PREGNANCY-BIRTH Messages for November, 2002: Re: what causes dialation>?

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Re: what causes dialation>?

From: John Essien MD (anonymous@obgyn.net)
Sat, 30 Nov 2002 14:15:51 -0600 (CST)

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In reply to: anon: "what causes dialation>?"

A combination of factors which include the pressure from the presenting part of the fetus, as well as that of the amniotic sac, on the cervix; the softening of the cervix and the contractions of the muscles of the uterus. Dilation goes up to approximately 10cm because that's the maximum diameter of the outlet of the bony pelvis in the portion where it is caovered by the tissues of the dilating cervix.

At Sat, 30 Nov 2002, anon wrote: >
>is It the actual contractions? or is it just something that happens? AND
>why is 10 cm the magic number, can a woman go over 10? or under 10 and
>still deliver?

--
John Essien, M.D. SOCOG
Camaguey, Cuba; Basseterre, St. Kitts
http://www.obgyn.net/all_advisors/J_Essien.htm

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