1. Canadian Institute for Health Information. Health indicators interactive tool. Ottawa: Canadian Institute for Health Information; 2012.
2. Canadian Institute for Health Information. QuickStats: childbirth indicators by place of residence. Ottawa: Canadian Institute for Health Information; 2017. https://apps.cihi.ca/mstrapp/asp/Main.aspx
3. Young CB, Liu S, Muraca GM, et al. Mode of delivery after a previous cesarean birth, and associated maternal and neonatal morbidity. CMAJ 2018;190:E556–64.
4. Smithies M, Woolcott CG, Brock JK, et al. Factors associated with trial of labour and mode of delivery in Robson group 5: a select group of women with previous Caesarean section. J Obstet Gynaecol Can 2018;40:704–11.
5. Russillo B, Sewitch MJ, Cardinal L, et al. Comparing rates of trial of labour attempts, VBAC success, and fetal and maternal complications among family physicians and obstetricians. J Obstet Gynaecol Can 2008;30:123–8.
6. Vaginal birth after Caesarean in Ontario. Ontario: 2018. http://www. ontarioprenataleducation.ca/vbac/
7. American College of Obstetricians and Gynecologists. ACOG practice bulletin no. 115: vaginal birth after previous cesarean delivery. Obstet Gynecol 2010;116:450–63. 8. Duan XH, Wang YL, Han XW, et al. Caesarean section combined with temporary aortic balloon occlusion followed by uterine artery embolisation for the management of placenta accreta. Clin Radiol 2015;70:932–7.
9. Committee on Practice Bulletins-Obstetrics. Practice bulletin no. 184: vaginal birth after cesarean delivery. Obstet Gynecol 2017;130:e217–33.
10. SOGC. Vaginal birth after previous Caesarean birth. Clinical practice guideline 1997;68.
11. National Institutes of Health. Cesarean childbirth. Am J Obstet Gynecol 1981;139:902–9.
12. Flamm BL, Lim OW, Jones C, et al. Vaginal birth after cesarean section: results of a multicenter study. Am J Obstet Gynecol 1988;158:1079–84.
13. Socol ML, Peaceman AM. Vaginal birth after cesarean: an appraisal of fetal risk. Obstet Gynecol 1999;93:674–9.
14. Martel MJ, MacKinnon CJ. Clinical Practice Obstetrics Committee of the Society of Obstetricians and Gynaecologists of Canada. Guidelines for vaginal birth after previous Caesarean birth. J Obstet Gynaecol Can 2004;26:660–83. quiz 84−6.
15. Martel MJ, MacKinnon CJ. Clinical Practice Obstetrics Committee of the Society of Obstetricians and Gynaecologists of Canada. Guidelines for vaginal birth after previous Caesarean birth. J Obstet Gynaecol Can 2005;27:164–88.
16. Kline J, Arias F. Analysis of factors determining the selection of repeated cesarean section or trial of labor in patients with histories of prior cesarean delivery. J Reprod Med 1993;38:289–92.
17. McMahon MJ. Vaginal birth after cesarean. Clin Obstet Gynecol 1998;41:369–81.
18. Canadian Task Force on the Periodic Health Exam. The Canadian guide to clinical preventive health care. Ottawa: Health Canada; 1994. p. xxxvii. https://canadiantaskforce.ca/wp-content/uploads/2016/09/1994-redbrick-en.pdf.
19. Roberts LJ, Beardsworth SA, Trew G. Labour following caesarean section: current practice in the United Kingdom. Br J Obstet Gynaecol 1994;101:153–5.
20. Norman P, Kostovcik S, Lanning A. Elective repeat cesarean sections: how many could be vaginal births? CMAJ 1993;149:431–5.
21. Biswas A. Management of previous cesarean section. Curr Opin Obstet Gynecol 2003;15:123–9.
22. Quilligan EJ. Vaginal birth after cesarean section: 270 degrees. J Obstet Gynaecol Res 2001;27:169–73.
23. Scott JR. Avoiding labor problems during vaginal birth after cesarean delivery. Clin Obstet Gynecol 1997;40:533–41.
24. Rageth JC, Juzi C, Grossenbacher H. Delivery after previous cesarean: a risk evaluation. Swiss Working Group of Obstetric and Gynecologic Institutions. Obstet Gynecol 1999;93:332–7.
