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对３０例因不同产前诊断指征的孕妇于妊娠１９～３６周在超声引导下进行胎儿宫内取血，其中脐静脉穿刺１次成功２５例，另５例行第２次穿刺取血获得成功。８３．３％孕妇在１５ｍｉｎ内完成脐静脉穿刺，每例取血量１～６ｍｌ不等，无１例出现与操作有关的致命性并发症。表明超声引导下脐静脉穿刺取血是一种安全有效的产前诊断方法；当脐静脉穿刺失败时，胎儿肝内静脉穿刺是可选的替代取血途径。
Thirty cases of pregnant women indicted by different prenatal diagnosis were fetched intrauterine ultrasound under the guidance of ultrasound in 19 to 36 weeks of gestation. Among them, 25 cases were successfully punctured by umbilical vein and 2 cases were obtained by puncturing the other 5 cases success. 83.3% of pregnant women completed umbilical vein puncture in 15 minutes, each taking blood volume ranging from 1 to 6ml, no one occurred with the operation-related fatal complications. Ultrasound-guided umbilical vein puncture is a safe and effective method of prenatal diagnosis. When the umbilical vein puncture fails, intrahepatic venous puncture of the fetus is an alternative alternative blood sampling method.