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Thanks for your reply Marilyn. Your apneic baby could be the
result of a placental insufficiency, cord compression, anaemia of the
mother and generally any condition that will lead to
a lack of oxygen to supply the baby through the placenta, including
true or false knots in the cord. Respiration, oxygenation,
nutrition, elimination occurs through the exchange of gases and waste
products through the placenta. The closer to delivery, the more
senile and non-functional the placenta becomes. Another possibility is
an anemic baby, whose Hering Bruer reflex is initiated in response to
hypoxia.
Worthy of note is that fetal breathing movements are just that,
movements - they are not breathing, per se. I verified this today
with an ultrasonographer who regularly performs biophysical
profiles. He stated that they do not, can not, inhale against a
closed glottis. Try it for yourselves. The fetal lung fluid and
amniotic fluid remain separate, as Anne Clark also pointed out.
Must admit Anne, I was not aware that the squeeze doesn't clear the
FLF. Thanks.
Mary, I would really like to know a little more of the ante natal
and intrapartum details of the MSL/MSA C/S baby. Also whether any
organism was cultured from the baby's aspirate (if taken). Was
there any ROM prior to delivery? Was mother anaemic, healthy,
laboring prior to C/S? Febrile, negative GBS /other culture?
Gayle
-------Original
Message-------
Date: Friday, 30 May
2003 10:31:34 PM
Subject: Re:
[ozmidwifery] Interesting..
I thought so too Lesley, but this info was
making me rethink that. But I think that is what happens. Without the
gasp the mec liquor wont enter the lungs with normal fetal breathing and
I guess from the other comments, if you have periodic late decels during
labour and mec liquor then you have a potentially apneic baby, and a
potential gasp, but you wont know unless you're looking.
Interesting.
marilyn
----- Original Message -----
Sent: Thursday, May 29, 2003 5:50
PM
Subject: Re: [ozmidwifery]
Interesting..
I always believed it was secondary or
terminal apnoea that caused the baby to gasp whether inside or outside
of the uterus.
Lesley
----- Original Message -----
Sent: Thursday, May 22, 2003
4:25 PM
Subject: Re: [ozmidwifery]
Interesting..
Marilyn wrote "Yet most babies with mec liquor
don't present with MAS. And some (a very few) babies with very
normal uncomplicated labours and births do develop MAS. Is it the
gasp of a baby in distress (which may happen at any time and be
undetected) or just a random gasp that carries the mec deep into the
lungs ? Just curious"
I'm curious too. I haven't read any studies
about that. Maybe it hasn't been done yet, or can't ethically
be done? Does anyone know? MM
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