On the 27th week of pregnancy the average amount of amniotic fluid is about 1.2-1.5 liters. If there is a pathology of the placenta or fetal pathology its amount may increase up to 3-4 liters, this situation is called polyhydramnios.

At the expressed polyhydramnios pregnant woman’s belly is growing faster than in the normal course of pregnancy, goes down earlier, and on the anterior abdominal wall and thighs appear multiple extensions.

The cause of polyhydramnios is intrauterine infection (chlamydia, cytomegalovirus infection, mycoplasmosis), toxemia of second half of pregnancy, a metabolic disorder. Also polyhydramnios is often encountered in case of pathology of the fetus and Rh-conflict.

Fetal movements during polyhydramnios become more active, the child often changes its position in the uterus, because it is provided with more space for movement.

The reverse pathological process during pregnancy is oligohydramnios. It is characterized by the low volume of the belly and the low position of the uterus, compared with the normal parameters specific to this period.

As well as polyhydramnios, oligohydramnios – is a sign of the suffering of intrauterine fetus. The amount of amniotic fluid is reduced to 500 ml, the woman’s abdomen looks small, fetal movements become less active and are visible through the abdominal wall.

Because of the small amount of water a child is easily detectable by hand, his movements are complicated and rare.

Another dangerous complication during pregnancy is premature rupture of membranes. Water can be poured in one stage, but may be poured out in small portions. Most often this occurs when a pregnant woman lies, in this position the uterus relaxes and the fetal head moves away from the internal os.

When the woman stands up, the baby’s head overlaps the output of amniotic waters again, and they no longer leak. In any case, at the slightest suspicion of premature rupture of membranes, you must consult a doctor immediately.