When pregnant women have low amniotic fluid during labor, the health care provider might consider a procedure where saline is put into the uterus via a catheter placed through the cervix. This procedure is known as amnioinfusion. It's done during labor if the doctor detects a problem with the baby's heart rate and is done under certain situations such as: - Water breaking - Placenta peeling away from the inner wall of the uterus before the baby is born. - Certain health conditions like chronic high blood pressure or diabetes. - Use of some medications, such as angiotensin-converting enzyme (ACE) inhibitors. - Certain health conditions in the baby, such as restricted growth or a genetic disorder. If you've low amniotic fluid during the pregnancy after completing 35 weeks, the safest option is to deliver.