Comment & Controversy

HOW DO YOU FEEL ABOUT EXPECTANTLY MANAGING A WELL-DATED PREGNANCY PAST 41 WEEKS’ GESTATION?

ROBERT L. BARBIERI, MD

(EDITORIAL; FEBRUARY 2019)

Membrane stripping can be problematic

The recent discussion on stripping membranes to facilitate the initiation of labor and delivery was intriguing. This practice was reviewed extensively during my training in the 1960s and abandoned when the results were disappointing or contradictory. Although the practice has been revitalized recently, I am concerned that potential risks and the absence of a recommended protocol of safeguards may allow new problems to develop.

In a metropolitan community where I provide consultative services, the only patients I see for evaluation of pregnancies beyond 40 to 41 weeks come from providers who are non-physicians. Apparently, they are concerned that they may have to turn their patients over to physician providers for interventions that they are not capable of doing. My advice to them is simply that nothing good happens after 40 to 41 weeks.

Well-grown babies may continue to grow if they are healthy, and they may incur greater risks of dystotic labor and delivery resulting in injury or the need for physician-administered surgical assistance. If, on the other hand, growth markedly diminishes or ceases, fetal harm or neonatal complications may occur through asphyxia, meconium aspiration, or trauma. In either event, physician-based assistance is strongly encouraged, as long as due diligence in determining gestational age has been done.

Promoting membrane stripping without having a protocol for ascertainment of risk factors is worrisome to me. In my opinion, large population studies that fail to demonstrate increased risks of infection may fail to demonstrate that membrane stripping may induce a degree of perinatal infection comparable to that of prolonged labor with multiple internal examinations with or without ultimate cesarean birth. Prior to considering membrane stripping as a strategy, one should recognize certain important considerations, namely:

• Patients most in need of active intervention may have the least favorable cervical findings, and as a result they are potentially at risk for the greatest discomfort.
• The frequency of group B streptococcal colonization of the vagina at term should be recognized, and a culture should be obtained immediately prior to intervention. When a culture is a positive, membrane stripping should be avoided, or at least a sober consideration of its use and appropriate antibiotic coverage should occur.
• Consider performing transvaginal ultrasonography prior to membrane stripping to exclude the possibility of a placental edge close enough to be encountered and compromised, with resultant hemorrhage in an outpatient venue ill equipped to provide adequate emergency support.
• The comparative effectiveness of other direct cervical conditioning therapies, including use of a Foley catheter or regional prostaglandin medication, has been well explored and found effective. Also, if one takes seriously the need for any intervention, admission to the hospital for overnight cervical conditioning allows for surveillance and avoids the patient experience of being sent home cramping, bleeding, brooding infection, and questioning her trust in the provider.

Continue to: I am concerned that the promotion...