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目的:分析Ⅲ级系统胎儿产前超声筛查对诊断胎儿畸形的临床有效性。方法:选取2011年1月-2013年1月于中山大学附属孙逸仙纪念医院进行产前超声诊断的产妇5590例,对其超声结果进行分组监测,观察组用超声Ⅲ级系统对2335例产妇进行检查。对照组3255例产妇接受Ⅰ级、Ⅱ级产前超声筛查。对比两组不同超声系统检查胎儿畸形的阳性情况,评价超声检查Ⅲ级系统的临床有效性。结果:统计数据发现观察组中确诊为阳性的产妇有235例,其中超声Ⅲ级系统检出阳性结果 228例,阳性检出比率为97.02%,对照组中确诊为阳性的产妇有271例,其中超声阳性检出211例,畸形胎儿阳性检出比率为77.86%,明显低于观察组阳性检出比率。两组胎儿畸形阳性检出比率比较,差异具有统计学意义(P<0.05)。结论:Ⅲ级超声检查系统检测范围广,筛查结果的有效性强,能准确有效对畸形胎儿进行筛查。
OBJECTIVE: To analyze the clinical effectiveness of prenatal ultrasound screening of grade Ⅲ system in the diagnosis of fetal malformations. Methods: From January 2011 to January 2013, 5590 women with prenatal ultrasound diagnosis at Sun Yat-sen Memorial Hospital of Sun Yat-sen University were enrolled in this study. Ultrasound results were monitored in groups. In the observation group, 2335 maternal women were examined by ultrasound grade Ⅲ system . The control group of 3255 maternal accept grade Ⅰ, Ⅱ prenatal ultrasound screening. The positive results of fetal ultrasound examination in two groups of different ultrasound systems were compared, and the clinical validity of ultrasonographic grade Ⅲ system was evaluated. Results: The statistics found that in the observation group, 235 cases were diagnosed as positive, of which 228 cases were positive by ultrasound grade Ⅲ system, the positive detection rate was 97.02%. In the control group, 271 cases were positive, 211 cases were detected by ultrasound, the positive detection rate of deformed fetus was 77.86%, which was significantly lower than the positive detection rate in observation group. Two groups of fetal malformations positive detection rate comparison, the difference was statistically significant (P <0.05). Conclusion: The ultrasonography system has a wide range of detection and strong screening results, which can accurately and effectively screen abnormal fetuses.