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INTRODUCTION: Breastfeeding appears to protect the onset of obesity in infants. The aim is to know whether breastfeeding duration is associated with the risk of obesity in infants and toddlers aged 12 and 24 months. MATERIAL AND METHODS: Prospective longitudinal study in a cohort of children born in Spain between April 2017 and March 2018 (LAyDI study) in the paediatric primary care system conducted in the framework of the PAPenRed research network. Analysis of breastfeeding duration (group 1: fewer than 6 months; group: more than 6 months) and its association with anthropometric variables. RESULTS: A total of 1495 patients attended the 12 months preventive child health visit and 1073 patients the 24 months visit. We found a statistically significant association between breastfeeding duration and weight-for-age, BMI-for-age and weight-for-length/height at 12 and 24 months; breastfeeding duration of less than 6 months was significantly associated with overweight and obesity (based on BMI-for-age and weight-for-length/height) at ages 12 and 24 months. Maternal pre-pregnancy BMI acted as a modifier on the association between breastfeeding duration and overweight and obesity (based on BMI-for-age). CONCLUSIONS: A breastfeeding duration of less than 6 months is associated with a higher percentage of overweight and obesity at ages 12 and 24 months, although maternal pre-pregnancy BMI modifies this relationship at 24 months.

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BACKGROUND AND OBJECTIVES: Variable diagnostic criteria and growth charts have been used for extrauterine growth restriction (EUGR). The objective was to assess the prevalence and concordance of EUGR in extremely-low-birthweight (ELBW) infants with the most frequent diagnostic criteria and growth charts. MATERIALS AND METHODS: An observational, retrospective and multicenter study was conducted from 2011 to 2020 including ELBW infants from the Spanish SEN1500 Network. EUGR prevalence was calculated at discharge using different definitions: cross-sectional (anthropometry less than the 10th centile), longitudinal (decrease of more than 1 SD from birth to discharge), "true" cross-sectional and "true" longitudinal (using the criteria previously described, excluding infants small for gestational age at birth). Concordance among Fenton, Olsen and INTERGROWTH-21st was assessed with Fleiss' Kappa coefficient. RESULTS: The prevalence of EUGR was variable with the different definitions and growth references studied in the 7914 ELBW infants included. Overall, it was higher with Fenton for all the EUGR criteria studied by weight and length. The agreement among growth charts was substantial (κ > 0.6) for all the definitions except for longitudinal EUGR by weight (moderate, κ = 0.578). CONCLUSIONS: The prevalence of EUGR was variable in our cohort with the different diagnostic criteria and growth charts. The agreement among charts was good for all the definitions of EUGR except longitudinal EUGR by weight.

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Multiple criteria and growth references have been proposed for extrauterine growth restriction (EUGR). We hypothesized that these may impact the diagnosis of EUGR. The objective was to evaluate the prevalence of EUGR with its different definitions and the concordance according to Fenton, Olsen, and INTERGROWTH-21st in very-low-birthweight (VLBW) infants. This is an observational, retrospective, and multicenter study including VLBW infants from the Spanish SEN1500 Network from 2011 to 2020. Patients with major congenital anomalies, embryopathies, and gestational age less than 24 weeks were excluded. EUGR prevalence was calculated at discharge with cross-sectional, longitudinal, "true" cross-sectional, and "true" longitudinal definitions. Concordance was assessed with Fleiss' kappa coefficient. 23582 VLBW infants from 77 NICUs were included. In total, 50.4% were men with a median of gestational age of 29 (4) weeks. The prevalence of EUGR (cross-sectional, longitudinal, and "true") was variable for weight, length, and head circumference. Overall, the prevalence was higher with Fenton and lower with Olsen (cross-sectional and "true" cross-sectional) and INTERGROWTH-21st (longitudinal and "true" longitudinal). Agreement among the charts by weight was good only for cross-sectional EUGR and moderate for longitudinal, "true" cross-sectional, and "true" longitudinal. Concordance was good or very good for EUGR by length and head circumference.Conclusions: The prevalence of EUGR with the most commonly used definitions was variable in the cohort. Agreement among growth charts was moderate for all the definitions of EUGR by weight except cross-sectional and good or very good for length and head circumference. The choice of reference chart can impact the establishment of the diagnosis of EUGR. What is known: • EUGR has been defined in the literature and daily practice considering weight, length and head circumference with multiple criteria (cross-sectional, longitudinal, and "true" definition) • Different growth charts have been used for EUGR diagnosis What is new: • Prevalence of EUGR is variable depending on the definition and growth chart used in our cohort of VLBW infants • For the most frequently EUGR criteria used, traditionally considering weight, concordance among Fenton, Olsen and INTERGROWTH-21st growth charts is only moderate for all the definitions of EUGR by weight except cross-sectional definition. Concordance among the charts is good or very good for the different criteria of EUGR by head circumference and length.

