On a personal note I had 3 ultrasounds at 35 weeks for various reasons I won't bore you with but the best (as in heaviest) weight they guesstimated was 500g less than her birthweight which is fairly significant difference when you are talking about a 2.3 kg bub.  Suffice it to say I may have made very different decisions about the circumstances of her birth if it had not been for the scary and inaccurate information from u/s.  I have no idea what the research says in this area.
Maxine
----- Original Message -----
From: Kim Stead
Sent: Tuesday, August 30, 2005 9:18 AM
Subject: Re: [ozmidwifery] 3rd degree tears

Out of curiosity...... does anyone have any experiences of vaginal birth following previous 4th degree tear?  I've just recently met a woman who wants to give vaginal birth a go - has new partner (says old one was huge!).  She is smallish person - 60kg, last babe 10lbs (1st baby).  What do you think.  She will be birthing in hospital.  I've asked her to get a copy of her obstetric records from previous hospital.  Still in early pregnancy so can't gauge size yet.  Is a later ultrasound a good idea for a gestimate on the weight?  I know they can be so inaccurate.
 
Kiwi Kim,
 
-------Original Message-------
 
Date: 29/08/2005 11:10:23 a.m.
Subject: [ozmidwifery] 3rd degree tears
 
Hi,
I've just returned from a clinical placement in SA where I spent a mindblowing three hours in an incontinence clinic in an outpatients unit at a major hospital.
The mindblowing element was the following statistics (copied from one of the handouts):
  • 39-49% women tear or have an episiotomy needing sutures
  • 0.5 - 2.5% have a 3rd or 4th degree tear after vaginal childbirth that is visible
  • 25-35% after first vaginal delivery have a concealed or closed 3rd degree tear, not visible
Listed as contributing factors were:
  • 1st vaginal birth
  • forceps/instrumental delivery
  • long second stage  >1 hour
  • big baby    >4kgs
  • tissue type, short perineum, epidural, uncontrolled pushing, rapid delivery, midline tear or episiotomy

The nurse practitioner stated this was all evidence-based information and recommended c/sections to women who had had previous 3rd degree repairs - these were the ones who knew about their tears obviously.
The handouts do not give references and as yet I have not had time to begin researching.

Are you all as mindblown as I am??
What do you think - are 1/4 - 1/3 of us walking around with damaged anal sphincters and not aware of it??
Where does this sort of information lead us - if our bodies are so inept at giving birth then all first babies and subsequently all babies should be born by c/section.

Sue
 
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