[Blood hypertension in childrens. Guideliness for diagnosis and treatment. Part 1. Pediatric Nephrology Branch, Chilean Pediatric Society]. / Hipertensión arterial en la infancia. Recomendaciones para su diagnóstico y tratamiento. Parte 1. Rama de Nefrología Infantil, Sociedad Chilena de Pediatría.

Hypertension (HT) in children and adolescents is an important pathology, associated with modi fiable and non-modifiable factors. In the pediatric, the prevalence of HT is around 3.5%, and it in creases progressively with age. The ideal method for diagnosis is the measurement of blood pressure (BP) with auscultatory instruments. As published by the American Academy of Pediatrics (AAP), BP should be measured in children over 3 years of age once a year, and in children under 3 years of age, if it presents risk factors. Once HT has been confirmed, the evaluation should be directed towards the detection of a causative disease and the search for risk factors associated with primary HTN. The goal of treating primary and secondary HTN in pediatrics is to achieve a level of BP that decreases the risk of target organ damage. The therapeutic options include: treatment according to specific etiology, non-pharmacological and pharmacological. This document is the product of a collaborative effort of the Nephrology Branch of the Chilean Society of Pediatrics with the aim of helping pediatricians and pediatric nephrologists in the diagnosis and treatment of hypertension in childhood. In this first part, the recommendations of the diagnosis and study are presented.

Free Water Transport and Its Association with Cardiovascular Status in Children on Peritoneal Dialysis.

Background:Volume overload is one of the most important factors associated with left ventricular hypertrophy (LVH) and cardiovascular disease in chronic peritoneal dialysis (PD) patients. MiniPET is a reliable tool to evaluate free water transport (FWT). In a clinical setting, the significance of FWT has not been evaluated in terms of outcome in children on PD. The objective was to define a FWT value of clinical significance in children on PD, fixing its relationship to left ventricular mass index (LVMI) as a well-known outcome parameter.Methods:MiniPET was performed with 3.86% glucose, 1-h long, to measure FWT in PD patients > 6 years old. An echocardiogram (ECG) was performed within 2 months of the MiniPET. Left ventricular hypertrophy was defined as LVMI ≥ 38.6 g/height2.7 (95th percentile). Receiver operating characteristic curve (ROC) analysis was used to determine the cut-off value of FWT searching the highest sensitivity and specificity to differentiate patients with normal/abnormal LVMI. A p < 0.05 was considered significant.Results:Forty-six studies were performed on 32 patients, 16 males; mean age 11.59 ± 3.07 years. Mean normalized FWT (nFWT) was 144.4 ± 84.8 mL/m2, corresponding to 46.7% of total ultrafiltration. Mean LVMI was 42 ± 11.3 g/m2.7 with a negative correlation to nFWT (p < 0.01). Eighteen out of 32 patients had LVH. The ROC analysis (nFWT vs LVMI) showed an area under the curve of 0.71 (95% confidence interval [CI], 0.53 - 0.89; p = 0.04), allowing a cut-off nFWT value of 110 mL/m2 to be defined, dividing the population into 2 groups of patients according to the LVMI cut-off value of 38,6 g/m2.7.Conclusions:The nFWT showed an inverse correlation to LVMI. A nFWT value < 110 mL/m2 was significantly associated with LVH. The negative relationship observed between nFWT and LVMI, and the cut-off level for nFWT according to the 95th percentile of LVMI, suggest that the regular evaluation of nFWT could become a useful tool in assessing the capacity of PD treatment to keep patients' volume status under control, avoiding cardiovascular impairment.

Hipertensión arterial en la infancia: recomendaciones para su diagnóstico y tratamiento. Parte 1. Rama de Nefrología Infantil, Sociedad Chilena de Pediatría / Blood hypertension in childrens: guideliness for diagnosis and treatment. Part 1. Pediatric Nephrology Branch, Chilean Pediatric Society

Resumen: La hipertensión arterial (HTA) en niños y adolescentes es una patología importante, asociada a fac tores modificables y no modificables. En la edad pediátrica, la prevalencia de la HTA es de alrededor de un 3,5%, y va aumentando progresivamente con la edad. El método ideal para su diagnóstico es la medición de la presión arterial (PA) con instrumentos auscultatorios. Según lo publicado por la Academia Americana de Pediatría (AAP) la PA debe ser medida en niños mayores de 3 años una vez al año, y en niños menores de 3 años, si presenta factores de riesgo. Una vez confirmada la HTA, la evaluación debe dirigirse hacia la detección de una enfermedad causal y a la búsqueda de factores de riesgo asociados a una HTA primaria. El objetivo del tratamiento de la HTA primaria y secundaria en pediatría es lograr un nivel de PA que disminuya el riesgo de daño de órgano blanco. Las opcio nes terapéuticas incluyen: tratamiento según etiología específica, no farmacológico y farmacológico. Este documento es producto de un esfuerzo colaborativo de la Rama de Nefrología de la Sociedad Chilena de Pediatría con el objetivo de ayudar a los pediatras y nefrólogos infantiles en el diagnóstico y tratamiento de la HTA en la infancia. En esta primera parte, se presentan las recomendaciones del diagnóstico y estudio.

Abstract: Hypertension (HT) in children and adolescents is an important pathology, associated with modi fiable and non-modifiable factors. In the pediatric, the prevalence of HT is around 3.5%, and it in creases progressively with age. The ideal method for diagnosis is the measurement of blood pressure (BP) with auscultatory instruments. As published by the American Academy of Pediatrics (AAP), BP should be measured in children over 3 years of age once a year, and in children under 3 years of age, if it presents risk factors. Once HT has been confirmed, the evaluation should be directed towards the detection of a causative disease and the search for risk factors associated with primary HTN. The goal of treating primary and secondary HTN in pediatrics is to achieve a level of BP that decreases the risk of target organ damage. The therapeutic options include: treatment according to specific etiology, non-pharmacological and pharmacological. This document is the product of a collaborative effort of the Nephrology Branch of the Chilean Society of Pediatrics with the aim of helping pediatricians and pediatric nephrologists in the diagnosis and treatment of hypertension in childhood. In this first part, the recommendations of the diagnosis and study are presented.

[Adherence to immunization among children with special health care needs]. / Adherencia a las inmunizaciones en niños con necesidades de cuidado médico especial.

UNLABELLED: The proportion of children with special health care needs (CSHCN) due to chronic illness is increasing. They have a high risk of complications due to infectious diseases. OBJECTIVE: To describe adherence to the Expanded Program of Immunization (EPI) and administration of other expert recommended vaccines in CSHCN. PATIENTS AND METHODS: In a retrospective manner information on chronic disease, EPI vaccines administration, reasons for delays, prescription and administration of additionally recommended vaccines was registered in a cohort of hospitalized CSHCN. RESULTS: Seventy children were analyzed. Thirty (42.9%) had at least one delay in EPI immunization schedule; 40% due to previous hospitalizations, 26.7% due to minor morbidity and 20% due to other unjustified reasons. Forty-nine (70.0%) received prescriptions for additional vaccines, but only 25 actually received them. CONCLUSIONS: CSHCN showed low adherence to EPI and received few additionally recommended vaccines. Every contact with these patients, including hospitalization should be used to update immunizations.