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Extrauterine growth restriction (EUGR) has been used in the literature and clinical practice to describe inadequate growth in preterm infants. Significant variability is seen in the criteria for EUGR, with no standard definition reached to date. Moreover, no consensus on the optimal timing for assessment or the ideal growth monitoring tool has been achieved, and an ongoing debate persists on the appropriate terminology to express poor postnatal growth. To ensure an adequate understanding of growth and early intervention in preterm infants at higher risk, it is critical to relate the diagnostic criteria of EUGR to the ability to predict adverse outcomes, such as neurodevelopmental outcomes. This narrative review was conducted to present evidence that evaluates neurodevelopmental outcomes in preterm infants with EUGR, comparing separately the different definitions of this concept by weight (cross-sectional, longitudinal and "true" EUGR). In this article, we highlight the challenges of comparing various published studies on the subject, even when subclassifying by the definition of EUGR, due to the significant variability on the criteria used for each definition and for the evaluation of neurodevelopmental outcomes in different papers. This heterogeneity compromises the obtention of a single firm conclusion on the relation between different definitions of EUGR and adverse neurodevelopmental outcomes.

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Objetivo: Conocer estadísticas reales sobre lactancia materna en España, así como factores socioculturales y perinatales que afectan a su inicio y mantenimiento. Diseño: Estudio prospectivo, multicéntrico, longitudinal, de ámbito nacional (estudio LAyDI). Sitio: Consulta de pediatras de atención primaria. Participantes: Cohorte de recién nacidos entre abril de 2017 y marzo de 2018 en España que se siguieron hasta los dos años en ocho visitas. Medidas principales: Se analizaron las tasas de los diferentes tipos de lactancia en cada visita y también se analizaron variables relacionadas con la gestación, el parto, el período neonatal, sociales, económicas y biológicas. Resultados: Muestra inicial de 1.946 (50,1% varones). El 90,7% decidieron iniciar lactancia materna al nacimiento. La cifra de lactancia materna exclusiva (LME) fue del 66,4% a los 15días y del 35,2% a los 6meses. Cualquier tipo de lactancia materna (lactancia materna total [LMT]) a los 6meses fue del 61,7%. La supervivencia de LMT presentó una mediana de 6,0meses (IC95%: 6,0-6,1). Variables relacionadas con LME a los 15días: hijos previos, nivel de educación de madre, ausencia de enfermedad durante el embarazo, no separación madre e hijo al nacer, no utilización de chupete, no existencia de problemas en pezones, y momento de decisión tipo lactancia. Variables relacionadas con mayor duración LMT son: la relación mayor de 5años de los padres, no usar de chupete, colecho al mes de vida, decidir lactancia materna antes del embarazo, recibir información sobre lactancia durante el embarazo y utilizar apoyo de asociaciones. Conclusiones: El abandono temprano de la lactancia materna es un problema importante en las sociedades occidentales. Existen factores sobre los que se puede actuar para mejorar resultados.(AU)

Objective: To find out actual statistics on breastfeeding in Spain, as well as sociocultural and perinatal factors that affect its initiation and maintenance. Design: Prospective, multicentre, longitudinal, nationwide study (XXX study). Site: Primary care paediatricians’ office. Participants: Cohort of newborns born between April 2017 and March 2018 in Spain who were followed up to two years of age in 8 visits. Main measures: Rates of different types of breastfeeding were analysed at each visit and variables related to gestation, delivery, neonatal period, social, economic and biological variables were also analysed. Results: Initial sample of 1946 (50.1% male). 90.7% decided to initiate breastfeeding at birth. Exclusive breastfeeding (EBF) was 66.4% at 15days and 35.2% at 6months. Any type of breastfeeding (total breastfeeding [TBF]) at 6months was 61.7%. Median survival from TBF was 6.0months (95%CI: 6.0-6.1). Variables related to EBF at 15days: previous children, mother's level of education, absence of illness during pregnancy, no separation of mother and child at birth, no dummy use, no nipple problems, and time of decision to breastfeed. Variables related to longer duration of TBF: relationship of parents older than 5years, no dummy use, co-sleeping at one month of life, deciding to breastfeed before pregnancy, receiving information on breastfeeding during pregnancy and using support from associations. Conclusions: Early abandonment of breastfeeding is a major problem in Western societies. There are factors that can be worked on to improve outcomes.(AU)

