A 32-year-old pregnant woman at 30 weeks of gestation comes to her physician because of excess weight gain in a 2-week period. Ultraso-nography reveals polyhydramnios.Which fetal abnormality is most likely responsible for the polyhydramnios? A: Bilateral kidney agenesis B: Velamentous placenta C: Hypoplastic lungs D: Esophageal atresia

A 32-year-old pregnant woman at 30 weeks of gestation comes to her physician because of excess weight gain in a 2-week period. Ultraso-nography reveals polyhydramnios. Which fetal abnormality is most likely responsible for the polyhydramnios? A: Hypoplastic lungs B: Umbilical cord knots C: Esophageal atresia D: Bilateral kidney agenesis

A 32-year-old pregnant woman at 30 weeks of gestation comes to her physician because of excess weight gain in a 2-week period. Ultraso-nography reveals polyhydramnios. Which fetal abnormality is most likely responsible for the polyhydramnios?() A: Bilateral<br/>kidney agenesis B: Umbilical<br/>cord knots C: Velamentous<br/>placenta D: Hypoplastic<br/>lungs E: Esophageal<br/>atresia

肺动脉狭窄 A: 可导致50%以上的自然流产 B: 可能是肾不发育(rena! agenesis)的后果之一 C: 既可能导致失明,同时也可能导致耳聋 D: 可能是妊娠早期的糖尿病未得到及时治疗的后果之一 E: Noonan综合征和先天性风疹的特征之一