Etiological factors: Retention of placenta
Etiological factors:
Anything which interferes with the proper contraction and retraction of the uterus may give rise to retention of the placenta. To this, the term ‘atonic non-detachment’ is applied. Ordinarily, the placenta is so implanted that separation through the spongy layer of the decidua is easily brought about. At times, as a result of infection and inflammation, there may be adhesions at the site of implantation, when the non-separation and expulsion is due to ‘adherent placenta’. Abnormalities in implantation may result in deeper penetration of the musculature by the trophoblast, and this again gives rise to pathological conditions like placenta accreta and increta.
1. Atonic non-detachment may result from factors interfering with the efficient retraction of the uterus.
2. Adherent placenta may result from endometritis or abnormalities of implantation and development as in placenta accreta, succenturiata , membranacea.
3. Retention may also be due to irregular uterine spasms due to the use of oxytocics or injudicious management of the third stage such as unnecessary, manipulation of the uterus.
Tags: accreta, endometritis, increta, membranacea, oxytocics, placenta accreta, Retention of placenta, succenturiata, trophoblast
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