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  • Q&A with Australian Health Practitioners

    What is the success rate of vaginal delivery after C section?

    I had a c section for my first child and was wondering if i tried for a vaginal delivery what the success rate is? What are the risk factors if any associated with vaginal delivery post c section?
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    Dr Atef Saba

    Gynaecologist, Obstetrician

    Comprehensive obstetrics: prenatal, antenatal and postnantal care. Investigation and management of female infertility and IVF, recurrent miscarriage and early pregnancy complications. Male infertility and surgical ... View Profile

    Gereally speaking your chance to have vaginal birth is 60-70%.

    There are a lot of factors should be considered before chosing trial of vaginal birth. The obvious one is the reason of your previous CS. Is this reason still valid for the current pregnancy? such as uterine abnormalitis, pelvic bones deformaties, or previous surgery on the uterus. The size and position of the current baby before delivery are also important for you to help deciding. Some obstetrician will not induce labour with previous CS because the risk of rutured scars.

    With the trial of vaginal birth after CS, you need to be monitored contiously with fetal heart monitor (CTG) and epidural is recommended. 

    Good Luck

  • Dr Joseph Jabbour

    Gynaecologist, Gynaecologist - Infertility (IVF) Specialist, Obstetrician

    Dr Joseph Jabbour is a specialist Obstetrician & Gynaecologist and Fertility Specialist with Monash IVF situated in Sunnybank (Brisbane Southside). Dr Jabbour has had the ... View Profile

    Hi there,

    I usually quote a success rate between 60-80%. This success rate fluctuates depending on a few important factors. I agree with Dr Saba with the obvious one being the reason for the C-section. Did you have a C/S for a breech (higher success rate for a VBAC), or was it a C/S after an obstructed labour at full dilatation with a failed attempt at an instrumental delivery (much lower success rate of a VBAC). 

    To attempt a VBAC there are a few criteria that need to be met, such as the section being a lower segment C-section and that the interval from the previous pregnancy is > 18 months. 

    The risk with a VBAC is uterine rupture and is 1:200. The risks with uterine rupture are a hysterectomy (~1:1000) and brain damage or death of the baby (~1:1000)

    I have attached a link to an article from my website that will further shed light on this. I hope it helps with your decision making. Obviously the success rate of the VBAC also depends on which hospital you aim to deliver at and the obstetrician looking after you.

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