what is the relationship between effacement, dilation, station? - Mothering Forums

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#1 of 9 Old 07-20-2008, 07:24 PM - Thread Starter
 
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Okay can you dilate without being effaced?
Or does a certain cm dilation usually corelate to a % effacement?

anyone got any good explinations on how they are related?
or are they independant sometimes?

8 might be enough
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#2 of 9 Old 07-20-2008, 07:57 PM
 
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Independent and interdependent.

As the baby's head moves down it moves in stations. The higher it is in your pelvis the lower the number from -4 to 0, then as it moves down into your pelvis the numbers go higher.

Effacement is how thick your cervix is, so think of it vertically. How long the cervix is at the time. If you are not effaced at all its at its full length but as the head creates pressure it starts to get shorter.

Dilation is how open it is and is related to effacement, they usually happen together. The head presses down and shortens the cervix while at the same time the cervix opens up. 10cm isn't an exact measurement by the way. 10cm means your cervix is all the way open but that is not exactly 10cm for each woman.

one picture to explain it

another one

this one shows effacement best, I think

The cervix also makes a few other moves. During pregnancy its usually posterior (near your butt) but as labor progresses it moves forward to the anterior. I think this is one of the last things that usually happens.

I hope that helps and isn't too confusing.

Mom of a 7 yr old, 4 yr old, and 1 yr old. Wow. How did that happen?
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#3 of 9 Old 07-20-2008, 08:05 PM - Thread Starter
 
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any information is great..
I know what a posterior cervix feels like...or sometimes doesn't cause its too far back....

but how do you tell the difference between a midway and anterior cervix..
for example if I can feel it sitting on the loo is that anterior (I don't have piano fingers but am 5-7)

but I do have chubby "man hands" so would two fingers in the cervical opening be 2cm or more?

8 might be enough
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#4 of 9 Old 07-20-2008, 08:09 PM
 
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Thanks for those links! That really helped me see what those terms mean.
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#5 of 9 Old 07-20-2008, 08:15 PM
 
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Two fingers is 4cm, each finger width is approx 2cm

Mom of a 7 yr old, 4 yr old, and 1 yr old. Wow. How did that happen?
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#6 of 9 Old 07-20-2008, 08:20 PM - Thread Starter
 
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Megan you are a wealth of information!

4cm eh...
okay time for a bath and a glass of wine for my nondrinking self..

I want a leo and I got atleast 3 more days to go!

8 might be enough
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#7 of 9 Old 07-21-2008, 12:56 AM
 
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well, according to that chart and my self-check, I am 2 cm dilated! woohoo!!!! I am able to put one finger into the cervical cavity

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#8 of 9 Old 07-21-2008, 12:06 PM
 
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Quote:
Originally Posted by ~Megan~ View Post
During pregnancy its usually posterior (near your butt) but as labor progresses it moves forward to the anterior. I think this is one of the last things that usually happens.
Just for a note mine stayed posterior until 10cm and I was pushing. I know the babe came out but it never actually made any move to anterior until that point. The nurses actually had a HECK of a time even reaching(all of them were complaining how far back it was and they could not get a good feel it since it was SOOO posterior and the babes head was really low. They had to reach around the babies head to get to my cervix. It was a long way back there.

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Nursed fly-by-nursing1.gifmy homebirth.jpg babe, dd2 (2008) until self weaned at 3yrsbouncy.gif. We survived a major nursing strike.

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#9 of 9 Old 07-21-2008, 01:46 PM
 
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For first time moms, the cervix will usually efface completely before it starts dilating.

For experienced mamas it usually happens simultaneously.

Nik! Mama to Evelynn Rose 08/19/08 and Autumn Lily 11/02/10
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