Comparison of Cervical Length Measured by Transvaginal Ultrasonography and Bishop Score in Predicting Response to Labor Induction

Khandelwal, Ronak; Patel, Pooja; Pitre, Dipa; Sheth, Tosha; Maitra, Nandita

doi:10.1007/s13224-017-1027-y

Cited by 18 publications

(19 citation statements)

References 7 publications

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“…It was mentioned in their study that a cervical length cutoff of 27 mm would be favorable for successful induction. However, the results of some studies have contrasted with our study results; Khandelwal et al found that preinduction cervical length measurement was not associated with the induction-to-delivery success rate [24]. The differences in results may be due to the different definitions of successful induction, as some studies defined successful induction as delivery within 24 h. Meanwhile, the proficiency of the use of transvaginal ultrasound by each independent examiner may contribute to the difference in results, as a measurement of cervical length at term pregnancy tends to be more difficult as the fetus's head engages.…”

Section: Discussioncontrasting

confidence: 99%

The Association between Cervical Length and Successful Labor Induction: A Retrospective Cohort Study

Tsui

Ding

2023

IJERPH

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This study aimed to determine whether transvaginal sonographic measurement of cervical length before labor induction can predict successful induction. This retrospective study recruited 138 pregnant women who underwent labor induction at 37–41 weeks of gestation. Cervical length was measured using transvaginal ultrasonography before labor induction. Labor was induced according to the hospital protocol. Age, gestational age (GA), parity, body mass index (BMI), Bishop score, hemoglobin level, maternal disease, and epidural anesthesia were also recorded. Labor induction outcomes, including cesarean section for failed induction, time of induction, and the three labor stages, were assessed. From December 2018 to December 2021, 138 women were recruited for our study, including 120 and 18 women with successful and failed labor induction, respectively. Shorter cervical length (≤3.415 cm, OR = 6.22, 95% CI = 1.75–22.15) and multiparity (OR = 17.69, 95% CI = 2.94–106.51) were associated with successful induction. Higher BMI was associated with failed induction (OR = 0.87, 95% CI = 0.75–0.99). Age, GA, Bishop score, and fetal birth weight were not associated with successful labor induction. The ROC curve showed a cervical length cutoff value of 3.415 cm, revealing 76.8% of the area under the curve. In conclusion, a shorter cervical length (≤3.415 cm) was associated with a higher chance of successful labor induction (76.8%). This parameter might be used to predict the chance of successful labor induction. This information could help better inform clinician discussions with pregnant women concerning the chance of successful labor induction and consequent decision-making. Nevertheless, further large-scale clinical trials are warranted.

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Section: Discussioncontrasting

confidence: 99%

The Association between Cervical Length and Successful Labor Induction: A Retrospective Cohort Study

Tsui

Ding

2023

IJERPH

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“…17 76±0.32 cm. This was comparable with the study done by Balaji et al where 55 cases had induction-active phase interval <12 hours which had mean Bishop score 4.6±0.7 and mean cervical length 2.4±0.3cm 19. Seventyfour cases had induction delivery interval <24 hours which had mean Bishop score 4.1±1 and mean cervical length 2.5±0.4 cm.…”

supporting

confidence: 89%

Study of pre induction transvaginal ultra-sonographic cervical length and its comparison with bishop score in predicting successful labor induction

