Early Prediction of Preterm Delivery by Transvaginal Ultrasonography

Okitsu, Osamu; Mimura, Takashi; Nakayama, Tsuneyoshi; Aono, Toshihiro

doi:10.1097/00006254-199308000-00001

Cited by 31 publications

(42 citation statements)

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“…A ultra-sonografia transvaginal é ótimo meio para a avaliação do colo uterino na gestação. Quando realizada pela via abdominal, os resultados não são bons, uma vez que, para a adequada visualização do colo uterino, é necessário o enchimento da bexiga, o que provoca um falso alongamento deste e fechamento do seu orifício interno 13 . A obesidade materna e o polo cefálico também dificultam a visualização do colo pela via abdominal.…”

Section: Discussionunclassified

“…A obesidade materna e o polo cefálico também dificultam a visualização do colo pela via abdominal. A avaliação pela via transvaginal não necessita de bexiga repleta e permite a visualização de toda a sua extensão, desde a porção interna até a externa ou vaginal, fornecendo o tamanho real do comprimento do colo uterino 4,13 . No entanto, o exame do colo uterino pela via transvaginal também deve ser realizado com cautela, uma vez que aproximadamente 25% das medidas apresentam algum tipo de dificuldade de interpretação anatômica ou técnica 14 .…”

Section: Discussionunclassified

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Avaliação do risco para parto prematuro espontâneo pelo comprimento do colo uterino no primeiro e segundo trimestres da gravidez

Carvalho¹,

Bittar²,

Gonzales³

et al. 2002

Rev. Bras. Ginecol. Obstet.

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Section: Discussionunclassified

Avaliação do risco para parto prematuro espontâneo pelo comprimento do colo uterino no primeiro e segundo trimestres da gravidez

Carvalho¹,

Bittar²,

Gonzales³

et al. 2002

Rev. Bras. Ginecol. Obstet.

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“…16 Evaluation of cervix was more accurate and advantageous by Transvaginal ultrasonography than manual evaluation and trans abdominal evaluation. Few studies have attempted to evaluate its usefulness as a predictor of risk of preterm delivery.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, in women undergoing preterm labor, prediction of preterm delivery is done efficiently by transvaginal ultrasonography. [13][14][15][16] The cut-off limits proposed by each author were not shown reliable in any other sample than the initial one because of small sample size. To fill this gap current study was conducted with the aim of examination of the relationship between cervical length, funnelling and risk of preterm delivery with transvaginal ultrasonography in threatened preterm labor.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of uterine cervix with transvaginal ultrasonography in women with threatened preterm labor and or preterm labor

Shree¹,

Chitra²

2018

Int J Reprod Contracept Obstet Gynecol

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Background: Preterm delivery can be associated with substantial perinatal morbidity and mortality. Nearly in 5 to 13% of pregnancies, happening deliveries are preterm before 37 weeks' gestation. Thus, prediction of preterm labor in parturient can provide a window of opportunity to prevent these complications and to be better prepared to deal with them. Hence the current study has been conducted with an objective to assess the efficiency of cervical length and funneling as assessed by transvaginal ultrasonography in predicting preterm labor.Methods: The current study was a prospective study, conducted in the Department of Obstetrics Emergencies, Dhanalakshmi Srinivasan Medical College and Hospital between November 2015 to April 2017. The study population included 60 women with singleton pregnancy of gestational age between 28 + 0 and 36 + 6 weeks and with painful and regular contractions (>1/10 min for at least 1 hour). Cervical length, funnelling length measured at presentation and after 48 hours were considered as predictor variables. The outcomes of interest were delivery within 1 week, delivery before 37 weeks and delivery before 34 weeks.Results: There was a statistically significant difference in cervical length and funnelling length between term and preterm groups at the time of diagnosis and after 48 hours (P <0.001). The positive predictive value increased from 33.3% to 100% with cervical length ≤ 40 mm to ≤ 20 mm. The negative predictive value decreased from 100% to 79.2% with cervical length ≤40 mm to ≤20 mm. To predict a preterm delivery in threatened preterm delivery patients, the sensitivity of a cervical length of ≤25 mm was 77.7%, specificity was 95.2%, the positive predictive value was 87.5% and negative predictive value is 90.9%.Conclusions: Cervical length and funnelling as assessed by transvaginal ultrasonography are efficient in predicting preterm labor.

