Some doctors and/or hospitals do not allow VBACs any more; they used to encourage them. But a study came out that showed that *managed* labors (in other words, induced or augmented with Pitocin or prostaglandins like Cervidil and Prepidil) had a higher rate of scar separation and rupture than planned C-sections; however, the rate of spontaneous labors had the same rate.
There are a few times when a VBAC attempt has a higher rate of uterine rupture, so you'll want to make sure you are a good candidate for a VBAC. These include a vertical uterine incision, inducing or augmenting labor, if the uterine scar is too thin, or pregnancies too close together (getting pregnant before a year after your C-section has a slightly higher rate of uterine rupture, but I've known women that fit this category that haven't had any problems).
The risk of uterine rupture is very low; but occasionally if the uterus ruptures the baby is put at risk, and the mother may require a hysterectomy. Having a repeat C-section is not a guarantee of a problem-free birth, though! I just read a story (there's a link on my blog) in which a woman had a repeat C-section at the request/demand of her doctor, and ended up with a hysterectomy.
A few resources to check out: hencigoer.com (look at the studies on VBAC, as well as check out her book from the library); ican-online.org (this is the premier C-section and VBAC website); and more resources on my blog (http://womantowomancbe.wordpress.com)--you can check out the links I've got on my blogroll as well as posts in the "c-section" category.
I would strongly suggest that you start having these conversations with your ob NOW. First, if you are a poor candidate (let's say you had an emergency C-section under general anesthesia with a vertical incision), then you'll know and you can start getting mentally prepared for a necessary repeat C-section. But if your doctor just doesn't allow VBACs, even if you're low-risk, then you'll need to know your options. If you stick with that doctor, then you'll have to fight her tooth and nail to give birth vaginally, or just submit to a C-section that you believe to be unnecessary. You have other options, though. You can switch to a VBAC-friendly doctor, or possibly find a midwife and have a home-birth. (I forget Kentucky's rules, but I think midwifery is illegal there, so you'll have to get connected to find a midwife who will attend you, if you take this option.) There are even women who have had unattended VBACs, because they felt so strongly that having a C-section or fighting for a vaginal birth in a hospital were unacceptable. If you wait until you are near the end of your pregnancy, though, you will not really have any options, because some care-providers will not want to accept you so late in your pregnancy, or you simply will not have time to find a VBAC-friendly doctor, hospital, or midwife.
VBAC success rates range from 66-80%, I think--definitely a majority. The more vaginal births you've had (whether before or after a C-section), the better your chances of having a VBAC.
The reasons for your first C-section may or may not be a factor in whether it would be wise for you to have a repeat C-section. If your first C-section was due to a failed induction or slow dilation or long labor, then that's not a big indicator of anything other than the doctor's failure to wait. I understand you had complications, and an induction and/or C-section may have been necessary; but inductions are notorious for failing in first-time moms--this does not mean that *you* were a failure, but that *the process* failed you.
You're doing the right thing--gathering information and resources. Once you feel prepared, you should initiate the discussion with your doctor and try to change her mind. Don't be afraid to seek a second opinion. Call around to your local doctors and hospitals (or perhaps even some that aren't so local, but within driving distance), and ask if they allow VBACs, or who is a VBAC-friendly doctor; talk to local moms and find out their recommendations, too. If you get a nice, easy-going, laid-back doctor who is very pro-VBAC, but looks at your chart and says "no" then you'll be satisfied that you really are not a good candidate. Otherwise, you might be heading for a completely unnecessary C-section.
hth,
K.
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