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OBJECTIVE: To find out actual statistics on breastfeeding in Spain, as well as sociocultural and perinatal factors that affect its initiation and maintenance. DESIGN: Prospective, multicentre, longitudinal, nationwide study (XXX study). SITE: Primary care paediatricians' office. PARTICIPANTS: Cohort of newborns born between April 2017 and March 2018 in Spain who were followed up to two years of age in 8 visits. MAIN MEASURES: Rates of different types of breastfeeding were analysed at each visit and variables related to gestation, delivery, neonatal period, social, economic and biological variables were also analysed. RESULTS: Initial sample of 1946 (50.1% male). 90.7% decided to initiate breastfeeding at birth. Exclusive breastfeeding (EBF) was 66.4% at 15days and 35.2% at 6months. Any type of breastfeeding (total breastfeeding [TBF]) at 6months was 61.7%. Median survival from TBF was 6.0months (95%CI: 6.0-6.1). Variables related to EBF at 15days: previous children, mother's level of education, absence of illness during pregnancy, no separation of mother and child at birth, no dummy use, no nipple problems, and time of decision to breastfeed. Variables related to longer duration of TBF: relationship of parents older than 5years, no dummy use, co-sleeping at one month of life, deciding to breastfeed before pregnancy, receiving information on breastfeeding during pregnancy and using support from associations. CONCLUSIONS: Early abandonment of breastfeeding is a major problem in Western societies. There are factors that can be worked on to improve outcomes.

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Growth in the neonatal period is critical for the neurodevelopment of the individual, both in low- and middle-income countries [...].

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La realización de cualquier investigación con seres humanos o sus muestras biológicas requiere una valoración ética previa con el fin de evitar riesgos y problemas a todos los actores del proceso. La legislación al respecto es muy amplia, y hace hincapié en la preservación de los derechos de los pacientes en relación con los principios universales de autonomía, beneficencia y justicia. En este manuscrito se revisan las normativas sobre ensayos clínicos, estudios observacionales con medicamentos, proyectos de biobanco o cualquier otro tipo de estudio que se pueda realizar en el ámbito de la salud. Así mismo se analiza el papel de los comités de ética en investigación, la protección de datos y las bases de la integridad científica. (AU)

Any research conducted on human beings or human biological samples requires a prior ethical assessment to avoid risks and problems for all involved parties. The legislation in this regard is very broad and emphasizes the safeguarding of patient rights in relation to the universal principles of autonomy, beneficence and justice. The present article reviews the regulations applicable to clinical trials, observational studies with drugs, biobank projects or any other type of study that may be conducted in the health care field. It also addresses the role of research ethics committees, data protection and the foundations of scientific integrity. (AU)

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Any research conducted on human beings or human biological samples requires a prior ethical assessment to avoid risks and problems for all involved parties. The legislation in this regard is very broad and emphasizes the safeguarding of patient rights in relation to the universal principles of autonomy, beneficence and justice. The present article reviews the regulations applicable to clinical trials, observational studies with drugs, biobank projects or any other type of study that may be conducted in the health care field. It also addresses the role of research ethics committees, data protection and the foundations of scientific integrity.

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This prospective single-center study was designed to assess the clinical utility of the FilmArray® blood culture identification (BCID) panel for improving the diagnostic accuracy in neonatal sepsis. Results obtained using the FilmArray® BCID panel were correlated with results of blood culture in all consecutive neonates with suspicion of early-onset (EOS) and late-onset sepsis (LOS) attended in our service over a two-year period. A total of 102 blood cultures from 92 neonates were included, 69 (67.5%) in cases of EOS and 33 (32.3%) in LOS. The FilmArray® BCID panel was performed in negative culture bottles at a median of 10 h of blood culture incubation (IQR 8-20), without differences by the type of sepsis. The FilmArray® BCID panel showed a 66.7% sensitivity, 100% specificity, 100% positive predictive value, and 95.7% negative predictive value. There were four false-negative cases, three of which were Streptococcus epidermidis in neonates with LOS, and there was one case of Granulicatella adiacens in one neonate with EOS. We conclude that the use of the FilmArray® BCID panel in negative blood cultures from neonates with clinical suspicion of sepsis is useful in decision-making of starting or early withdrawal of empirical antimicrobials because of the high specificity and negative predictive values of this assay.