25. Lovell R. Vaginal delivery after Caesarean section: factors influencing success rates. Aust N Z J Obstet Gynaecol 1996;36:4–8.
26. Davies GA, Hahn PM, McGrath MM. Vaginal birth after cesarean. Physicians’ perceptions and practice. J Reprod Med 1996;41:515–20.
27. Landon MB, Leindecker S, Spong CY, et al. The MFMU Cesarean Registry: factors affecting the success of trial of labor after previous cesarean delivery. Am J Obstet Gynecol 2005;193:1016–23.
28. Guise JM, Eden K, Denman MA, et al. Vaginal birth after cesarean: new insights. Rockville, MD: Agency for Healthcare Research and Quality; 2010.
29. Weinstein D, Benshushan A, Tanos V, et al. Predictive score for vaginal birth after cesarean section. Am J Obstet Gynecol 1996;174:192–8.
30. Srinivas SK, Stamilio DM, Sammel MD, et al. Vaginal birth after caesarean delivery: does maternal age affect safety and success? Paediatr Perinat Epidemiol 2007;21:114–20.
31. Bujold E, Gauthier RJ. Should we allow a trial of labor after a previous cesarean for dystocia in the second stage of labor? Obstet Gynecol 2001;98:652–5.
32. Hoskins IA, Gomez JL. Correlation between maximum cervical dilatation at cesarean delivery and subsequent vaginal birth after cesarean delivery. Obstet Gynecol 1997;89:591–3.
33. Shipp TD, Zelop CM, Repke JT, et al. Labor after previous cesarean: influence of prior indication and parity. Obstet Gynecol 2000;95:913–6.
34. Rossi AC, Prefumo F. Pregnancy outcomes of induced labor in women with previous cesarean section: a systematic review and meta-analysis. Arch Gynecol Obstet 2015;291:273–80.
35. Zelop CM, Shipp TD, Cohen A, et al. Trial of labor after 40 weeks’ gestation in women with prior cesarean. Obstet Gynecol 2001;97:391–3.
36. Zelop CM, Shipp TD, Repke JT, et al. Outcomes of trial of labor following previous cesarean delivery among women with fetuses weighing >4000 g. Am J Obstet Gynecol 2001;185:903–5.
37. Flamm BL, Goings JR. Vaginal birth after cesarean section: is suspected fetal macrosomia a contraindication? Obstet Gynecol 1989;74:694–7.
38. Sarno Jr AP, Phelan JP, Ahn MO, et al. Vaginal birth after cesarean delivery. Trial of labor in women with breech presentation. J Reprod Med 1989;34:831–3.
39. Elkousy MA, Sammel M, Stevens E, et al. The effect of birth weight on vaginal birth after cesarean delivery success rates. Am J Obstet Gynecol 2003;188:824–30.
40. Srinivas SK, Stamilio DM, Stevens EJ, et al. Safety and success of vaginal birth after cesarean delivery in patients with preeclampsia. Am J Perinatol 2006;23:145–52.
41. Mercer BM, Gilbert S, Landon MB, et al. Labor outcomes with increasing number of prior vaginal births after cesarean delivery. Obstet Gynecol 2008;111:285–91.
42. Rossi AC, D’Addario V. Maternal morbidity following a trial of labor after cesarean section vs elective repeat cesarean delivery: a systematic review with metaanalysis. Am J Obstet Gynecol 2008;199:224–31.
43. Grobman WA, Lai Y, Landon MB, et al. Development of a nomogram for prediction of vaginal birth after cesarean delivery. Obstet Gynecol 2007;109:806–12.
44. Chaillet N, Bujold E, Dube E, et al. Validation of a prediction model for vaginal birth after caesarean. J Obstet Gynaecol Can 2013;35: 119–24.
45. Costantine MM, Fox KA, Pacheco LD, et al. Does information available at delivery improve the accuracy of predicting vaginal birth after cesarean? Validation of the published models in an independent patient cohort. Am J Perinatol 2011;28:293–8.
46. Schoorel EN, Melman S, van Kuijk SM, et al. Predicting successful intended vaginal delivery after previous caesarean section: external validation of two predictive models in a Dutch nationwide registrationbased cohort with a high intended vaginal delivery rate. BJOG 2014;121:840–7. discussion 7.
