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Inicio Radiología (English Edition) New reference nomograms for the study of ventricular size in preterm infants
Journal Information
Vol. 66. Issue 3.
Pages 219-227 (May - June 2024)
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Vol. 66. Issue 3.
Pages 219-227 (May - June 2024)
Original articles
New reference nomograms for the study of ventricular size in preterm infants
Nuevos nomogramas de referencia para el estudio de la talla ventricular en neonatos pretérmino
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43
A. Navarro-Ballester
Corresponding author
antonio.navarroball@gmail.com

Corresponding author.
, R.E. Rovira-Ferrando, J.M. Ródenas-Hernández, A. Bandura, P. Fernández-García, S.F. Marco Doménech
Departamento de Radiología, Hospital General Universitario de Castelló, Castellón de la Plana, Spain
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Figures (5)
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Tables (3)
Table 1. Two-factor repeated measures ANOVA. Analysis of inter- and intra-observer reliability (n = 10 patients).
Table 2. Mean, minimum (min) and maximum (max) Levene index (LI) value, frontal horn width (FHW), Evans index (EI) according to gestational age (GA) (weeks).
Table 3. Correlation of different variables with biparietal diameter using the Pearson correlation coefficient.
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Abstract
Introduction

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.

Conclusion

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.

Keywords:
Hydrocephalus
Infant
Newborn
Ultrasonography
Resumen
Introducción

La ecografía cerebral transfontanelar es una herramienta fundamental para monitorizar el tamaño de los ventrículos en los recién nacidos prematuros y tiene como ventajas su accesibilidad y que no usa radiaciones ionizantes. Al considerar el tamaño ventricular normal, es esencial tener medidas de referencia basadas en poblaciones de la misma edad. El objetivo de este artículo es presentar las medidas de referencia obtenidas de una muestra de neonatos prematuros de nuestro centro.

Métodos

Se realizó un estudio observacional retrospectivo. Se obtuvieron mediciones del índice de Levene, grosor del cuerno frontal e índice de Evans en recién nacidos prematuros de 25 a 45 semanas, durante un período de 5 años, entre enero de 2017 y diciembre de 2021. Después de aplicar los criterios de exclusión, se tomó una muestra de 199 pacientes y Se obtuvieron 350 ecografías. Para la comparación de muestras se utilizó la prueba t de muestras independientes y la prueba de Mann-Whitney.

Resultados

La distribución de los índices de Levene derecho e izquierdo fue normal (prueba de Shapiro-Wilk con p = 0,16 y 0,05, respectivamente), a diferencia de la distribución del grosor de los cuernos frontales (p < 0,05 en ambos lados). No se detectaron diferencias significativas entre sexos (p = 0,08). Se encontró una correlación lineal entre el diámetro biparietal y el índice de Levene.

Discusión

A partir de los resultados obtenidos en nuestro estudio, presentamos tablas de referencia del tamaño ventricular, con los percentiles 3,25,50,75 y 97, siendo las primeras realizadas en nuestro país.

Palabras clave:
Hidrocefalia
Lactante
Recién nacido
Ultrasonografía

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