周维,赵博文,王蓓,彭晓慧,潘美,胡晚育,泮翔.Z评分评价正常中晚孕期胎儿主动脉和肺动脉内径增长[J].中国医学影像技术,2017,33(11):1684~1687 |
Z评分评价正常中晚孕期胎儿主动脉和肺动脉内径增长 |
Z-scores in evaluation of aortic and pulmonary diameter growth in normal fetuses of second and late trimesters |
投稿时间:2017-01-06 修订日期:2017-09-10 |
DOI:10.13929/j.1003-3289.201701033 |
中文关键词: 主动脉 肺动脉 胎儿 超声心动描记术 发育生物学 Z评分 |
英文关键词:Aorta Pulmonary artery Fetus Echocardiography Developmental biology Z-score |
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中文摘要: |
目的 探讨Z评分对评价正常中晚孕期胎儿主动脉(AO)、肺动脉(PA)内径增长的应用价值。方法 通过前后2次产前超声心动图测量332胎正常胎儿的AO内径及PA内径。以AO内径、PA内径为应变量,胎儿双顶径(BPD)、胎儿股骨长径(FL)、孕周(GA)为自变量,建立回归方程,基于此计算AO、PA的Z评分。比较前后2次超声心动图检查Z评分的差异。结果 首次胎儿超声心动图检查时GA为(25.82±2.27)周(18~35周),第2次检查时GA为(30.61±2.28)周(23~39周)。前后2次胎儿超声心动图检查所测胎儿AO内径、PA内径差异均有统计学意义(P均<0.05)。2次超声心动图检查的AO内径及PA内径均随GA、BPD及FL的增长而增长。同一孕妇胎儿AO及PA的Z评分随GA、BPD及FL的增长而相对稳定。前后2次产前超声心动图检查胎儿AO、PA的Z评分的差异均无统计学意义(P均>0.05)。结论 正常胎儿AO和PA内径的增长与生物学参数的增长呈正相关,但Z-评分在中晚孕期相对保持恒定。 |
英文摘要: |
Objective To explore the application value of Z-scores in evaluating growth of aorta (AO) and pulmonary artery (PA) diameter. Methods AO and PA diameters in 332 normal fetuses were measured twice using fetal echocardiography. Z-scores of AO and PA were obtained based on a simple linear equation using gestational age (GA), biparietal diameter (BPD) and femur length (FL) as independent variables. The difference of Z-scores calculated by twice examinations was evaluated. Results The gestation ages of the first and the second examinations of fetal echocardiography were (25.82±2.27) weeks (range 18-35 weeks) and (30.61±2.28) weeks (range 23-39 weeks). There were statistical significant differences of AO and PA diameters between the first and the second examinations (both P<0.05). AO and PA diameters increased with the growth of GA in all fetuses obtained using two examinations, whereas there was no obvious change of Z-scores of AO and PA with increasing GA, BPD and FL in individual pregnant woman. No statistical significant difference was found for Z-scores of AO and PA between the first and the second examinations (both P>0.05). Conclusion The growth of AO and PA diameters are positively correlated with the growth of biological parameters in normal fetuses, while Z-scores of AO and PA remain constant in second and late trimesters. |
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