47. Yokoi A, Ishikawa K, Miyazaki K, et al. Validation of the prediction model for success of vaginal birth after cesarean delivery in Japanese women. Int J Med Sci 2012;9:488–91.
48. Annessi E, Del Giovane C, Magnani L, et al. A modified prediction model for VBAC, in a European population. J Matern Fetal Neonatal Med 2016;29:435–9.
49. Eden KB, McDonagh M, Denman MA, et al. New insights on vaginal birth after cesarean: can it be predicted? Obstet Gynecol 2010;116:967–81.
50. Caesarean section. National Institute for Health and Clinical Excellence: guidance. London: National Institute for Health and Clinical Excellence; 2011.
51. Wen SW, Rusen ID, Walker M, et al. Comparison of maternal mortality and morbidity between trial of labor and elective cesarean section among women with previous cesarean delivery. Am J Obstet Gynecol 2004;191:1263–9.
52. Zwart JJ, Richters JM, Ory F, et al. Uterine rupture in The Netherlands: a nationwide population-based cohort study. BJOG 2009;116:1069–78. discussion 78−80.
53. Stattmiller S, Lavecchia M, Czuzoj-Shulman N, et al. Trial of labor after cesarean in the low-risk obstetric population: a retrospective nationwide cohort study. J Perinatol 2016;36:808–13.
54. Palatnik A, Grobman WA. Induction of labor versus expectant management for women with a prior cesarean delivery. Am J Obstet Gynecol 2015;212:358.e1−6.
55. Huisman C, Rengerink KO, Jozwiak M, et al. Effectiveness and safety of different methods for induction of labor in women with a previous cesarean section. Am J Obstet Gynecol 2014;210:S333–4.
56. West HM, Jozwiak M, Dodd JM. Methods of term labour induction for women with a previous caesarean section. Cochrane Database Syst Rev 2017(6):CD009792.
57. Cheng YW, Eden KB, Marshall N, et al. Delivery after prior cesarean: maternal morbidity and mortality. Clin Perinatol 2011;38:297–309.
58. Pickhardt MG, Martin Jr JN, Meydrech EF, et al. Vaginal birth after cesarean delivery: are there useful and valid predictors of success or failure? Am J Obstet Gynecol 1992;166:1811–5. discussion 5−9.
59. Rouse DJ, Owen J, Hauth JC. Active-phase labor arrest: oxytocin augmentation for at least 4 hours. Obstet Gynecol 1999;93:323–8.
60. Kehl S, Weiss C, Rath W. Balloon catheters for induction of labor at term after previous cesarean section: a systematic review. Eur J Obstet Gynecol Reprod Biol 2016;204:44–50.
61. Lamourdedieu C, Gnisci A, Agostini A. [Risk of uterine rupture after cervical ripening with ballon catheter on uterus with previous cesarean section]. J Gynecol Obstet Biol Reprod (Paris) 2016;45:496–501. [in French].
62. van Gelderen CJ, England MJ, Naylor GA, et al. Labour in patients with a caesarean section scar. The place of oxytocin augmentation. S Afr Med J 1986;70:529–32.
63. Kacmar J, Bhimani L, Boyd M, et al. Route of delivery as a risk factor for emergent peripartum hysterectomy: a case-control study. Obstet Gynecol 2003;102:141–5.
64. Chilaka VN, Cole MY, Habayeb OM, et al. Risk of uterine rupture following induction of labour in women with a previous caesarean section in a large UK teaching hospital. J Obstet Gynaecol 2004;24: 264–5.
65. Wu S, Kocherginsky M, Hibbard JU. Abnormal placentation: twenty-year analysis. Am J Obstet Gynecol 2005;192:1458–61.
66. Yucel O, Ozdemir I, Yucel N, et al. Emergency peripartum hysterectomy: a 9-year review. Arch Gynecol Obstet 2006;274:84–7.
67. Stone C, Halliday J, Lumley J, et al. Vaginal births after Caesarean (VBAC): a population study. Paediatr Perinat Epidemiol 2000;14:340–8.
68. Zelop CM, Shipp TD, Repke JT, et al. Uterine rupture during induced or augmented labor in gravid women with one prior cesarean delivery. Am J Obstet Gynecol 1999;181:882–6.
