Worn out called pregnancy duration which exceeds the physiological period (280 days) for 10-15 days. Pregnancy Survival Rate ranges from 3 to 7%.
Births in post-term pregnancy are calledbelated.Baby is born with signs of overripe. He is often large with large head sizes and long nails. The bones of the head are dense, and the fontanelles are small. Leather dry and loose, no lubrication.
There are changes in the placenta, impeding the delivery of the necessary baby amounts of oxygen and other substances necessary for normal life. This placenta is called old.
There are true perenashivanie and imaginary (prolonged pregnancy). At prolonged re-term pregnancy increases but baby born mature and without signs of perenashivaniya. This may be due to the reasons that caused deceleration of the fetus, and is considered contributing phenomenon fetus ripening.
The reasonsretrofitting complex and studied is not enough. The basis lies lack of biological readiness of the body to maternity. A certain role is played by changes in uterus, reducing its contractile activity arising due to postponed abortions, inflammatory and other diseases. More often it is observed in all women with impaired menstrual function, obesity, in primiparous older than 30 years and can be inherited or observed in the same women several times may also be due to mental trauma.
The effect of drag pregnancy on the fetus is unfavorable, since the course of late delivery is not uncommon complicated (premature rupture amniotic fluid, a violation of the birth activities, oxygen deprivation and injury fetus).The overripe fruit is poorly adapted to postpartum stress.
Usually in this pathology, childbirth do not come on their own and need conduct labor induction, that is prepare pregnant for childbirth. For this funds are used to increase contractile activity of the uterus, and medications, preparing the cervix for childbirth, vitamins, calcium supplements. In the absence of effect from labor induction produce cesarean section.
In order to prevent complications, associated with a post-term pregnancy, all women after 40 weeks go to antenatal hospital obstetric for survey and selection of a rational method delivery