DOI: http://dx.doi.org/10.18203/2320-1770.ijrcog20210776

Prediction of success of induction of labour: Bishop’s score versus transvaginal sonographic parameters

Papa Dasari, Sutharshika Thiyagalingam

Abstract


Bishop’s score is a standard method of pre-induction assessment of parameters to predict induction of labour. It is subjective and has interobserver variability and it does not take in to account the supra-vaginal cervix which forms more than 50% of cervical length. During the past 3 decades studies undertaken to find out a better predictor of labour induction found ultrasonographic assessment of cervix to be a better method. Cervical length, posterior cervical angle and head position are some of the parameters that were studied and compared with Bishops score. Among these posterior cervical angles of >1100 and cervical length of <2 cm are the best predictors for success of induction of labour. These parameters would help to explain the chances of vaginal delivery and the risk of undergoing caesarean section in an objective way.

 


Keywords


Bishop’s score, Cervical length, Posterior cervical angle, Head position, Successful labour induction

Full Text:

PDF

References


Zhang J, Yancey MK, Henderson CE. U.S. national trends in labor induction, 1989-1998. J Reprod Med. 2002;47(2):120-4.

Seyb ST, Berka RJ, Socol ML, Dooley SL. Risk of cesarean delivery with elective induction of labor at term in nulliparous women. Obstet Gynecol. 1999;94(4):600-7.

Yeast JD, Jones A, Poskin M. Induction of labor and the relationship to cesarean delivery: A review of 7001 consecutive inductions. Am J Obstet Gynecol. 1999;180 (3 Pt 1):628-33.

Vrouenraets FPJM, Roumen FJME, Dehing CJG, Van den Akker ESA, Aarts MJB, Scheve EJT. Bishop Score and Risk of Cesarean Delivery After Induction of Labor in Nulliparous Women: Obstet Gynecol. 2005;105(4):690-7.

Bishop Edward H. Pelvic scoring for elective induction. Obstet Gynecol. 1964;24:266-8.

Roman H, Verspyck E, Vercoustre L, Degre S, Col JY, Firmin JM et al. Does ultrasound examination when the cervix is unfavorable improve the prediction of failed labor induction? Ultrasound Obstet Gynecol Off J Int Soc Ultrasound Obstet Gynecol. 2004;23(4):357-62.

Rozenberg P. Intravaginal ultrasonography of the uterine cervix: hope in the Compaign against premature births. J Radiol. 1999;80;(5):421-9.

Gómez Laencina AM, Sánchez FG, Gimenez JH, Martínez MS, Valverde Martínez JA, Vizcaíno VM. Comparison of ultrasonographic cervical length and the Bishop score in predicting successful labor induction. Acta Obstet Gynecol Scand. 2007;86(7):799-804.

Pandis GK, Papageorghiou AT, Ramanathan VG, Thompson MO, Nicolaides KH. Preinduction sonographic measurement of cervical length in the prediction of successful induction of labor. Ultrasound Obstet Gynecol. 2001;18(6):623-8.

O’Leary J, Ferell R. Comparison of Ultrasonographic and digital cervical assessment. Obstet Gynecol. 1986;68:718-9.

Crane JM. Factors predicting labour induction success. a critical analysis. Clin Obstet Gynaecol. 2006;49(3):573-84.

Pandis GK, Papageorghiou AT, Otigbah CM, Howard RJ, Nicolaides KH. Randomized study of vaginal misoprostol (PGE (1)) and dinoprostone gel (PGE (2)) for induction of labor at term. Ultrasound Obstet Gynecol. 2001;18(6):629-35.

Gabriel R, Darnaud T, Chalot F, Gonzalez N, Leymarie F, Quereux C. Transvaginal sonography of the uterine cervix prior to labor induction. Ultrasound Obstet Gynecol. 2002;19(3):254-7.

Ware V, Raynor BD. Transvaginal ultrasonographic cervical measurement as a predictor of successful labor induction. Am J Obstet Gynecol. 2000;182(5):1030-2.

Bastani P, Hamdi K, Abasalizadeh F, Pourmousa P, Ghatrehsamani F. Transvaginal sonography compared with Bishop Score for predicting caesarean section after induction of labour. Int J Women’s Health. 2011;3:277-80.

Rozenberg P, Chevret S, Chastang C, Ville Y. Comparison of digital and ultrasonographic examination of the cervix in predicting time interval from induction to delivery in women with a low Bishop score. BJOG Int J Obstet Gynaecol. 2005;112(2):192-6.

Tan PC, Vallikkannu N, Suguna S, Quek KF, Hassan J. Transvaginal sonographic measurement of cervical length vs. Bishop score in labor induction at term: tolerability and prediction of Cesarean delivery. Ultrasound Obstet Gynecol Off J Int Soc Ultrasound Obstet Gynecol. 2007;29(5):568-73.