69. Tikkanen M, Nuutila M, Hiilesmaa V, et al. Prepregnancy risk factors for placental abruption. Acta Obstet Gynecol Scand 2006;85:40–4.
70. Katz VL, Farmer RM, Dean CA, et al. Use of misoprostol for cervical ripening. South Med J 2000;93:881–4.
71. Hill DA, Chez RA, Quinlan J, et al. Uterine rupture and dehiscence associated with intravaginal misoprostol cervical ripening. J Reprod Med 2000;45:823–6.
72. Choy-Hee L, Raynor BD. Misoprostol induction of labor among women with a history of cesarean delivery. Am J Obstet Gynecol 2001;184:1115– 7.
73. Cunha M, Bugalho A, Bique C, et al. Induction of labor by vaginal misoprostol in patients with previous cesarean delivery. Acta Obstet Gynecol Scand 1999;78:653–4.
74. Plaut MM, Schwartz ML, Lubarsky SL. Uterine rupture associated with the use of misoprostol in the gravid patient with a previous cesarean section. Am J Obstet Gynecol 1999;180:1535–42. 75. Wing DA, Lovett K, Paul RH. Disruption of prior uterine incision following misoprostol for labor induction in women with previous cesarean delivery. Obstet Gynecol 1998;91:828–30.
76. Blanchette HA, Nayak S, Erasmus S. Comparison of the safety and efficacy of intravaginal misoprostol (prostaglandin E1) with those of dinoprostone (prostaglandin E2) for cervical ripening and induction of labor in a community hospital. Am J Obstet Gynecol 1999;180: 1551–9.
77. ACOG Committee on Obstetric Practice. Committee opinion. Induction of labor for vaginal birth after cesarean delivery. Obstet Gynecol 2002;99:679–80.
78. Tahseen S, Griffiths M. Vaginal birth after two caesarean sections (VBAC2)-a systematic review with meta-analysis of success rate and adverse outcomes of VBAC-2 versus VBAC-1 and repeat (third) caesarean sections. BJOG 2010;117:5–19.
79. Miller ES, Grobman WA. Obstetric outcomes associated with induction of labor after 2 prior cesarean deliveries. Am J Obstet Gynecol 2015;213:89. e1−5.
80. Macones GA, Cahill A, Pare E, et al. Obstetric outcomes in women with two prior cesarean deliveries: is vaginal birth after cesarean delivery a viable option? Am J Obstet Gynecol 2005;192:1223–8. discussion 8−9.
81. Landon MB, Spong CY, Thom E, et al. Risk of uterine rupture with a trial of labor in women with multiple and single prior cesarean delivery. Obstet Gynecol 2006;108:12–20.
82. Miller DA, Diaz FG, Paul RH. Vaginal birth after cesarean: a 10-year experience. Obstet Gynecol 1994;84:255–8.
83. Flamm BL, Newman LA, Thomas SJ, et al. Vaginal birth after cesarean delivery: results of a 5-year multicenter collaborative study. Obstet Gynecol 1990;76:750–4.
84. Caughey AB, Shipp TD, Repke JT, et al. Rate of uterine rupture during a trial of labor in women with one or two prior cesarean deliveries. Am J Obstet Gynecol 1999;181:872–6.
85. Asakura H, Myers SA. More than one previous cesarean delivery: a 5-year experience with 435 patients. Obstet Gynecol 1995;85:924–9.
86. Spaans WA, van der Vliet LM, Roell-Schorer EA, et al. Trial of labour after two or three previous caesarean sections. Eur J Obstet Gynecol Reprod Biol 2003;110:16–9.
87. Phelan JP, Ahn MO, Diaz F, et al. Twice a cesarean, always a cesarean? Obstet Gynecol 1989;73:161–5.
88. Novas J, Myers SA, Gleicher N. Obstetric outcome of patients with more than one previous cesarean section. Am J Obstet Gynecol 1989;160:364–7.
89. Hansell RS, McMurray KB, Huey GR. Vaginal birth after two or more cesarean sections: a five-year experience. Birth 1990;17:146–50. discussion 50−1.
90. Granovsky-Grisaru S, Shaya M, Diamant YZ. The management of labor in women with more than one uterine scar: is a repeat cesarean section really the only “safe” option? J Perinat Med 1994;22:13–7.
