientador, por sempre estar disponível a me ajudar, por sua dedicação no campo da pesquisa mundial e principalmente, seu imensurável conhecimento que foi compartilhado comigo ao longo desses anos. Minha gratitude é tamanha que palavras seriam insuficientes para eu expressar agradecer, seu exemplo levarei para sempre comigo. À família FATESA, funcionários, alunos, professores, administradores, enfim, todos que compõem minha 'segunda casa', recebam meus sinceros agradecimentos pois saibam que cada um de vocês teve um relevante papel nessa minha jornada. Muito foi apreciado a amizade, o convívio, as risadas ao longo desses anos. À minha querida amiga Susilei, o quão admirável é a sua devoção ao seu trabalho. O amor, carinho e sua gentileza sempre para conosco e para com os pacientes são magnificentes. Você teve um papel incomensurável nesse estudo. Obrigada por tudo, e por simplesmente ser esse maravilhoso ser humano. À Pamera, co-autora e minha companheira de jornada nesses anos, por todo carinho e dedicação, sempre disponível para ajudar entre tantos contratempos das nossas coletas de dados. RESUMO FERREIRA, A.E.G.M.T. (2019). Reprodutibilidade da medida do comprimento do colo uterino por ultrassonografia (Dissertação

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The reliability of transabdominal cervical length measurement in a low-risk obstetric population: Comparison with transvaginal measurement

Cited by 15 publications

References 27 publications

The cervical length correlates with the amount of bleeding during cesarean section of the pernicious placenta previa

The cervical length correlates with the amount of bleeding during cesarean section of the pernicious placenta previa

Reference Ranges for Ultrasonographic Measurements of the Uterine Cervix in Low-Risk Pregnant Women

Reprodutibilidade da medida do comprimento do colo uterino por ultrassonografia

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