目的：探讨产前超声在胎儿畸形类别筛查中的应用价值。方法2014年2月至2015年3月在我院行胎儿早孕期超声检查正常的孕妇1200例，分别在中孕期（第21～30周）及晚孕期（第31～35周）复查超声。结果中孕期检出畸形胎儿14例（1.17％），其中中枢神经畸形检出率最高（3例），其次是心血管畸形、颜面部畸形、胎儿肿瘤、腹裂、脐膨出、双胎畸形、骨骼及四肢畸形、泌尿系统畸形、呼吸系统畸形、消化系统畸形。晚孕期检出畸形胎儿4例（0.33％），分别为呼吸系统异常、沁尿系统异常、颜面部异常及心脏异常。结论产前超声检查对胎儿畸形的诊断具有重要的意义。超声检查在中孕期对部分畸形类别效果欠佳，因此在孕晚期进行超声检查时需对胎儿的颜面部、呼吸系统及心血管等器官进行筛查，最大程度地降低畸形的漏诊率。%Objective To investigate the clinical value of prenatal ultrasound screening for fetal malformation of category. Methods During the period between February 2014 and March 2015,1200 normal pregnancy women in early pregnancy ultrasound ex-amination were re-examined during the second trimester(21~30 weeks)and the late pregnancy(31~35 weeks).Results Fourteen cases with fetal malformation were detected in the second trimester re-examination(1.17%).Of the 14 cases,the highest positive rate was central nervous system malformation( n=3) followed by cardiovascular malformations,fetal facial malformations,fetal tumors,gas-troschisis,umbilical bulging,twin malformation,skeletal deformity and the four limbs malformation,malformation of the urinary system, and abnormalities of respiratory system and digestive system.In the late pregnancy check,4 fetal malformations were found(0.33%). The malformations were abnormalities of respiratory system、malfarmation of urinary system.cardiovascular malformations and fetal facial malformations.Conclusion The prenatal ultrasound has an important value in diagnosis of fetal abnormalities.The effect of ultrasound examination in the middle pregnancy for some abnormal categories is not obvious.Therefore,ultrasound in the third trimester should screen fetal facial,respiratory system and cardiovascular system in order to reduce the rate of missing diagnosis.
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