Is transabdominal ultrasound scanning of cervical measurement in mid-trimester pregnancy a useful alternative to transvaginal ultrasound scan?

Chaudhury, Kalyansree; Ghosh, Mrinalkanti; Halder, Atin; Senapati, Sourav; Chaudhury, Sudeshna

doi:10.5152/jtgga.2013.00378

Cited by 11 publications

(14 citation statements)

References 13 publications

(11 reference statements)

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“…It has been reported that using a TACL with a >35‐mm cutoff would result in up to 40% of women avoiding TVU 19 . In our cohort, 89% of women did not require a TVCL using the same cutoff, which may benefit women of those cultures with a high number of women who decline TVU 22 . Informed consent is required to conduct all ultrasound examinations 23 .…”

Section: Educationmentioning

confidence: 74%

The perceptions of pregnant women about cervical length screening for preterm birth prevention

Pedretti

Dickinson

Doherty

2021

Aust NZ J Obst Gynaeco

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Background The Western Australian Preterm Birth Prevention Initiative was officially launched in November 2014. It demonstrated an initial decrease in the preterm birth rate in Western Australia. One of the key points of this initiative is the routine ultrasound measurement of the cervical length in mid‐pregnancy. Aim The aim of this study was to evaluate the perceptions and attitudes of Western Australian women regarding transvaginal cervical length (TVCL) screening for preterm birth prevention. Materials and methods Self‐administered questionnaires were completed by pregnant women before and after their mid‐trimester obstetric ultrasound. Maternal demographical and medical data were collected in addition to opinions of TVCL screening. Results A total of 598 women participated with the maternal age range representative of the Western Australian obstetric population. There was a high rate of acceptance of TVCL imaging, with 2% of the 149 women declining a transvaginal ultrasound (TVU) offered in this study, 1.5% refusing a TVU in the past and 5.7% reporting that they would have a concern in having a TVU in the future. Women stated that they either had declined TVCL in the past (11%) or would decline in the future (30.7%) as they wanted to discuss the procedure with their clinician first, had been advised not to have a TVU by their clinician (11% in the past and 47.7% in the future) or felt uncomfortable with the operator (22% at a previous TVU and 34.4% in the future). Conclusion Pregnant women participating in this study had a high acceptance of TVCL screening for preterm birth prevention.

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Section: Educationmentioning

confidence: 74%

The perceptions of pregnant women about cervical length screening for preterm birth prevention

Pedretti

Dickinson

Doherty

2021

Aust NZ J Obst Gynaeco

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“…[37,38] Bladder fullness also can impact transabdominal CL. [39] In some studies, when measuring CL, transabdominal measurement does not reflect the transvaginal measurement accurately. [40,41] Thus, when assessing cervical stiffness, the cervix condition may be affected by the compression of bladder fullness.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic accuracy of cervical elastography in predicting preterm delivery

et al. 2019

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Background: The aim of the study was to evaluate the diagnostic accuracy of cervical elastography in predicting preterm delivery (PTD). Methods: We searched the PubMed, EMBASE, and Cochrane databases to identify relevant studies that applied ultrasound (US) elastography to assess cervical stiffness and predict PTD. All the studies were published before December 11, 2018, and only studies published in English were collected. The cervical length (CL) was considered a comparator, and the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) tool was applied to assess the quality of the included studies. Summary receiver operating characteristic (SROC) modeling was performed to evaluate the diagnostic performance of cervical elastography in predicting PTD. Subgroup analyses were also performed. Results: Seven studies, including 1488 pregnant women, were included in this meta-analysis. Cervical elastography showed a summary sensitivity of 0.84 [95% confidence interval (CI): 0.68, 0.93], a specificity of 0.82 (95% CI: 0.63, 0.93), a diagnostic odds ratio of 25 (95% CI: 7, 93), and an area under the curve (AUC) of SROC of 0.90 (95% CI: 0.87–0.93). CL measurement showed that the AUC of SROC was 0.60 (95% CI: 0.56–0.64). The results of subgroup analysis showed that the summary sensitivity and specificity were different in the QUADAS-2 score subgroups. Conclusion: Cervical elastography is a promising and reliable method to predict PTD. Cervical elastography showed better diagnostic performance to predict PTD than CL measurement.

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“…Prior studies have suggested that an empty bladder prohibits visualization of the cervix on TA ultrasound or that a full bladder falsely elongates the cervix. 16,17 We did not find a significant difference in the test characteristics of TA ultrasound to detect short cervix based on the deepest vertical pocket of urine in the bladder. However, it is important to consider that our study included only patients in whom a TA cervical length could be measured.…”

Section: Discussionmentioning

confidence: 61%

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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Is transabdominal ultrasound scanning of cervical measurement in mid-trimester pregnancy a useful alternative to transvaginal ultrasound scan?

Cited by 11 publications

References 13 publications

The perceptions of pregnant women about cervical length screening for preterm birth prevention

The perceptions of pregnant women about cervical length screening for preterm birth prevention

Diagnostic accuracy of cervical elastography in predicting preterm delivery

Can Transabdominal Cervical Length Measurement Exclude Short Cervix?

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