羊水量的改变,尤其是羊水过少一直被认为是胎儿窘迫、围生期不良结局的预测指标,而羊水指数(AFI)作为一种超声测定羊水量最常用方法广泛应用于临床。但近期有多项研究对这一理论提出质疑,有报道显示羊水过少对预测围生期不良结局意义不大,甚至有学者认为AFI的测定可能导致产科 Changes in amniotic fluid volume, especially oligohydramnios, has long been considered as a predictor of fetal distress and perinatal adverse outcomes, and amniotic fluid index (AFI) is widely used as a method of sonographic determination of amniotic fluid volume. However, a number of recent studies have challenged this theory. It is reported that oligohydramnios has little significance in predicting the perinatal adverse outcomes. Some scholars even think that the determination of AFI may lead to obstetric