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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: Vaginal birth after 4th degree tear
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Posted By Henci Goer, BA on 09 Feb 2009 09:49 PM

If I may put in an oar, I would suggest you go for the vaginal birth. The deep tear is not likely to repeat. Among four studies I have on the issue, the repeat rate of anal injury ranged from 1% to 5% in women who had neither episiotomy nor instrumental vaginal delivery at the second birth. In other words, your odds are between 95 and 99 to 1 that you won't have a repeat. On the other hand, cesarean surgery poses a long list of excess risks to you and your baby and to any future babies as well. You will also be less likely to tear deeply if you give birth lying on your side or at the very least that you birth with your legs comfortably apart and not so far open that your perineum (the tissue between the vagina and the anus) is already at full stretch. Also, once the head is crowning, let the contraction do the work and breathe, rather than push, and ease the head out in between contractions.

-- Henci  

Dandolu V, Gaughan JP, Chatwani AJ, et al. Risk of recurrence of anal sphincter lacerations. Obstet Gynecol 2005;105(4):831-5.

Edwards H, Grotegut C, Harmanli OH, et al. Is severe perineal damage increased in women with prior anal sphincter injury? J Matern Fetal Neonatal Med 2006;19(11):723-7.

Martin S, Labrecque M, Marcoux S, et al. The association between perineal trauma and spontaneous perineal tears. J Fam Pract 2001;50(4):333-7.

Peleg D, Kennedy CM, Merrill D, et al. Risk of repetition of a severe perineal laceration. Obstet Gynecol 1999;93(6):1021-4.

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