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Infants might be exposed to pain during their admissions in the neonatal intensive care unit [NICU], both from their underlying conditions and several invasive procedures required during their stay. Considering the particularities of this population, recognition and adequate management of pain continues to be a challenge for neonatologists and investigators. Diverse therapies are available for treatment, including non-pharmacological pain management measures and pharmacological agents (sucrose, opioids, midazolam, acetaminophen, topical agents…) and research continues. In recent years one of the most promising drugs for analgesia has been dexmedetomidine, an alpha-2 adrenergic receptor agonist. It has shown a promising efficacy and safety profile as it produces anxiolysis, sedation and analgesia without respiratory depression. Moreover, studies have shown a neuroprotective role in animal models which could be beneficial to neonatal population, especially in preterm newborns. Side effects of this therapy are mainly cardiovascular, but in most studies published, those were not severe and did not require specific therapeutic measures for their resolution. The main objective of this article is to summarize the existing literature on neonatal pain management strategies available and review the efficacy of dexmedetomidine as a new therapy with increasing use in the NICU.

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The prevalence of postnatal growth faltering (PGF) in preterm infants with very low birth weight (VLBW) (<1500 g) is a universal problem. Growth improvement is expected as neonatal care is optimized. Objectives: To determine if there has been a decrease in the prevalence of PGF and an improvement in height at 2 years in appropriate for gestational age VLBW children in the last two decades. Methods: Clinical descriptive retrospective analysis of neonatal somatometry at birth and at two-year corrected age in VLBW preterm infants. Small for gestational age were excluded. Two cohorts (2002−2006, n = 112; and 2013−2017, n = 92) were compared. Results. In the second five-year period, a decrease in prevalence of PGF was observed (36.6% vs. 22.8%, p = 0.033), an increase in growth rate in the first 28 days (5.22 (4.35−6.09) g/kg/day vs. 11.38 (10.61−12.15) g/kg/day, p < 0.0001) and an increase in height standard deviation (SD) at 2 years (−1.12 (−1.35−−0.91) vs. −0.74 (−0.99−−0.49) p = 0.023). Probability of short stature at 2 years was directly related to daily weight gain in the first 28 days. Conclusions: when comparing two five-year periods in the last two decades, growth in VLBW preterm infants has improved, both during neonatal period and at two years of age.

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Introducción: No existe consenso sobre qué gráfica neonatal es mejor utilizar en niños con muy bajo peso al nacer (MBPN). El objetivo del estudio fue comparar las gráficas de Fenton 2013 e Intergrowth-21st (IW-21) con base en su capacidad predictora de la somatometría a los dos años, así como analizar factores relacionados con talla baja a los dos años. Material y métodos: Cohorte de niños con MBPN nacidos entre 2002-2017. Se analizó la asociación entre la somatometría neonatal (z-score por Fenton e IW-21) y el riesgo de talla baja (< -2 desviación estándar [DS]), perímetro craneal < -2 DS y desnutrición a los 2 años (IMC < -2 DS) (gráficas OMS). Resultados: Se incluyeron 513 niños con una edad gestacional media de 30,05 ± 2,5 semanas. El z-score del peso al nacimiento y al alta por Fenton y por IW-21 resultaron útiles para predecir riesgo de talla baja y desnutrición a los dos años (sin diferencias en el AUC de las curvas ROC), siendo el z-score al alta útil además para predecir perímetro craneal < -2D. A los dos años, la prevalencia de talla baja, perímetro craneal < -2 DS, y desnutrición fue del 17,2, 4,1 y 6,1%, respectivamente. El bajo peso para la edad gestacional y la duración del ingreso neonatal se identificaron como factores de riesgo independientes para talla baja a los dos años. Conclusiones: El z-score peso al alta resulta útil para predecir riesgo de talla baja, desnutrición y perímetro craneal < -2 DS a los dos años en niños con muy bajo peso al nacer, sin diferencias estadísticas entre utilizar las gráficas de Fenton o IW-21. (AU)