Khajotia

Sharma

Khichar

et al. 2021

Int J Reprod Contracept Obstet Gynecol

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Background: Induction of labor means initiation of uterine contraction, after period of viability by any method (medical, surgical or combined) before spontaneous onset of labor for the purpose of vaginal delivery. The condition of cervix or favorability is important for successful labor induction. Assessment of cervix has been used as a predictor of successful vaginal delivery. Induction of labor carried out in approximately 20% of all pregnancies. Aim and objectives of the current study were to compare the predictive value of trans-vaginal ultra-sonographic measurement of cervical length versus Bishop score prior to induction of labor in predicting the mode of delivery and maternal and fetal outcome.Methods: This prospective observational study was conducted in the department of obstetrics and gynecology, Sardar Patel medical college and associated group of hospitals, Bikaner between February to November 2020. Study group included 100 pregnant women in which induction of labor was performed at 37-42 weeks of gestation.Results: Bishop Score appears to be a better predictor than the cervical length with sensitivity of 1.00 and a specificity of 0.12 compared to 0.52 and 1.00 respectively. In the receiver operating characteristic curves, the cut-off point for the prediction of successful induction taken was 2.6 cm cervical length and >4 for the bishop score.Conclusions: TVS cervical length could be used as alternative to Bishop score for prediction of successful labor induction in the sitting where the appropriate equipment and expertise are available. Bishop score and TVS cervical length both are good predictors of successful induction of labor.

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“…Although the latter study considered the ability to induce active labour as the primary outcome. 2 Rane SM et al found TVS cervical length and parity were independent predictors of vaginal delivery within 24 hours; however the only indicator for induction of labour was prolonged pregnancy. 10 Tan PC et al in 2007 observed that TVS was better tolerated than Bishop Score but both are useful predictors of the need for caesarean section following induction of labour.…”

Section: Discussionmentioning

confidence: 98%

A study of preinduction transvaginal ultrasonographic cervical length and its comparison with bishop score in predicting successful labour

Kaur¹,

Garg²,

Kaur³

et al. 2019

Int J Reprod Contracept Obstet Gynecol

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Background: Significant number of induced pregnancies land in caesarean delivery. Cervical assessment is integral to successful outcome of induction of labour. Objective of this study was to study preinduction transvaginal ultrasonographic cervical length and to compare it with Bishop Score in predicting successful labour.Methods: This prospective study was conducted at the department of obstetrics and gynaecology, MMIMSR, Mullana, Ambala on 150 patients. A total of 150 women were studied from January 2015 to June 2016 after taking an informed consent. The sociodemographic particulars were recorded, detailed history was taken and examination performed. Transvaginal ultrasound was done to assess cervical length after evacuation of bladder. Bishop score was then determined by separate observer. The occurrence of vaginal delivery was considered as primary outcome. All statistics collected were entered in statistical software SPSS-15. ROC curves were constructed for both Bishop Score and TVS.Results: The mean gestational age was 38 week 6 days, majority 134 (89.3%) being less than 40 weeks of gestation. The ROC curve for Bishop Score demonstrated better predictability compared to cervical length by TVS. Optimized cut off for Bishop score in addition to TVS was determined by ROC curve to predict successful vaginal delivery, it was ≥ 6 for Bishop score (sensitivity 90.7%, specificity 68.6%, positive predictive value 91.5% and negative predictive value 66.7%) and ≤ 3.0 cm for cervical length on TVS (sensitivity 74.6%, specificity 51.6%, positive predictive value 74.5% and negative predictive value 51.6%). The relation of both cervical length and Bishop score with successful vaginal delivery was found to be statistically significant with p value of 0.0001.Conclusions: The present study indicates that Bishop Score is a better predictor for successful vaginal delivery as compared to cervical length by transvaginal ultrasonography.

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Comparison of Cervical Length Measured by Transvaginal Ultrasonography and Bishop Score in Predicting Response to Labor Induction

Abstract: The Bishop score was superior in predicting the response to induction as compared to the cervical length measured by transvaginal ultrasonography.

Cited by 18 publications

References 7 publications

The Association between Cervical Length and Successful Labor Induction: A Retrospective Cohort Study

The Association between Cervical Length and Successful Labor Induction: A Retrospective Cohort Study

Study of pre induction transvaginal ultra-sonographic cervical length and its comparison with bishop score in predicting successful labor induction

A study of preinduction transvaginal ultrasonographic cervical length and its comparison with bishop score in predicting successful labour

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