Background : In various obstetric situations, when lack of amniotic fluid is perceived to be the problem, the infusion of fluid into the amniotic cavity is a simple and logical treatment approach. Artificially increasing amniotic fluid volume may better protect the umbilical cord from compression. Diluting thick meconium fluid may reduce the risk of meconium aspiration syndrome. Amnioinfusion may allow spontaneous vaginal delivery and avoid the necessity of operative intervention. This inexpensive technique appears to pose little risk and warrants consideration in properly selected patients.