91. Chattopadhyay SK, Sherbeeni MM, Anokute CC. Planned vaginal delivery after two previous caesarean sections. Br J Obstet Gynaecol 1994;101:498–500.
92. Hannah ME, Hannah WJ, Hewson SA, et al. Planned caesarean section versus planned vaginal birth for breech presentation at term: a randomised multicentre trial. Term Breech Trial Collaborative Group. Lancet 2000;356:1375–83.
93. de Meeus JB, Ellia F, Magnin G. External cephalic version after previous cesarean section: a series of 38 cases. Eur J Obstet Gynecol Reprod Biol 1998;81:65–8.
94. Flamm BL, Fried MW, Lonky NM, et al. External cephalic version after previous cesarean section. Am J Obstet Gynecol 1991;165:370–2.
95. Miller DA, Mullin P, Hou D, et al. Vaginal birth after cesarean section in twin gestation. Am J Obstet Gynecol 1996;175:194–8.
96. Strong Jr TH, Phelan JP, Ahn MO, et al. Vaginal birth after cesarean delivery in the twin gestation. Am J Obstet Gynecol 1989;161:29–32.
97. Sansregret A, Bujold E, Gauthier RJ. Twin delivery after a previous caesarean: a twelve-year experience. J Obstet Gynaecol Can 2003;25: 294–8.
98. Varner MW, Thom E, Spong CY, et al. Trial of labor after one previous cesarean delivery for multifetal gestation. Obstet Gynecol 2007;110:814–9.
99. Sentilhes L, Vayssiere C, Beucher G, et al. Delivery for women with a previous cesarean: guidelines for clinical practice from the French College of Gynecologists and Obstetricians (CNGOF). Eur J Obstet Gynecol Reprod Biol 2013;170:25–32.
100. Bujold E, Gauthier RJ. Risk of uterine rupture associated with an interdelivery interval between 18 and 24 months. Obstet Gynecol 2010;115:1003–6.
101. Esposito MA, Menihan CA, Malee MP. Association of interpregnancy interval with uterine scar failure in labor: a case-control study. Am J Obstet Gynecol 2000;183:1180–3.
102. Huang WH, Nakashima DK, Rumney PJ, et al. Interdelivery interval and the success of vaginal birth after cesarean delivery. Obstet Gynecol 2002;99:41–4.
103. Shipp TD, Zelop CM, Repke JT, et al. Interdelivery interval and risk of symptomatic uterine rupture. Obstet Gynecol 2001;97:175–7.
104. Kessous R, Sheiner E. Is there an association between short interval from previous cesarean section and adverse obstetric and perinatal outcome? J Matern Fetal Neonatal Med 2013;26:1003–6.
105. Stamilio DM, DeFranco E, Pare E, et al. Short interpregnancy interval: risk of uterine rupture and complications of vaginal birth after cesarean delivery. Obstet Gynecol 2007;110:1075–82.
106. Bujold E, Bujold C, Hamilton EF, et al. The impact of a single-layer or double-layer closure on uterine rupture. Am J Obstet Gynecol 2002;186:1326–30.
107. Kok N, Wiersma IC, Opmeer BC, et al. Sonographic measurement of lower uterine segment thickness to predict uterine rupture during a trial of labor in women with previous Cesarean section: a meta-analysis. Ultrasound Obstet Gynecol 2013;42:132–9.
108. Gilliam M, Rosenberg D, Davis F. The likelihood of placenta previa with greater number of cesarean deliveries and higher parity. Obstet Gynecol 2002;99:976–80.
109. Grubb DK, Kjos SL, Paul RH. Latent labor with an unknown uterine scar. Obstet Gynecol 1996;88:351–5.
110. Lau TK, Chan F. Unknown uterine scars, unknown risks. Aust N Z J Obstet Gynaecol 1994;34:216–7.
111. Beall M, Eglinton GS, Clark SL, et al. Vaginal delivery after cesarean section in women with unknown types of uterine scar. J Reprod Med 1984;29:31–5.
112. Chapman SJ, Owen J, Hauth JC. One- versus two-layer closure of a low transverse cesarean: the next pregnancy. Obstet Gynecol 1997;89:16–8.
113. Roberge S, Chaillet N, Boutin A, et al. Single- versus double-layer closure of the hysterotomy incision during cesarean delivery and risk of uterine rupture. Int J Gynaecol Obstet 2011;115:5–10.