Introduction: There is no consensus on which neonatal chart is best to use in very low birth weight (VLBW) infants. The aim of the study was to compare the Fenton 2013 and Intergrowth-21st (IW-21) charts based on their predictive ability for somatometry at 2 years, as well as to analyze factors related to short stature at 2 years. Material and methods: Cohort of children with VLBW born in 2002–2017. Association between neonatal somatometry (z-score by Fenton and IW-21) and risk of short stature (< −2 DS), head circumference < −2 DS and malnutrition at 2 years (BMI < −2 DS) was analyzed (WHO charts). Results: 513 children with a mean gestational age of 30.05 ± 2.5 weeks were included. Birth and discharge weight z-score by Fenton and IW-21 were useful for predicting risk of short stature and malnutrition at 2 years (without differences in the AUC of the ROC curves). Weight z-score at discharge was also useful for predicting head circumference < −2 DS. At 2 years, prevalence of short stature, head circumference < −2 DS, and malnutrition was 17.2, 4.1, and 6.1%, respectively. Low weight for gestational age and length of stay were identified as independent risk factors for short stature at 2 years. Conclusions: Discharge weight z-score is useful for predicting risk of short stature, malnutrition and head circumference < −2 DS at 2 years in very low birth weight children, with no statistical difference between using Fenton or IW-21 charts. (AU)

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INTRODUCTION: There is no consensus on which neonatal chart is best to use in very low birth weight (VLBW) infants. The aim of the study was to compare the Fenton 2013 and Intergrowth-21st (IW-21) charts based on their predictive ability for somatometry at 2 years, as well as to analyze factors related to short stature at 2 years. MATERIAL AND METHODS: Cohort of children with VLBW born between 2002 and 2017. Association between neonatal somatometry (z-score by Fenton and IW-21) and risk of short stature (<-2 DS), head circumference <-2 DS and malnutrition at 2 years (BMI < -2 DS) was analyzed (WHO charts). RESULTS: 513 children with a mean gestational age of 30.05 ± 2.5 weeks were included. Birth and discharge weight z-score by Fenton and IW-21 were useful for predicting risk of short stature and malnutrition at 2 years (without differences in the AUC of the ROC curves). Weight z-score at discharge was also useful for predicting head circumference < -2 DS. At 2 years, prevalence of short stature, head circumference < -2 DS, and malnutrition was 17.2, 4.1, and 6.1%, respectively. Low weight for gestational age and length of stay were identified as independent risk factors for short stature at 2 years. CONCLUSIONS: Discharge weight z-score is useful for predicting risk of short stature, malnutrition and head circumference < -2 DS at 2 years in very low birth weight children, with no statistical difference between using Fenton or IW-21 charts.

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Background: The aim of this study was to evaluate the usefulness of C-Reactive Protein (CRP), Procalcitonin (PCT), and Interleukine 6 (IL6) biomarkers in predicting the existence of high-risk episodes (HRE) during the first 24 h of fever in pediatric cancer patients. HRE were defined as the presence of Gram-negative bloodstream infections or Systemic Inflammatory Response Syndrome. Methods: The study included 103 consecutive fever episodes in 44 hemato-oncological pediatric patients, from whom samples for biomarkers were taken upon initial evaluation (CRP-1, PCT-1 and IL6-1) and then between 12 and 24 h afterward (CRP-2, PCT-2 and IL6-2). Results: An IL6-1 value higher than 164 pg/mL showed an area under the curve (AUC) of 0.890 (0.791−0.989) and OR of 48.68 (7.92−951.42, p < 0.001) to detect HRE in multivariate analysis. A PCT-1 higher than 0.32 ng/mL showed an AUC of 0.805 (0.700−0.910) and OR of 4.55 (0.90−27.84, p = 0.076). A PCT-2 higher than 0.94 ng/mL showed an AUC of 0.836 (0.725−0.947) and OR of 13.01 (1.82−149.13, p = 0.018), and an increase in CRP between the first and second sample (CRP-2vs1) higher than 291% also showed an AUC of 0.785 (0.655−0.915) and OR of 31.09 (4.87−355.33, p = 0.001). Conclusions: IL6-1, PCT-2, and CRP-2vs1 showed a strong and independent correlation with HREs in pediatric cancer patients. CRP variations over the first 24 h provide an improvement in predictive models that are especially useful if IL-6 and PCT are not available.

