Cervical length and the risk of spontaneous labor at term

Tolaymat, Lama; González-Quintero, Víctor Hugo; Sánchez-Ramos, Luis; Kaunitz, Andrew M.; Wludyka, Peter; OʼSullivan, Mary J.; Martin, Donald A.

doi:10.1038/sj.jp.7211819

Cited by 12 publications

(15 citation statements)

References 11 publications

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“…[16][17][18][19]29 Table 1 shows the characteristics of the included studies. In all, 735 women were analysed.…”

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

“…Gentle pressure exerted on the cervix by the transducer was reduced followed by minimal pressure to allow visualisation of the three landmarks; this procedure was repeated three times and the shortest measurement was recorded. 16 In all the included studies the women had empty bladders during the ultrasound scan.…”

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

“…In the other two studies, a 6-MHz probe was placed in the anterior fornix of the vagina. 16,29 Three anatomic landmarks defined the appropriate sagittal view: the internal os, the external os and the endocervical canal. The image was enlarged while visualising the three landmarks simultaneously.…”

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

“…[15][16][17][18][19] The aim of this meta-analysis is to evaluate the accuracy of TVU CL in the prediction of spontaneous onset of labour within 7 days in singleton gestations at term.…”

Section: Introductionmentioning

confidence: 99%

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Transvaginal ultrasound cervical length for prediction of spontaneous labour at term: a systematic review and meta‐analysis

Saccone

Simonetti

Berghella

2015

BJOG

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Background The possibility to predict the delivery date is a question frequently raised by pregnant women. However, a clinician has currently little to predict when a woman at term will deliver.Objective To evaluate the predictive accuracy of transvaginal ultrasound (TVU) cervical length (CL) for spontaneous onset of labour in singleton gestation enrolled at term by a meta-analysis.Search strategy We performed a literature search in electronic databases. Selection criteriaWe included only studies assessing the accuracy of TVU CL in prediction of spontaneous onset of labour in singleton gestations with vertex presentation who were enrolled at term.Data collection and analysis The primary outcome was the accuracy of CL for prediction of spontaneous labour within 7 days. Pooled sensitivities and specificities were calculated.Main results Five studies including 735 singleton gestations were included. For the prediction of spontaneous labour within 7 days for CL <30 mm the pooled sensitivity was 64% and pooled specificity was 60%. The higher the CL, the better the sensitivity; the lower the CL, the better the specificity. A woman with a singleton gestation at term and a TVU CL of 30 mm has a <50% chance of delivering within 7 days, while one with a TVU CL of 10 mm has an over 85% chance of delivery within 7 days.Conclusions TVU CL at term has moderate value in predicting the onset of spontaneous labour. A woman with a TVU CL of 10 mm or less has a high chance of delivering within a week.Tweetable abstract Cervical length at term has moderate value in predicting the onset of spontaneous labour.

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“…[16][17][18][19]29 Table 1 shows the characteristics of the included studies. In all, 735 women were analysed.…”

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

Section: Study Selection and Study Characteristicsmentioning

confidence: 99%

“…[15][16][17][18][19] The aim of this meta-analysis is to evaluate the accuracy of TVU CL in the prediction of spontaneous onset of labour within 7 days in singleton gestations at term.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Transvaginal ultrasound cervical length for prediction of spontaneous labour at term: a systematic review and meta‐analysis

Saccone

Simonetti

Berghella

2015

BJOG

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“…Previous studies regarding the detection of labor onset by ultrasonography or by cervical length only did exclude women that had a previous history of cesarean section 12-15. With the popularity of 3D ultrasounds, it is possible to more easily and precisely measure cervical volume 16, 17.…”

Section: Discussionmentioning

confidence: 99%

Clinical Efficacy of Cervical Length and Volume for Prediction of Labor Onset in VBAC Candidates

Jo¹,

Lee²,

Kim³

et al. 2012

Int. J. Med. Sci.

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Background: The purpose of this research is to discover whether measurement of cervical length and cervical volume at term is helpful in predicting the onset of labor in VBAC candidates.Methods: Transvaginal sonographic evaluations of the cervixes of pregnant women who desired to undergo VBAC were performed between 36 - 40 weeks gestation. Clinical information such as labor onset time, gestational age at delivery and delivery mode was gathered from medical records.Results: A total of 514 pregnant women participated in this study. Cervical length was significantly longer in the group that delivered 7 days or more after measurement than in the group that delivered within 7 days of measurement (43±0.77 cm vs. 2.99±0.72 cm, p< 0.001). Cervical volume was significantly larger in the group that delivered at and after 7 days than in the group that delivered within 7 days (29.21±11.62 cm3 vs. 34.07±13.41 cm3, p=0.014). The cervical length ROC curve was significantly more predictive than the cervical volume ROC curve (AUC: 0.711 vs 0.594, p= 0.001). There were no significant differences between the combined cervical length/volume ROC curve and the cervical length ROC curve alone (p= 0.565). The AUC of the cervical length ROC curve to predict postterm pregnancy was 0.729.Conclusion: Measuring cervical length is helpful in predicting the onset of spontaneous labor within 7 days and posterm delivery in VBAC candidates.

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The secret cervix

Rozenberg

2008

Ultrasound in Obstet & Gyne

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Cervical length and the risk of spontaneous labor at term

Cited by 12 publications

References 11 publications

Transvaginal ultrasound cervical length for prediction of spontaneous labour at term: a systematic review and meta‐analysis

Transvaginal ultrasound cervical length for prediction of spontaneous labour at term: a systematic review and meta‐analysis

Clinical Efficacy of Cervical Length and Volume for Prediction of Labor Onset in VBAC Candidates

The secret cervix

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