114. Bujold E, Hammoud A, Schild C, et al. The role of maternal body mass index in outcomes of vaginal births after cesarean. Am J Obstet Gynecol 2005;193:1517–21.
115. Hibbard JU, Gilbert S, Landon MB, et al. Trial of labor or repeat cesarean delivery in women with morbid obesity and previous cesarean delivery. Obstet Gynecol 2006;108:125–33.
116. Chauhan SP, Magann EF, Carroll CS, et al. Mode of delivery for the morbidly obese with prior cesarean delivery: vaginal versus repeat cesarean section. Am J Obstet Gynecol 2001;185:349–54.
117. Jastrow N, Demers S, Gauthier RJ, et al. Adverse obstetric outcomes in women with previous cesarean for dystocia in second stage of labor. Am J Perinatol 2013;30:173–8.
118. Shipp TD, Zelop C, Cohen A, et al. Post-cesarean delivery fever and uterine rupture in a subsequent trial of labor. Obstet Gynecol 2003;101:136–9.
119. Ravasia DJ, Brain PH, Pollard JK. Incidence of uterine rupture among women with mullerian duct anomalies who attempt vaginal birth after cesarean delivery. Am J Obstet Gynecol 1999;181:877–81.
120. Shipp TD, Zelop C, Repke JT, et al. The association of maternal age and symptomatic uterine rupture during a trial of labor after prior cesarean delivery. Obstet Gynecol 2002;99:585–8.
121. American College of Obstetricians and Gynecologists. Vaginal birth after previous cesarean delivery. ACOG practice bulletin. Int J Gynaecol Obstet 1999;66:197–204.
122. Frost J, Shaw A, Montgomery A, et al. Women’s views on the use of decision aids for decision making about the method of delivery following a previous caesarean section: qualitative interview study. BJOG 2009;116:896–905.
123. Vaginal birth after cesarean and planned repeat cesarean birth. http:// www.powertopush.ca/birth-options/types-of-birth/vaginal-birth-aftercesarean/
124. Eden KB, Hashima JN, Osterweil P, et al. Childbirth preferences after cesarean birth: a review of the evidence. Birth 2004;31:49–60.
125. Craver Pryor E, Mertz HL, Beaver BW, et al. Intrapartum predictors of uterine rupture. Am J Perinatol 2007;24:317–21.
126. Desseauve D, Bonifazi-Grenouilleau M, Fritel X, et al. Fetal heart rate abnormalities associated with uterine rupture: a case-control study: a new time-lapse approach using a standardized classification. Eur J Obstet Gynecol Reprod Biol 2016;197:16–21.
127. Leung AS, Leung EK, Paul RH. Uterine rupture after previous cesarean delivery: maternal and fetal consequences. Am J Obstet Gynecol 1993;169:945–50.
128. Ayres AW, Johnson TR, Hayashi R. Characteristics of fetal heart rate tracings prior to uterine rupture. Int J Gynaecol Obstet 2001;74:235– 40.
129. Guiliano M, Closset E, Therby D, et al. Signs, symptoms and complications of complete and partial uterine ruptures during pregnancy and delivery. Eur J Obstet Gynecol Reprod Biol 2014;179:130–4.
130. Madaan M, Trivedi SS. Intrapartum electronic fetal monitoring vs. intermittent auscultation in postcesarean pregnancies. Int J Gynaecol Obstet 2006;94:123–5.
131. Holmgren C, Scott JR, Porter TF, et al. Uterine rupture with attempted vaginal birth after cesarean delivery: decision-to-delivery time and neonatal outcome. Obstet Gynecol 2012;119:725–31.
132. Bujold E, Gauthier RJ. Neonatal morbidity associated with uterine rupture: what are the risk factors? Am J Obstet Gynecol 2002;186:311–4.
133. Leung TY, Lao TT. Timing of caesarean section according to urgency. Best Pract Res Clin Obstet Gynaecol 2013;27:251–67.
134. Schauberger CW, Chauhan SP. Emergency cesarean section and the 30- minute rule: definitions. Am J Perinatol 2009;26:221–6.
135. Yap OW, Kim ES, Laros Jr RK. Maternal and neonatal outcomes after uterine rupture in labor. Am J Obstet Gynecol 2001;184:1576–81.