To determine oligohydramnios with AFI, the accord rate was 95.92% (188/196), The rate of cesarean section was 71.74%(165/230).

• 用超声测定羊水指数作为监测羊水量的指标,符合率为95·92%25(188/196)。 剖宫产率为71·74%25(165/230)。