Rane SM, Guirgis RR, Higgins B, Nicolaides KH. The value of ultrasound in the prediction of successful induction of labor. Ultrasound Obstet Gynecol Off J Int Soc Ultrasound Obstet Gynecol. 2004;24(5):538-49.

Strobel E, Sladkevicius P, Rovas L, De Smet F, Karlsson ED, Valentin L. Bishop score and ultrasound assessment of the cervix for prediction of time to onset of labor and time to delivery in prolonged pregnancy. Ultrasound Obstet Gynecol. 2006;28(3):298-305.

Park KH, Kim SN, Lee SY, Jeong EH, Jung HJ, Oh KJ. Comparison between sonographic cervical length and Bishop score in preinduction cervical assessment: a randomized trial. Ultrasound Obstet Gynecol Off J Int Soc Ultrasound Obstet Gynecol. 2011;38(2):198-204.

Bartha JL, Romero-Carmona R, Martínez-del-Fresno P, Comino-Delgado R. Bishop score and transvaginal ultrasound for preinduction cervical assessment: a randomized clinical trial: Bishop score and TVS for preinduction cervical assessment. Ultrasound Obstet Gynecol. 2005;25(2):155-9.

Chandra S, Crane JM, Hutchens D, Young DC. Transvaginal ultrasound and digital examination in predicting successful labor induction. Obstet Gynecol. 2001;98(1):2-6.

Rizwana Habib Kant, Aquisa Bashir, Shruti Gupta. Study of Transvaginal Sonographic Assessment of Cervix in Predicting the Success of Labour Induction in Nulliparous Women www.jkscience.org. 2016.;18 (1):6-11.

Nikbakht R, Hemadi M. Transvaginal cervical length and Bishop score value in predicting successful labor induction with an emphasis on the parity Int J Pharmaceut Res Allied Sciences, 2016, 5(2):114-118

Faza MA. Sonographic assessment of the cervical length before induction of labor December 2012. Asian Pacific J Reproduction. 2012;1(4):253-7.

Groeneveld YJ, Bohnen AM, Van Heusden AM. Cervical length measured by transvaginal ultrasonography versus Bishop score to predict successful labour induction in term pregnancies. Facts Views Vis Obgyn. 2010;2(3):187-193.

Paterson-Brown S, Fisk NM, Edmonds DK, Rodeck CH. Preinduction cervical assessment by Bishop’s score and transvaginal ultrasound. Eur J Obstet Gynecol Reprod Biol. 1991;40(1):17-23.

Bastani P, Hamdi K, Abasalizadeh F, Pourmousa P, Ghatrehsamani F. Transvaginal ultrasonography compared with Bishop score for predicting cesarean section after induction of labor. Int J Womens Health. 2011;3:277-80.

Boozarjomehri F, Timor-Tritsch I, Chao CR, Fox HE. Transvaginal ultrasonographic evaluation of the cervix before labor: presence of cervical wedging is associated with shorter duration of induced labor. Am J Obstet Gynecol. 1994;171(4):1081-7.

Khazardoost S, Ghotbizadeh Vahdani F, Latifi S, Borna S, Tahani M, Rezaei MA, Shafaat M. Pre-induction translabial ultrasound measurements in predicting mode of delivery compared to bishop score: a cross-sectional study. BMC Pregnancy Childbirth. 2016 Oct 28;16(1):330.

Keepanasseril A, Suri V, Bagga R, Aggarwal N. Pre-induction sonographic assessment of the cervix in the prediction of successful induction of labour in nulliparous women. Aust N Z J Obstet Gynaecol. 2007;47(5):389-93.

Peregrine E, O’Brien P, Omar R, Jauniaux E. Clinical and ultrasound parameters to predict the risk of cesarean delivery after induction of labor. Obstet Gynecol. 2006;107(2 Pt 1):227-33.

Gokturk U, Cavkaytar S, Danısman N. Can measurement of cervical length, fetal head position and posterior cervical angle be an alternative method to Bishop score in the prediction of successful labor induction? J Matern-Fetal Neonatal Med Off J Eur Assoc Perinat Med Fed Asia Ocean Perinat Soc Int Soc Perinat Obstet. 2014;1-6.

Boozarjomehri F, Timor-Tritsch I, Chao CR, Fox HE. Transvaginal ultrasonographic evaluation of the cervix before labor: presence of cervical wedging is associated with shorter duration of induced labor. Am J Obstet Gynecol. 1994;171(4):1081-7.

Hatfield AS, Sanchez-Ramos L, Kaunitz AM. Sonographic cervical assessment to predict the success of labor induction: a systematic review with metaanalysis. Am J Obstet Gynecol. 2007;197(2):186-92.

Verhoeven CJM, Rückert MEPF, Opmeer BC, Pajkrt E, Mol BWJ. Ultrasonographic fetal head position to predict mode of delivery: a systematic review and bivariate meta-analysis. Ultrasound Obstet Gynecol Off J Int Soc Ultrasound Obstet Gynecol. 2012;40(1):9-13.