Longitudinal examination of cervical volume and vascularization changes during the antepartum and postpartum period using three-dimensional and power Doppler ultrasound

Yilmaz, Nur Cansu; Yiğiter, Alin Başgül; Kavak, Zehra Neşe; Durukan, Birol; Gökaslan, Hüsnü

doi:10.1515/jpm.2010.087

Cited by 10 publications

(19 citation statements)

References 14 publications

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“…In a recent study, no statistically significant changes in cervical volume were found between 1st and 2nd trimester 10. But that study was conducted in the late 1st trimester (11-14 weeks), whereas our study was conducted earlier in the 1st trimester (9 -13 weeks).…”

Section: Discussioncontrasting

confidence: 78%

“…Recently, there have been attempts to increase the accuracy of the prediction rate of preterm birth not only by measuring the cervical length via the conventional 2D transvaginal ultrasound but also by calculating the cervical volume using the 3D transvaginal ultrasound 13, 14. In spite of great efforts, many studies do not show that the cervical volume is more significant than the cervical length 10, 13-15.…”

Section: Discussionmentioning

confidence: 99%

“…However, many studies which research cervical changes during pregnancies, often use 2D ultrasound 1, 8, 9. Although there have been a number of recent studies using 3D ultrasound to determine cervical volume 10, 11, this number may be considered insufficient.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Cervical Parameters by Three-Dimensional Ultrasound according to Parity and Previous Delivery Mode

Jo¹,

Jang²,

Kim³

et al. 2011

Int. J. Med. Sci.

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Background: We would like to find out that whether the patient's parity, previous delivery mode and previous labor could influence cervical parameters. Cervical length, volume and width were measured using two-dimensional (2D) and three-dimensional (3D) transvaginal ultrasound on normal pregnant women.Method: This study was conducted between January 2009 and December 2010 in singleton pregnant women who were admitted for routine antenatal care at hospitals in affiliation with the Catholic University, Seoul, Korea. The study group was classified by parity (nullipara and multipara) and previous delivery mode (cesarean section group and vaginal delivery group). The previous cesarean section group was divided by elective group who did not undergo labor and labor group who underwent labor. Cervical parameters such as cervical length, volume and width were measured using 2D and 3D ultrasound examinations in the first and second trimesters and the results were analyzed between those groups mentioned above.Results: One hundred and twenty-one pregnant women in their 1st trimester and 233 pregnant women in their 2nd trimester (a total of 354) were enrolled in this study. Cervical parameters were not statistically significant from parity, nor previous delivery mode and previous labor in 1st trimester. Cervical volumes were not statistically significant from nullipara and elective cesarean section groups (35.96±9.81 vs. 34.73±9.75 cm3), but the nullipara groups were significantly lowered in the vaginal group (35.96±9.81 vs. 43.10±11.87 cm3) in 2nd trimester. For the nullipara group, cervical widths were not statistically significant in the elective cesarean section group but these were significantly lower than labor and previous vaginal group in the 2nd trimester.Conclusion: The cervical volume and width have an influence on parity, previous delivery mode and labor in the 2nd trimester.

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Section: Discussioncontrasting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Cervical Parameters by Three-Dimensional Ultrasound according to Parity and Previous Delivery Mode

Jo¹,

Jang²,

Kim³

et al. 2011

Int. J. Med. Sci.

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show abstract

“…The cervix also undergoes changes in mass, volume, length, and alignment with the uterine axis. Studies suggest that the changes in cervical volume occur mainly during the first half of pregnancy [23], and begin as early as the first trimester [24]. Recent 3D ultrasound measurements show an increase in cervical volume from 15.5 cm 3 to 29 cm 3 in the first trimester [24] and a modest increase to 32.1 cm 3 by 32-34 weeks [24].…”

Section: Geometricmentioning

confidence: 99%

“…Studies suggest that the changes in cervical volume occur mainly during the first half of pregnancy [23], and begin as early as the first trimester [24]. Recent 3D ultrasound measurements show an increase in cervical volume from 15.5 cm 3 to 29 cm 3 in the first trimester [24] and a modest increase to 32.1 cm 3 by 32-34 weeks [24]. Ultrasound studies have shown significant correlation between cervical length and cervical volume [25].…”

