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Background: Controversy between short-term neonatal growth of very low birth-weight preterm (VLBW) and neurodevelopment may be affected by criteria changes of extrauterine growth restriction (EUGR). Objective: to determine if new EUGR criteria imply modifications in the relationship between old criteria and results of neuropsychological tests in preterm children. Patients and methods: 87 VLBW at 5–7 years of age were studied. Neuropsychological assessment included RIST test (Reynolds Intellectual Sctreening Test) and NEPSY-II (NE neuro, PSY psycolgy assessment) tests. The relationships between these tests and the different growth parameters were analyzed. Results: RIST index was correlated with z-score Fenton’s weight (p = 0.004) and length (p = 0.003) and with z-score IGW-21’s (INTERGRWTH-21 Project) weight (p = 0.004) and length (p = 0.003) at neonatal discharge, but not with z-score difference between birth and neonatal discharge in weight, length, and HC for both. We did not find a statistically significant correlation between Fenton or IGW-21 z-scores and scalar data of NEPSY-II subtasks. Conclusion: In our series, neonatal growth influence on neuropsychological tests at the beginning of primary school does not seem robust, except for RIST test. New EUGR criteria do not improve the predictive ability of the old ones.

Arterial Hypertension prevalence (HTN) has significantly increased in paediatric patients, mainly in older children and teenagers. In these subjects the most common type is essential or primary HTN. However, in infants HTN prevalence is significantly lower and is almost always due to secondary causes, which can be potentially severe. Hence the importance of its detection, in order to establish an etiological diagnosis and provide an appropriate treatment, which usually requires a specialist physician. In addition to the technical difficulties of blood pressure measurement in infants, the lack of recommendations to perform a systematic screening in this age range and the absence of well-established normal values turns infancy-onset HTN into a diagnostic and therapeutic challenge for the physician. By means of the exposition of three infancy-onset HTN cases, the aim is to increase the paediatrician’s awareness of this pathology and also to provide information about its diagnostic and therapeutic approach, dealing also with pharmacological measures of treatment. Resumen: La prevalencia de la hipertensión arterial (HTA) ha aumentado considerablemente en la edad pediátrica como consecuencia principal de su detección en niños mayores y adolescentes, en quienes predomina la causa esencial (primaria). En otras etapas de la edad pediátrica la HTA es menos frecuente, en especial en lactantes. En este grupo la HTA obedece casi siempre a causas secundarias, en ocasiones potencialmente graves, por lo que resulta imprescindible detectarla, llevar a cabo un proceso diagnóstico etiológico adecuado y proporcionarle un adecuado tratamiento, que suele requerir de un profesional especializado. A las dificultades técnicas propias de la medición de la presión arterial en los lactantes se añade la ausencia de recomendaciones específicas relacionadas con su identificación sistemática y de valores de normalidad bien establecidos en este rango de edad, por lo que su manejo constituye un reto diagnóstico y terapéutico para el profesional. A través de la exposición de 3 casos de hipertensión detectada en etapa de lactante, se pretende sensibilizar al pediatra sobre esta patología, así como proporcionar información sobre su orientación diagnóstica y terapéutica, incidiendo asimismo en las medidas farmacológicas.