Frequency of fetal anomaly and perinatal outcome in polyhydramnios / 대한산부인과학회잡지

ABSTRACT

OBJECTIVE: To determine the frequency of fetal anomaly and perinatal outcome in pregnant women with polyhydramnios. METHODS: Ultrasound examinations from January 1998 to August 2001 were reviewed to identify 170 patients with singleton pregnancy which diagnosed polyhydramnios. Frequency of fetal anomaly and perinatal outcomes were compared with amniotic fluid index (AFI) 20.0-25.0 cm as group 1 and AFI >25.0 cm as group 2. RESULTS: The prevalence of polyhydramnios was 0.54% (170/31,358). The types of structural anomalies were gastrointestinal system (10/34, 29.4%), genitourinary system (9/34, 26.5%), central nervous system (CNS, 6/34, 17.7%), cardiovascular system (CVS, 3/34, 8.8%), neuromuscular system (2/34, 5.9%), respiratory system (1/34, 2.9%) and others (3/34, 8.8%). The structural anomaies between two groups were significantly different. The rate of cesarean section, low 5-min Apgar score (25.0 cm) and genitourinary system anomaly was dominant in group 1 (AFI 20.0-25.0 cm). Polyhydramnios (AFI>25.0 cm) indicated an increased risk of severe fetal anomaly.