Polyhydramnios

The amount of amniotic fluid during normal pregnancy increases with the increase of gestational weeks, and gradually decreases in the last 2 to 4 weeks. The amount of amniotic fluid at the full term of pregnancy is about 1000ml (800 ~ 1200ml). For too much amniotic fluid. Up to 20000ml. Most pregnant women have a slower increase in amniotic fluid and develop over a long period of time, which is called chronic polyhydramnios; a few pregnant women have a sharp increase in amniotic fluid within a few days, which is called acute polyhydramnios. The incidence of oligohydramnios is reported in the literature as 0.5% to 1%. In pregnant patients with diabetes, the incidence can reach 20%. When there is too much amniotic fluid, the appearance and characteristics of the amniotic fluid are not different from those of normal people.

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