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Wednesday, March 10, 2010

Childbirth Connection eNews :: March 2010

childbirth connection newsletter

March 10, 2010

Hello, Friend.

Research You Can Use
March systematic review: Does cesarean delivery protect the pelvic floor?

Nelson RL, Furner SE, Westercamp M, Farquhar C. Cesarean delivery for the prevention of anal incontinence. Cochrane Database of Systematic Reviews 2010, Issue 2. Art. No.: CD006756. DOI: 10.1002/14651858.CD006756.pub2.

Some women experience leakage of stool or gas while their perineum is healing in the postpartum period, and for some women this problem can become chronic. With age, the number of people with anal incontinence rises, and an estimated 1.4% to 11% of adults and over 50% of nursing home residents have this problem. Cesarean delivery has been proposed as a way to protect the integrity of the pelvic floor and avoid incontinence. A new systematic review explores whether cesarean section is associated with lower rates of anal incontinence than vaginal birth.

This review includes 21 observational studies that compared the odds of anal incontinence following 6,028 cesarean births with the odds of the problem following 25,170 vaginal births. No randomized controlled trials on the subject were found. The quality of the studies was assessed, and because observational studies are subject to more bias than randomized controlled trials, the authors included in their quality assessment whether the studies were prospectively designed, adjusted for maternal age, parity and delivery history, and whether incontinence was measured after 4 months postpartum when the perineum had time to heal. The studies of highest quality were also analyzed separately to see if the results differed from those of lower quality studies. No high quality studies showed any significant difference in incontinence of stool and none of the studies showed any difference in leakage of gas between women undergoing cesarean delivery and those giving birth vaginally.

The take-away: This review shows no evidence that cesarean delivery protects a woman from future anal incontinence compared to vaginal birth. US cesarean rates have increased by 50% in the last decade and are currently at a record high of 31.8% as of 2007. Some have suggested that "maternal demand" cesarean section is contributing significantly to the rising rate of c-section, a practice associated with numerous increased risks when compared to vaginal birth. The authors of this review cite research that suggests avoiding incontinence is the main reason women with no medical indication for c-section elect to have their babies this way. Both of these suggestions are controversial. Just one mother out of 252 in the Listening to Mothers II survey reported that she had a first cesarean birth at her own request with no medical reason, and only one woman reported a cesarean delivery in the belief that it would help prevent future incontinence.

Seeking Participants for NIH-Sponsored Study: Women Carrying a Baby with Spina Bifida
The Management of Myelomeningocele Study (MOMS), a randomized, controlled clinical trial, seeks to enroll pregnant women. The trial, funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), is designed to compare the safety and efficacy of prenatal versus postnatal closure of myelomeningocele. For the duration of the study, prenatal surgery for spina bifida is not available outside of the trial.

Interested women will have their medical records reviewed for inclusion and exclusion criteria. Those who qualify are then referred to a MOMS Center for further screening. Once enrolled, they are randomly assigned to the prenatal or postnatal surgery group of the trial. Participating MOMS Centers: The Children’s Hospital of Philadelphia, Vanderbilt University Medical Center in Nashville, and the University of California at San Francisco.

Participants in the prenatal group undergo surgery to repair the myelomeningocele between the 19th and 25th week of pregnancy and remain at the MOMS Center until cesarean delivery at 37 weeks. Those assigned to postnatal surgery go home after randomization and return to the MOMS Center at 37 weeks for cesarean delivery and myelomeningocele repair. Follow-up evaluations are performed at the center on all infants at 12 and 30 months of age. Travel, food and lodging costs are covered by the research study.

For more information, visit or contact Jessica Ratay, MS, CGC, at 1-866-ASK MOMS or

eNews Spotlight
Focusing only on the facts and figures behind the U.S. maternity care system is not as powerful as looking at the human side of the story. We developed an allegorical portrait of the pregnancy and birth experiences of two different women. Read their stories and learn how maternity care is often experienced versus how wonderful it could be at "Two Birth Stories: An Allegory to Compare Experiences in Current and Envisioned Maternity Care Systems."

Last, if you haven’t already done so, have a look at our latest reports – "2020 Vision for a High-Quality, High-Value Maternity Care System" and "Blueprint for Action." They reveal how our maternity care system could function optimally.

Best Wishes,

maureen_corry signature.JPG
Maureen Corry
Executive Director
Childbirth Connection

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