Showing posts with label labor progress. Show all posts
Showing posts with label labor progress. Show all posts

Monday, December 6, 2010

The Myth of "Early Labor"

Expecting mother
Expecting Mother By Petercantfail at en.wikipedia [Public domain], from Wikimedia Commons

As a science, medicine seeks to define things in specific terms. As a natural process, childbirth doesn't always fit into perfect little boxes. Childbirth education often uses the explanations from medicine in attempts to help women understand the birth process. However, based on my own observations, the "textbook labor" does not apply to the experiences of a very large proportion of birthing women, and I wonder if we are, by using it, doing women a disservice by creating false expectations.

The general model that is taught is that there are three stages of birth: dilation, pushing, and birth of the placenta. Within the dilation stage, three phases are taught: the early/latent phase, active phase, and "transition."
  • Early phase is usually defined the time when the cervix is going from 0-3 cm dilation, and is characterized by pressure waves that are spaced far apart and my be irregular.
  • Active phase is defined as cervical dilation from about 4-7 cm, and is when the waves get regular and increase in intensity and frequency and cause measurable cervical change.
  • "Transition" is when the cervix goes from 8-10 cm, and is usually explained by its physical and emotional intensity and the presence of symptoms such as shaking, nausea, and vomiting.
There are a few problems with this construction.
  • If this is the "normal" birthing women whose births do not fit this pattern may consider what they experience as "abnormal."
  • It relies very heavily on measuring the cervix as a basis for knowing how far along a woman is.
  • Some women's cervices will be reach dilations where thy should be in "active phase" but stay there for days or weeks before the baby is born, and there is nothing pathological going on
  • I specifically disagree with the way "early/latent phase" is characterized.
The impression that this model gives is that from "not in labor" to "in labor" is a one way street; once "labor" begins, you are "in labor" until your baby is born. I feel that this construct, together with unrealistic media portrayals of childbirth (where it always seems like a woman is going along minding her own business, suddenly her water breaks, chaos and rushing ensues, as well as some screaming, and then someone is handing her a "newborn" the size of a 3 month old), encourages women to head to the hospital as soon as they have contracting sensations that they can tell are more intense than the Braxton Hick's they have been having.

I have been participating in an online support forum for women who are planning natural births for about 3 years now. On our group, we have a fun tradition called Lodges, which are a sort of journal for pregnant women that lasts from 36 weeks to about 1 month postpartum. I have followed many lodges in the past three years, so I have read updates from women as they are nearing the births of their babies. From my own informal observations, it appears to me that a majority of women experience periods of regular and intense pressure waves (not Braxton Hicks, but the same kind you have during birthing) on and off for days, weeks, and in some cases months, before giving birth. They will go long periods with no pressure waves, then have them start again for a few hours, then they'll go away. So, does early labor stop? Can early labor last for two weeks? Or is our idea of "early labor" a myth?

Some people would call the off-and on periods of pressure waves "false labor," but I really dislike that language because it implies that the woman doesn't know what she's feeling. In many cases, the only way to tell the difference is in retrospect: sometimes they go away and sometimes they continue to the birth of a baby, they usually don't really feel much different from each other, contrary to what some will tell you. "False labor" also implies that it is not doing anything, and I am of the opinion all pressure waves do something, even if it is not causing measurable dilation. It could be effacing the cervix or encouraging the baby to rotate into a better position. In some cases, dilation is occurring, just not quickly enough for it to be measurable. For women who have "false labor," it may just be that their body does the "early labor" work incrementally, with long periods of rest.

The problem is that I suspect that the majority of women don't know how common start-stop labor (as I like to call it) really is. I recently read a blog post by a nurse (shared on facebook by The Deranged Housewife) who blamed the "need" for hospitals to use pitocin on women going to the hosptial and getting epidurals too early. Comments on the facebook link suggested that the problem is not the patients themselves, but that someone is failing to adequately inform them what the end of pregnancy is really like. The nurse's post really made me wonder how many women are getting pitocin for "stalled labor" when actually they were having an episode of pressure waves that would have gone away? How many of these babies would actually have come days or weeks later without the pitocin?

(On a similar note, I also love this post by midwife Stephanie of Vita Mutari questioning the logic that it is "safe" to "labor at home as long as possible" in order to avoid crowding the labor and delivery floor and avoid interventions, yet "unsafe" to plan a homebirth with a midwife.)

The concept of "early labor" is misleading because it is so easy to mistake start-stop labor for "early labor," and if women assume "this is it"and run to the hospital at the first sign of a pressure wave, they are guaranteed to either be sent home disappointed or have a whole lot of interventions, and neither of those is a desirable thing. I know I fell into the "early labor" trap myself with my first birth--I remember thinking "I've been in early labor for two days and I'm only 1 centimeter?"

For real, human women, not mythical "textbook" ones, the onset of the birthing time is a fluid process that they may move in and out of at their own unique pace. The last few weeks of pregnancy are the orchestra tuning up before the concerto, the engines revving before the race.

Tuesday, May 4, 2010

A New Way to Assess Labor Progress Externally!

I don't like vaginal exams. I was pretty proud of myself that for the recent birth of my son, the first vaginal exam my OB performed was at 8 cm. I did check myself twice before that, but checking yourself is different because you can stop poking before you hurt yourself.

Someone on my natural childbirth forum posted this link: http://www.natural-pregnancy-mentor.com/vaginal-exams.html

It goes over what a vaginal exam measures and what it does (and doesn't) tell us about the progress of labor. It also goes over the risks, including rupture of membranes and infection. Okay, okay, tell us something we don't know, right?

Here's the good part: The credit is given to midwife Anne Frye for a method for measuring labor progress externally by comparing the location of the fundus (top of the uterus) at the height of a contraction to the zyphoid process (the cartilage at the tip of the sternum/breastbone):

Your birth attendant can determine how many fingerbreadths of space are between the fundus and xiphoid process at the height of a contraction.

# 5 fb = no dilation
# 4 fb = 2 cm
# 3 fb = 4 cm
# 2 fb = 6 cm
# 1 fb = 8 cm
# 0 fm = complete

To some this does not make sense: that the space between your xiphoid and your fundus shortens - becomes narrower - dilation advances since your baby engages more and more as the contractions push him inside the birth canal. Remember, the upper segment of your uterus thickens as labor advances. Your uterus also rises more as contractions intensify. This is also the reason why this must be done at the height of a contraction. Midwives have reported this to be very accurate...and a bonus no fingers where they do not belong!


At first it didn't make sense to me that the fundus gets closer to the zyphod process. I thought, shouldn't the uterus move down as the baby does? But then I got it: as the uterus thins and opens at the bottom, it thickens at the top--that's physics. This method is actually measuring dilation from the TOP of the uterus instead of the bottom. AMAZING!

If this method really works (and midwives say it does), then it could lead to the end of vaginal exams in labor! No more uncomfortable, intrusive exams that increase the risk of infection, and no more getting into uncomfortable positions to be be "checked," and no more ending up stuck in those positions to push.

I am definitely going to be telling my birth attendant about this whenever I have my next baby!