| 摘要: |
| 目的 通过产前超声诊断探讨胎儿不同下腔静脉变异的发病率及变异的下腔静脉内径和血流峰速与正常下腔静脉相比是否有差异。方法 回顾性分析37 448例行产前超声检查的胎儿资料，筛查出下腔静脉变异的病例，计算其发病率；比较变异组与正常组胎儿的下腔静脉内径及S波血流峰速有无差异。结果 在所有受检胎儿中，左位下腔静脉54例（1.44‰），双下腔静脉14例（0.37‰）。正常胎儿下腔静脉内径为（2.71±0.42）mm，血流峰速为（36.25±6.30）cm/s；左位下腔静脉内径为（2.70±0.45）mm，血流峰速为（36.55±7.53）cm/s，与正常组相比差异均无统计学意义（t=6.78，P>0.05；t=3.56，P>0.05）；双下腔静脉内径为（2.72±0.50）mm，血流峰速为（36.18±7.49）cm/s，与正常组相比差异均无统计学意义（t=10.43，P>0.05；t=7.01，P>0.05）。结论 左位下腔静脉发病率为1.44‰，双下腔静脉发病率为0.37‰，两种变异的下腔静脉内径和血流峰速与正常组相比无明显差异。 |
| 关键词: 产前超声检查 胎儿 下腔静脉变异 发病率 |
| DOI：10.16781/j.0258-879x.2017.01.0124 |
| 投稿时间：2016-05-01修订日期：2016-07-31 |
| 基金项目: |
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| Prenatal ultrasound diagnosis of fetal variation of inferior vena cava |
| JIAO Bei-yu*,HAN Yu-na,DING Yuan |
(Ultrasonic Department of Obstetrics and Gynecology, Qingdao Women and Children Hospital, Qingdao 266034, Shandong, China
*Corresponding author) |
| Abstract: |
| Objective To investigate the incidence rates of different fetal variations of inferior vena cava, and to compare the diameters and peak velocity of blood in the inferior vena cava between the normal and changed inferior vena cava. Methods Prenatal ultrasound data of 37 448 fetuses were retrospectively analyzed. We screened out the cases with variation of inferior vena cava,and calculated related incidence. Then the diameters and S-wave peak velocity of the inferior vena cava in fetuses of the two groups were measured and compared. Results We found 54 (1.44‰) cases of left inferior vena cava and 14 (0.37‰) cases of double inferior vena cava. The diameter of normal fetal inferior vena cava was (2.71±0.42) mm and the peak velocity was (36.25±6.30) cm/s, the diameter of the left inferior vena cava was (2.70±0.45) mm and the peak velocity was (36.55±7.53) cm/s, both showing no significant difference when compared with the normal group (t=6.78, P>0.05; t=3.56, P>0.05). The diameter of double inferior vena cava was (2.72±0.50) mm and the peak velocity was (36.18±7.49) cm/s, showing no significant difference when compared with the normal group (t=10.43, P>0.05; t=7.01, P>0.05). Conclusion The incidence rates of left inferior vena cava and double inferior vena cava in fetuses have been found to be 1.44‰ and 0.37‰, respectively, and they have similar diameters and velocity with normal inferior vena cava. |
| Key words: prenatal ultrasonography fetus inferior vena cava variation incidence |
