What are some common causes of hydramnios?

Hydramnios, or excessive amniotic fluid, can often be attributed to conditions related to multiple gestations and fetal anemia. In cases of multiple gestations, such as twins or triplets, there is a higher likelihood of increased amniotic fluid. This is due to the presence of more than one fetus, which can produce more urine and contribute to the volume of amniotic fluid.

Fetal anemia, a condition where there is a deficiency of red blood cells in the fetus, can also lead to an increase in amniotic fluid. This occurs because the fetus may produce more urine in an attempt to compensate for the stress of anemia, thus leading to higher levels of fluid in the amniotic sac.

Understanding these common causes is crucial for monitoring pregnancies and anticipating potential complications associated with hydramnios.