Amnioinfusion is the replacement of amniotic fluid volume through intrauterine infusion.

It involves the use of an isotonic solution, such as normal saline or lactated Ringer’s solution, delivered through a pressure catheter.

The procedure is indicated when umbilical cord compression is a factor or when repetitive variable decelerations aren’t alleviated by maternal position change and oxygen administration.

Amnioinfusion may also be done to dilute meconium before aspiration occurs.

It helps to relieve umbilical cord compression in such conditions as oligohydramnios associated with postmaturity, intrauterine growth retardation, and premature rupture of membranes.

Isotonic solution such as normal saline or lactated Ringer’s solution

Clean gloves

Intrauterine pressure catheter