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“…О. Okitsu и соавт. [8] показали, что дилатация внутреннего зева >5 мм до 30 нед беремен-ности связана с преждевременными родами в 33,3%. Дру-гой симптом -пролабирование плодного пузыря в шейку матки с уменьшением ее функциональной длины, спон-танно или при надавливании рукой на дно матки.…”

Section: Abstract: Preterm Birth Ultrasound Cervicometry Cervical Cunclassified

Prediction and prevention of preterm birth: State-of-the-art

Манухин¹,

Firichenko²,

Mikailova³

et al. 2016

Ross. vestn. akush.-ginekol.

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Частота спонтанных преждевременных родов (ПР) в мире в последние годы составляет в среднем 11,1% и име-ет тенденцию к повышению [1]. Каждый год 15 млн детей рождаются недоношенными. На них приходится почти 75% перинатальной смертности и примерно 50% случаев неврологической заболеваемости [2,3]. В настоящее вре-мя ПР рассматриваются не как диагноз, а как «событие», наступившее раньше времени и способное повлечь за со-бой ряд неблагоприятных последствий для новорожден-ного. Предваряя основное изложение опубликованных научных работ, необходимо сделать важное уточнение. Современный подход к проблеме спонтанных преждевременных родов базируется на неполном понимании механизмов их возникновения, а также последовательности и сроков проведения профилактических мероприятий, которые должны предшествовать клиническим проявлениям преждевременных родов. Внимание в первую очередь сосредоточено на госпи-тализации беременных с симптомами преждевременных родов, а лечение направлено на подавление маточной активно-сти. Этот подход не снижает частоту преждевременных родов, но улучшает условия для досрочного родоразрешения. В настоящее время нет ни одного теста, который мог бы точно прогнозировать преждевременные роды и определять все дальнейшие действия. Хотя выполнение принятых в настоящее время акушерских рекомендаций уже привело к уменьше-нию перинатальной заболеваемости и смертности, нам необходима разработка целой научно обоснованной стратегии для профилактики преждевременных родов на основании объективных диагностических маркеров и эффективных про-филактических мероприятий. Цель этого обзора -в критическом освещении современных подходов к прогнозированию и профилактике преждевременных родов.Авторы информируют об отсутствии конфликта интересов. A current approach to the problem of spontaneous preterm birth is based on an incomplete understanding of the mechanisms of its occurrence, as well as on the sequence of and time for preventive measures that should precede the clinical manifestations of preterm labor. Attention is primarily centered on hospitalization of pregnant women with symptoms of preterm labor and their management aims to suppress uterine activity. This approach does not reduce preterm birth rates, but improves conditions for preterm delivery. As of now, there is no test that could accurately predict preterm birth and determine all further actions. Although the currently accepted obstetric guidelines have already resulted in a decrease in perinatal morbidity and mortality rates, an entire scientifically sound strategy must be elaborated to prevent preterm birth on the basis of objective diagnostic markers and effective preventive measures. The aim of this review is to critically analyze current approaches to predicting and preventing preterm birth. The authors declare no conflicts of interest.

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Early Prediction of Preterm Delivery by Transvaginal Ultrasonography

Cited by 31 publications

References 0 publications

Avaliação do risco para parto prematuro espontâneo pelo comprimento do colo uterino no primeiro e segundo trimestres da gravidez

Avaliação do risco para parto prematuro espontâneo pelo comprimento do colo uterino no primeiro e segundo trimestres da gravidez

Evaluation of uterine cervix with transvaginal ultrasonography in women with threatened preterm labor and or preterm labor

Prediction and prevention of preterm birth: State-of-the-art

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