经小脑直径与妊娠中晚期末次月经期的超声相关性

Smriti Mulmi, M. V. Shrestha, S. Pradhan, N. Thapa
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摘要

背景:胎儿生物测量是评估胎龄(GA)的有效方法,以获得良好的产科结局。目的:比较超声测量小脑横径(TCD)与其他先前建立的胎儿超声生物特征参数。方法:在获得伦理许可后,于2020年8月至2021年2月在加德满都医学院放射科进行了一项分析性横断面研究。采用方便抽样技术,纳入已知最后一次月经(LMP)的所有妊娠中期和晚期孕妇。从愿意参与的人那里获得书面知情同意书。排除先天性畸形、多胎妊娠、月经周期不规则和产妇疾病。数据输入和分析使用SPSS v.22。使用了描述性统计,如平均值、标准差和百分比。推论统计(t检验和Pearson相关)也被用来观察不同变量之间的相关性。结果:在参与研究的100名参与者中,63名(63%)为单胎妊娠,无任何先天性异常。平均胎儿心率为144.9±13.6。基于LMP、TCD和其他参数的平均GA分别为30.86±7.76周、31.07±8.45周和29.75±6.61周。在15-28周,所有参数的r值几乎相等。其中,TCD相关性最高(0.888)。在29-40周,r值有相当大的差异。第二准确的相关性与头围有关(r = 0.874)。结论:TCD是不受胎儿生长状况影响的稳定参数,在估计胎龄时可能优于其他参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultrasound correlation of transcerebellar diameter with last menstrual period for gestational age in second and third trimester of pregnancy
Background: Foetal biometry is useful modality in assessment of gestational age (GA) for good obstetric outcome. Objectives: To compare ultrasonographic measurement of transverse cerebellar diameter (TCD) with other previously established foetal ultrasound biometric parameters. Methods: An analytical cross-sectional study was conducted from August 2020 to February 2021 in Department of Radiology at Kathmandu Medical College after ethical clearance. Convenience sampling technique was utilised to include all pregnant women in second and third trimester with known last menstrual period (LMP). Written informed consent was taken from those willing to participate. Congenital malformations, multiple pregnancies, irregular menstrual cycle, and maternal illness were excluded. Data were entered and analysed by using SPSS v.22. Descriptive statistics like mean, standard deviation, and percent were used. Inferential statistics (t- test and Pearson correlation) was also used to see the correlation between different variables. Results: Among 100 participants who participated in the study, 63 (63%) were primigravida with singleton pregnancy without any congenital anomalies. The mean foetal heart rate was 144.9 ± 13.6. The mean GA based on LMP, TCD, and other parameters were 30.86 ± 7.76 weeks, 31.07 ± 8.45 weeks, and 29.75 ± 6.61 weeks respectively. In 15-28 weeks, all parameters had nearly equal r-values. Among all, TCD revealed highest correlation (0.888). In 29-40 weeks, there was considerable difference in r-values. The second most accurate correlation was seen with head circumference (r = 0.874). Conclusion: TCD being stable parameter not affected by foetal growth status maybe preferred over other parameters in estimating foetal gestational age.
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