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Henci GoerFind out what other moms-to-be are asking.  Join in the discussion with Henci Goer, an expert in obstetric research. If you would like to contact Henci outside of the Ask Henci forum, send an email to Goersitemail@aol.com.

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Reply To Topic Topic: Planning homebirth 16 months after c-section
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Posted By Henci Goer, BA on 24 Dec 2008 12:48 AM

I have the research on the association between interdelivery interval and scar rupture to hand because I recently finished writing the chapter on VBAC for the forthcoming new edition of Obstetric Myths Vs. Research Realities. The biggest of the studies, 18,000 women with prior cesareans, reported a rate of 1.1% with interdelivery interval less than or equal to 24 months compared with an overall rate in women with one prior cesarean of 0.7%. That was without adjusting for labor management that could increase the risk of scar rupture such as inducing labor or giving oxytocin to strengthen contractions. (A different analysis of the same database found that the odds of scar rupture were 0.4% with spontaneous labor onset and no oxytocin augmentation compared with 1% with induction and 0.9% with augmentation.) In other words, you have a 99% chance of having no problems with the scar and probably even better than 99%.

-- Henci

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(1):12-20.

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