• FBS的适应证是羊膜穿刺术后见染色体嵌合现象,评估胎儿的血液系统疾病。 • FBS后胎儿死亡风险增加的相关因素包括胎儿结构异常(包括水肿)、宫内生长受限(IUGR),孕周不足24周。 01 技术 在连续超声引导下经腹将20-22G号针头刺入脐静脉。如果胎盘在子宫前壁,...
These Guidelines aim to describe appropriate assessment of fetal biometry and diagnosis of fetal growth disorders. These disorders consist mainly of fetal growth restriction (FGR), also referred to as intrauterine growth restriction (IUGR) and often associated with small-for-gestational age (SGA), and...
Factors associated with increased risk of fetal loss after FBS include fetal structural defects (including hydrops), intrauterine growth restriction (IUGR) and, possibly, gestational age < 24 weeks (GRADE OF RECOMMENDATION: B). There are several reported approaches to the umbilical vein for FBS...