实时三维超声双平面技术评价胎儿卵圆孔处血流的应用

发布时间：2018-08-22 18:28

【摘要】：目的探讨实时三维超声双平面(Bi-plane)技术在评价胎儿卵圆孔处血流中的应用价值。方法纳入186胎无心内外畸形的正常胎儿,获得下腔静脉右心房入口冠状切面。于该切面测量卵圆孔内径(DFO)及下腔静脉右心房入口处内径(DIVC),计算两者的比值(DFO/DIVC),并分析该比值与孕周的相关性。结果 DFO/DIVC与孕周无明显相关性(r=-0.228,P0.05)。中孕期(21~28周)胎儿共155胎,DFO为(4.46±0.57)mm,DIVC为(4.55±1.22)mm,DFO/DIVC为1.03±0.22;晚孕期(29~36周)胎儿共31胎,DFO为(5.20±0.43)mm,DIVC为(5.90±1.33)mm,DFO/DIVC为0.92±0.17。DFO/DIVC均值95%可信区间为(0.98,1.04),个体值95%正常参考值范围为(0.80,1.44)。结论采用实时三维超声Biplane技术可获得胎儿心脏下腔静脉右心房入口冠状切面,可观察到下腔静脉血流在进入右心房后正对房间隔上缘,并被房间隔上缘分为两部分的血流走行全程,在评价房间隔卵圆孔处血流方面具有重要意义。
[Abstract]:Objective to evaluate the value of real-time three-dimensional ultrasound biplane (Bi-plane) in the evaluation of fetal blood flow at the foramen ovale. Methods the coronal section of right atrium of inferior vena cava was obtained from 186 normal fetuses without internal and external malformation. The ratio (DFO/DIVC) of the internal diameter of foramen ovale (DFO) and the right atrium of inferior vena cava (DIVC),) was measured on this section, and the correlation between the ratio and gestational week was analyzed. Results there was no significant correlation between DFO/DIVC and gestational weeks (r = -0.228 P 0.05). The DFO of 155 fetuses was (4.46 卤0.57) mm DIVC was (4.55 卤1.22) mm DFO-DIVC was (1.03 卤0.22) in the second trimester and (5.20 卤0.43) mm DFODIVC was (5.90 卤1.33) mm DFODIVC of (5.90 卤1.33) mm DFODIVC (0.92 卤1.33) in the second trimester, and the normal reference range of 95% normal reference value was (0.801.44). Conclusion the right atrium of the inferior vena cava of the fetus can be obtained by real-time three-dimensional Biplane technique. The inferior vena cava blood flow can be observed on the superior edge of the atrial septum after entering the right atrium. The blood flow is divided into two parts by the upper edge of the atrial septum, which is of great significance in evaluating the blood flow at the atrial septal foramen ovale.
【作者单位】：中国医科大学附属盛京医院超声科;辽阳石化总医院电诊科;
【分类号】：R540.45;R714.5

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