Section: Geometricmentioning

confidence: 99%

System-Level Biomechanical Approach for the Evaluation of Term and Preterm Pregnancy Maintenance

Mahmoud

Johnson

Chien

et al. 2013

Journal of Biomechanical Engineering

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Preterm birth is the primary contributor to perinatal morbidity and mortality, with those born prior to 32 weeks disproportionately contributing compared to those born at 32-37 weeks. Outcomes for babies born prematurely can be devastating. Parturition is recognized as a mechanical process that involves the two processes that are required to initiate labor: rhythmic myometrial contractions and cervical remodeling with subsequent dilation. Studies of parturition tend to separate these two processes rather than evaluate them as a unified system. The mechanical property characterization of the cervix has been primarily performed on isolated cervical tissue, with an implied understanding of the contribution from the uterine corpus. Few studies have evaluated the function of the uterine corpus in the absence of myometrial contractions or in relationship to retaining the fetus. Therefore, the cervical-uterine interaction has largely been neglected in the literature. We suggest that a system-level biomechanical approach is needed to understand pregnancy maintenance. To that end, this paper has two main goals. One goal is to highlight the gaps in current knowledge that need to be addressed in order to develop any comprehensive and clinically relevant models of the system. The second goal is to illustrate the utility of finite element models in understanding pregnancy maintenance of the cervical-uterine system. The paper targets an audience that includes the reproductive biologist/clinician and the engineer/physical scientist interested in biomechanics and the system level behavior of tissues.

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Women's Obstetric History and Midtrimester Cervical Length Measurements by 2D/3D and Doppler Ultrasound

Marinelli

Filho

Barros

et al. 2020

Rev Bras Ginecol Obstet

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Objective The aim of the present study was to compare the obstetric history and both two- and tri-dimensional ultrasound parameters according to different cervical lengths. Methods The present cross-sectional study analyzed 248 midtrimester pregnant women according to cervical length and compared the data with the obstetric history and 2D/3D ultrasound parameters. Patients were divided into 3 groups according to cervical length: The Short Cervix group for cervical lengths ≥ 15 mm and < 25 mm (n = 68), the Very Short Cervix group for cervical lengths < 15 mm (n = 18) and the Control group, composed of 162 pregnant women with uterine cervical lengths ≥ 25 mm. Results When analyzing the obstetric history of only non-nulliparous patients, a significant association between the presence of a short cervix in the current pregnancy and at least one previous preterm birth was reported (p = 0.021). Cervical length and volume were positively correlated (Pearson coefficient = 0.587, p < 0.0001). The flow index (FI) parameter of cervical vascularization was significantly different between the Control and Very Short Cervix groups. However, after linear regression, in the presence of volume information, we found no association between the groups and FI. Uterine artery Doppler was also not related to cervical shortening. Conclusion The present study showed a significant association between the presence of a short cervix in the current pregnancy and at least one previous preterm birth. None of the vascularization indexes correlate with cervical length as an independent parameter. Uterine artery Doppler findings do not correlate with cervical length.

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Longitudinal examination of cervical volume and vascularization changes during the antepartum and postpartum period using three-dimensional and power Doppler ultrasound

Abstract: Cervical volume and vascularization parameters are not helpful in predicting preterm labor and gestational diabetes, but might be associated with pre-eclampsia.

Cited by 10 publications

References 14 publications

Comparison of Cervical Parameters by Three-Dimensional Ultrasound according to Parity and Previous Delivery Mode

Comparison of Cervical Parameters by Three-Dimensional Ultrasound according to Parity and Previous Delivery Mode

System-Level Biomechanical Approach for the Evaluation of Term and Preterm Pregnancy Maintenance

Women's Obstetric History and Midtrimester Cervical Length Measurements by 2D/3D and Doppler Ultrasound

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