Stages of labour
Labour is
described in three stages the fourth stages is the first one hour after the
delivery of placenta.
“ This is the period from the onset
of the true regular uterinecontractions until full dilatations of the cervical
Os.” This is the period of cervical dilatation and it is described in phases.
Latent Phase: this is the period prior to
active stage oflabour. Time from spontaneous onset of labour until the cervix
is 3-4cm dilated and the cervix shortens from 3cm to 0.5cm long. It may last
6-8hours in primip but much shorter in multiparous, the line on the partogram
remains horizontal.
Active phase: Is the period from 3-4cm to 10cm
dilatation.The cervix undergoes more rapid dilatation, at the rate of about 1cm
per hour. The line on the partogram rises rapidly. It last 2-6 hours but
shorter in multiparous women.
This is
that of expulsion of the fetus. “it is the period from full dilatation of the
cervix and the urgue to push and ends when the fetus is expelled”.
Is that
of separation and expulsion of placenta and membranes and the control of
bleeding. “That is from the birt h of the baby until the delivery of the
placenta and membranes and bleeding is controlled”. Not affected by parity.
This is a
period of one hour following the birth of placenta. This period is given
recognition in order to emphasis the importance of continuous vigilance on the
woman for the risk of post partum hemorrhage. Not affected by party. It is
actually the first one hour in puerperium.
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