Identification

Stripping the membranes refers to the process in which the doctor or midwife runs a finger around the area just inside the pregnant woman's cervix, separating the amniotic sac from the rim of the cervix.

Theory

The theory about stripping the membranes is that the molecules that adhere the membranes to the cervix are broken when the membranes are separated from the cervix. The molecules convert into natural-labor stimulants called prostaglandins.

Benefits

Stripping (or "sweeping") the membranes may speed the onset of labor for women who are overdue. It is a natural way of beginning the process of softening the cervix and can possibly reduce or eliminate the need for labor-inducing medications.

Considerations

Do not have your membranes stripped if you are delivering via C-section or if you are not yet 40 weeks pregnant. The cervix must be slightly dilated, or the practitioner won't be able to get her finger in to separate the membranes from the cervix.

Warning

In some cases, this procedure can cause bleeding, cramping, pain and infection. It may need to be repeated several times, and even then it is not guaranteed to work.

Does It Work?

A 2004 Cochrane Database Systematic Review showed that while the procedure does not seem to be risky for the most part, only a clinically insignificant number of women appeared less likely to deliver past their due dates.

Source:

Is Membrane Stripping Appropriate in Modern Obstetrics?

Gynob: Stripping Membranes

MedScape: Stripping Membranes

More Information:

DrSpock.com: Natural Ways to Induce Labor

MidwifeInfo: What is Stripping the Membranes and Why is it Done?