Abstract：
BACKGROUND: Transfontanellar brain ultrasound is an essential tool for monitoring the size of the ventricles in preterm neonates and has many advantages over other alternative diagnostic techniques, including its accessibility and non-use of ionizing radiation. When considering the normal ventricular size, it is essential to have reference measurements based on age-matched populations. The objective of this article is to present our reference measures, based on a sample of preterm infants that we have studied.
METHODS: A retrospective observational study was conducted. Measurements of the Levene index, frontal horn thickness, and Evans index were obtained in preterm neonates from 25 to 45 weeks, over a period of 5 years, between January 2016 and December 2020. After applying the exclusion criteria, a sample of 199 patients and 350 ultrasound scans were obtained. The independent samples t-test and the Mann-Whitney test were used for the comparison of samples.
RESULTS: The distribution of the right and left Levene indices was normal (Shapiro-Wilk test with p = 0.16 and 0.05, respectively), unlike the thickness distribution of the frontal horns (p < 0.05 on both sides). No significant differences were detected between the sexes (p = 0.08). A linear correlation was found between the biparietal diameter and the Levene index.
CONCLUSIONS: From the results obtained in our study, we present reference tables for ventricular size, with the 3rd, 25th, 50th, 75th, and 97th, being the first ones made in our country.
METHODS: A retrospective observational study was conducted. Measurements of the Levene index, frontal horn thickness, and Evans index were obtained in preterm neonates from 25 to 45 weeks, over a period of 5 years, between January 2016 and December 2020. After applying the exclusion criteria, a sample of 199 patients and 350 ultrasound scans were obtained. The independent samples t-test and the Mann-Whitney test were used for the comparison of samples.
RESULTS: The distribution of the right and left Levene indices was normal (Shapiro-Wilk test with p = 0.16 and 0.05, respectively), unlike the thickness distribution of the frontal horns (p < 0.05 on both sides). No significant differences were detected between the sexes (p = 0.08). A linear correlation was found between the biparietal diameter and the Levene index.
CONCLUSIONS: From the results obtained in our study, we present reference tables for ventricular size, with the 3rd, 25th, 50th, 75th, and 97th, being the first ones made in our country.
摘要：
背景：经font脑超声是监测早产新生儿心室大小的重要工具，与其他替代诊断技术相比，具有许多优势，包括其可及性和不使用电离辐射。当考虑正常的心室大小时，必须根据年龄匹配的人群进行参考测量。本文的目的是提出我们的参考措施，根据我们研究的早产儿样本。
方法：进行回顾性观察性研究。Levene指数的测量，额角厚度,在25至45周的早产儿中获得了Evans指数，在5年的时间里，2016年1月至2020年12月。应用排除标准后，共收集了199例患者的样本和350例超声扫描.采用独立样本t检验和Mann-Whitney检验进行样本比较。
结果：右侧和左侧Levene指数的分布是正常的（Shapiro-Wilk检验，p分别为0.16和0.05），与额角的厚度分布不同（两侧p<0.05）。性别之间没有发现显着差异（p=0.08）。发现双顶直径与Levene指数之间存在线性相关。
结论：从我们的研究中获得的结果来看，我们提供了心室大小的参考表，第三，25日,50岁，75,97号,是我们国家最早制造的。
方法：进行回顾性观察性研究。Levene指数的测量，额角厚度,在25至45周的早产儿中获得了Evans指数，在5年的时间里，2016年1月至2020年12月。应用排除标准后，共收集了199例患者的样本和350例超声扫描.采用独立样本t检验和Mann-Whitney检验进行样本比较。
结果：右侧和左侧Levene指数的分布是正常的（Shapiro-Wilk检验，p分别为0.16和0.05），与额角的厚度分布不同（两侧p<0.05）。性别之间没有发现显着差异（p=0.08）。发现双顶直径与Levene指数之间存在线性相关。
结论：从我们的研究中获得的结果来看，我们提供了心室大小的参考表，第三，25日,50岁，75,97号,是我们国家最早制造的。
