Comparison of Cervical Lengths Using Transabdominal and Transvaginal Sonography in Midpregnancy

Roh, Hyun-Jin; Ji, Yong; Jung, Chul Hoi; Jeon, Gyun-Ho; Chun, Sungwook; Cho, Hyun Jin

doi:10.1097/01.ogx.0000445771.22049.b2

Cited by 5 publications

(7 citation statements)

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“…Our findings were keeping in line with findings of other similar studies 8,11,13,14 . Spearman correlation coefficient demonstrated a positive association between all three measurements.…”

Section: Discussionsupporting

confidence: 94%

Evaluation of cervical length by transabdominal and transvaginal scans during early pregnancy.

Ruwanpura

Wickramasinghe

Marasinghe

et al. 2021

Sri Lanka J Obstet & Gynae

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Objective: To compare the measurements and the client-preferences of transabdominal scan (TAS) and transvaginal scan (TVS) in assessing cervical length.Method: A validation study with a cross sectional component on patient-preferences was conducted among 568 pregnant women with a period-of-amenorrhoea between 11+0 to 22+6 weeks. Pre-and post-void TAS and a post-void TVS measurements were taken. Receiver Operating Characteristics (ROC) curves were generated to assess the detection of short cervix using pre and post void TAS at different lengths of the cervix. Results:The mean (SD) age of the participants was 28.4 (5.7) years with a mean gestation age of 14+1 weeks. The mean (SD) cervical lengths detected by the pre-void TAS, post-void TAS and TVS were 32.2 (5.8) mm, 28.9 (5.8) mm and 34.4 (5.3) mm respectively. Factors with significant association with a higher TVS cervical length were; increasing age (p<0.001), higher gravidity (p<0.001), higher parity (p<0.001) and higher number of vaginal deliveries (p<0.001). The TAS and TVS measurements significantly correlated with each other (p<0.001).Post-void TAS could not obtain measurement in 49.47% of attempts. The shortest cervical length can be detected by pre-void TAS was 26mm with a ideal cut-off of 33 mm. For post-void TAS the shortest length was 28 mm with an ideal cut-off of 28.16mm. Majority preferred TAS over TVS. Conclusion:Pre-void TAS can predict a cervical length of 26mm or less with 87.5% sensitivity whereas the shortest length predicted by post-void is relatively longer. Nearly in half, a valid post-void TAS could not be recorded. Client preference was more favourable for TAS.

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“…Our findings were keeping in line with findings of other similar studies 8,11,13,14 . Spearman correlation coefficient demonstrated a positive association between all three measurements.…”

Section: Discussionsupporting

confidence: 94%

Evaluation of cervical length by transabdominal and transvaginal scans during early pregnancy.

Ruwanpura

Wickramasinghe

Marasinghe

et al. 2021

Sri Lanka J Obstet & Gynae

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“…[19][20][21] Likewise, one study reported that measurements obtained through TAUS are 8 mm longer on average than those obtained through TVUS, whereas another study showed excellent correlation between the 2 techniques. 22,23 In the setting of such a discrepancy, it is probably most prudent to either forego TAUS for this purpose or to have a low threshold to follow-up with TVUS if the measurement obtained abdominally is <30 mm.…”

Section: The Techniquementioning

confidence: 98%

Measuring the Cervical Length

Markham

Iams²

2016

Clinical Obstetrics &Amp; Gynecology

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An important step toward the goal of eradicating spontaneous preterm birth was achieved with the advent of cervical sonography, a tool that advanced our knowledge of the entity of preterm parturition, improved our ability to detect women at risk for early delivery, and allowed us to prevent some of these premature births. We will describe here the correct technique for obtaining such measurements and will review the literature regarding the use of this tool in specific pregnant populations.

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“…Roh et al and Stone et al both found no difference in mean cervical lengths between TA and TV measurements. 12,13 They found that TA cervical lengths consistently measured shorter than the TV measurements in cases with discrepancies. In contrast, Hernandez-Andrade et al found that only 43% of women with a short cervix on TV ultrasound were correctly identified by TA ultrasound and that TA ultrasound overestimated the cervical length in women with a short cervix.…”

Section: Discussionmentioning

confidence: 98%

Can Transabdominal Cervical Length Measurement Exclude Short Cervix?

et al. 2015

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Objectives: To evaluate the discrepancies between transabdominal and transvaginal sonographic measurements of the cervix in singleton and twin pregnancies and to assess whether maternal weight influences these discrepancies. Methods: A prospective cohort study. Transabdominal and transvaginal cervical lengths measurements were obtained before and after voiding (respectively) in pregnant women between 14 and 25 weeks of gestation. Measurements were compared between singleton and twin pregnancies and correlated with maternal age, and BMI. Statistical analysis was performed in order to determine a transabdominal cervical length cutoff with 100% confidence for transvaginal cervical length above 30mm. Results: 52 pairs of twin pregnancies and 388 singleton pregnancies were included. The mean cervical length measured abdominally for twin and singleton pregnancies was 35.6 ± 5.3mm and 36.8 ± 6.9mm respectively. The mean cervical length measured vaginally was 40.3 ± 6.6mm and 42.2 ± 7.2mm. The average discrepancy between the two methods was 4.7mm in twin pregnancies and 5.4mm in singleton. Abdominal cervix measurements correlated with vaginal measurements and were consistently shorter. The discrepancy between abdominal and vaginal measurements did not correlate with singleton or twin pregnancies, maternal body mass index or maternal age. All women with abdominal cervical length >35mm had a corresponding vaginal cervical length >30mm. Conclusions: The use of abdominal measurement of cervical length could be an effective initial tool for cervical length screening in both singleton and twin pregnancies. Cervical length of >35mm could be used as a cutoff value that might make the vaginal measurement redundant in some cases. P01.02 The detection rates of shear wave speed in various uterine cervical regions during pregnancy and their determinant factors Objectives: To analyse detection rates of shear wave speed (SWS)-a quantitative parameter of tissue stiffness, in various cervical regions during pregnancy and their determinant factors. Methods: Subjects were 196 cases of normal singleton pregnancy at 14-37 weeks' gestation, cared for in our hospital between October 2016 and February 2017. SWS of the cervix was measured using transvaginal ultrasound equipment (Aplio 500, Toshiba). Samplings were taken at 14-17, 18-21, 22-25, 26-29, 30-33, 34-37 weeks from the anterior (A), cervical canal (C) and posterior (P) on sagittal sections of the cervix in the external and internal os (EO/IO) regions. On a colour-coded elastogram, the SWS of a circular region of interest (ROI) with a 5 mm diameter was used to calculate the mean and standard deviation. The measurement was considered adequate when total colour-staining in a circular ROI and/or the coefficient of variation of the SWS<30%. For each age-group, rates for detecting adequate measurements were compared between sampling points. Factors related to adequate measurement: circular ROI depth and the angle in degrees, between emitted direction of push pulse and cervical canal, were an...

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Comparison of Cervical Lengths Using Transabdominal and Transvaginal Sonography in Midpregnancy

Cited by 5 publications

References 0 publications

Evaluation of cervical length by transabdominal and transvaginal scans during early pregnancy.

Evaluation of cervical length by transabdominal and transvaginal scans during early pregnancy.

Measuring the Cervical Length

Can Transabdominal Cervical Length Measurement Exclude Short Cervix?

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