Amniotic Fluid Overview

Information

The fetus floats in the amniotic fluid. During pregnancy the amniotic fluid increases in volume as the fetus grows. Amniotic fluid volume is greatest at about 34 weeks into the pregnancy ( gestation ), when it averages 800 ml. Approximately 600 ml of amniotic fluid surrounds the baby at full term (40 weeks gestation). This fluid is constantly circulated by the baby swallowing and "inhaling" in existing fluid and then "exhaling" and urinating out the fluid.

Amniotic fluid performs many functions for the fetus, including:

• Allowing the fetus freedom to move and enabling the skeleton to develop properly
• Allowing the lungs to develop properly
• Maintaining a relatively constant temperature around the fetus, thus protecting the fetus from heat loss
• Protecting the fetus from outside injury by cushioning ...