will i be able to have a vbac

7/24/2019 Will I Be Able to Have a VBAC

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Will I be able to have a VBAC

Here are some questions to ask yourself before you try for a VBAC.

Nov5, 2015 Wendy Haaf

Lets say youd like to at least consider trying for aVBAC. What are some of the factors that influence your risk and

likelihood of success?

Photo: iStockphoto
http://www.todaysparent.com/wp-content/uploads/2011/07/vbac-todays-parent-main.jpghttp://www.todaysparent.com/pregnancy/giving-birth/vaginal-birth-after-caesarean/http://www.todaysparent.com/wp-content/uploads/2011/07/vbac-todays-parent-main.jpghttp://www.todaysparent.com/


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Type of scar

The first thing you need to know is what kind of cut was made into your uterus during your earlierC-section: a classical

(up-and-down) or transverse (side-to-side) incision. This is something you can only tell from your medical records. It has

nothing to do with the cut in the skin, stresses Jon Barrett, chief of maternal-fetal medicine at Sunnybrook Health

Sciences Centre in Toronto. Classical incisions, which are very uncommon, substantially increase the odds of rupture, so

if you have this type of scar, most caregivers will recommend against a VBAC.

Number of previous CaesareansWhile Society of Obstetricians and Gynaecologists of Canada (SOGC) guidelines state that women with two previous

operations should be able to opt for a VBAC, this doesnt always happen in the real world; some centres have a policy of

not offering VBAC after two previous Caesareans.

How labour begins

IV medication (oxytocin) used to kick-start contractions, and hormonal gels and suppositories (prostaglandins) that are

used to soften the cervix approximately double the chance the scar will separate. (By contrast, using a device called a

Foley catheter to ripen the cervix has no such effect.) Thats why some centres rule out induction entirely if a woman is

attempting a VBAC. Induction also decreases the chance that a trial of labour will end in a successful VBAC.

By contrast, going into labour spontaneously increases your odds of success. In fact, if your contractions start before a

scheduled section, and youre in advanced active labour by the time you get to hospital, not only are your chances of

success increased, part of your risk of rupture has already passed, says Andrew Kotaska, clinical director of obstetrics

and gynaecology at Stanton Territorial Hospital in Yellowknife.

Read more: The stages of labour>

Interval between births

Waiting less than 18 months after a C-section before attempting a VBAC may increase the odds of rupture. According to

SOGC guidelines, this doesnt contraindicate a trial of labour; still, some centres deny the option of a VBAC attempt less

than 18 months after a Caesarean.

Reason for previous C-section

The reason a woman had the Caesarean in the previous pregnancy can affect the chances of a successful VBAC,

Barrett observes, though it doesnt have as big an impact as people might think. For instance, if your section was done

for a reason that isnt likely to recur, like the baby being in a breech position, your chances of success are actually 80

percent, notes Kotaska. On the other hand, if your previous labour stalled, your odds of success fall to about 60

percent.
http://www.todaysparent.com/pregnancy/giving-birth/the-stages-of-labour/http://www.todaysparent.com/pregnancy/giving-birth/c-sections-the-pros-and-cons/


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Previous vaginal birth

Having given birth vaginally, either before or after your C-section, boosts your chances of success to roughly 90 percent.

Other factors

Kotaska says theres evidence women under 35 or who arent overweight may have better-than-average odds of a

successful VBAC. Ditto for those whose babies are estimated to be smaller. However, estimates of fetal weight are

notoriously inaccurate. Furthermore, adds Steele, its not uncommon for women who were told their C-section was

necessary because the baby was too big to squeeze through the birth canal, to end up having a successful VBAC with an

even larger baby.

Originally posted in July 2011.
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will i be able to have a vbac

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