Normal Amniotic Fluid Index by Gestational Week in a Korean Population

초록

Background : To obtain a gestational reference range for the amniotic fluid index(AFI)among korean women Methods: An analysis of AFI estimations was undertaken in 1,089 korean women with normal pregnancy between 20 and 40 weeks of gestation. It was a prospective study conducted in a inha university hospital. Women with fetal anomalies, pregnancy-induced hypertension, diabetes mellitus, and other maternal complications were excluded from the study. The median, the 5th and the 95th percentile values were calculated for each gestational week. Results: The median reached its peak at the 29th week of gestation with 12.5cm and declined to 8cm at 40 weeks. We observed approximately 6cm as the lower limit of normal(5th percentile) and approximately 15cm(95th percentile)as upper limit of normal AFI at term for our population. Conclusions: We standardized the reference values for normal AFI in korean women.