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Monitoring of antibiotic prescription and consumption behavior is crucial. The Access, Watch, and Reserve (AWaRe) classification of antibiotics has been recently introduced in order to measure and improve patterns of antibiotic use. In this study, retrospective data about systemic antibiotic consumption (expressed in defined daily dose per 1000 inhabitants per day (DID)) in pediatric outpatients in a region in northern Spain (around 100,000 children up to 14 years old) from 2005 to 2018 were analyzed and compared with antibiotic consumption in general population in Spain. The pattern of use was analyzed by the percentage of the current AWaRe categories, the Access-to-Watch index, and the amoxicillin index. Data were calculated annually and compared into two periods. Mean antibiotic consumption in pediatric outpatients was 14.0 DID (CI 95% 13.38-14.62). It remained stable throughout the study and was lower than consumption in general population in Spain, particularly from 2016. Changes in the consumption of the main active principles have led to an improvement in the three metrics of the pattern of use. It is important to have a thorough knowledge of the methodology applied in studies about antibiotic consumption. There is a lack of an optimal standardized metric for the pediatric population.

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Introducción: El consumo de antibióticos en España es elevado y más del 90% de las prescripciones se realizan en ámbito extrahospitalario. La exposición a antibióticos en la edad infantil es alta. El objetivo de este estudio es describir la evolución del consumo extrahospitalario de antibióticos en la población pediátrica del Principado de Asturias entre 2005 y 2018.Material y métodos: Estudio descriptivo y retrospectivo del consumo de antibacterianos de uso sistémico (grupo J01 de la clasificación ATC, Anatomical Therapeutic Chemical Classification) en ámbito extrahospitalario en la población pediátrica (0-13 años) del Principado de Asturias entre 2005 y 2018. Se compara el consumo, medido en número de dosis diarias definidas (DDD) por 1.000 habitantes y día (DHD), en 3 periodos de tiempo.Resultados: El consumo medio de antibacterianos en la población pediátrica asturiana (2005-2018) fue de 14 DHD (IC95% 13,4-14,6), con un aumento hasta 2009 (15,2 DHD) y descenso a partir de 2015 (11,9 DHD en 2018). A lo largo del estudio se detectó: 1) un aumento del consumo de amoxicilina (p=0,027), que supera al de amoxicilina-clavulánico desde el año 2011; 2) un consumo estable de macrólidos, con un aumento de azitromicina (p<0,001) y un descenso de claritromicina (p=0,001); 3) un descenso del consumo de cefalosporinas (p<0,001); 4) un aumento del consumo de quinolonas (p=0,002).Conclusiones: El consumo de antibióticos a nivel extrahospitalario en la población pediátrica del Principado de Asturias entre los años 2005 y 2018 ha experimentado un descenso mantenido en los últimos años y una mejora evolutiva del patrón de uso. (AU)

Introduction: Data about consumption of antibiotics in Spain are worrisome. They are mainly prescribed in the community sector and there is a high exposure to antibiotics in the pediatric population. The aim of this study is to describe the evolution of antibiotic consumption in the pediatric population of Asturias during 2005-2018 period.Material and methods: Retrospective and descriptive study using data about consumption of antibacterial agents for systemic use (J01 group of the Anatomical Therapeutic Chemical Classification) in pediatric outpatients in Principado de Asturias between 2005 and 2018. Data, expressed as defined daily dose (DDD) per 1000 inhabitants per day (DID), in three periods were compared.Results: Mean antibiotic consumption in pediatric outpatients in Principado de Asturias (2005-2018) was 14 DID (CI95% 13.4-14.6). Consumption increased until 2009 (15.2 DID) and decreased from 2015 onwards (11.9 DID in 2018). Remarkable data along the study were: 1) increase in amoxicillin consumption (p=0.027), that have exceeded that of amoxicillin-clavulanate since 2011; 2) steady consumption of macrolides, with an increase in azithromycin (p<0.001) and a decrease in clarithromycin (p=0.001); 3) reduction of cephalosporins consumption (p<0.001); 4) increase in quinolones consumption (p=0.002).Conclusions: Global antibiotic consumption in pediatric outpatients in Principado de Asturias between 2005 and 2018 has experienced a constant decrease lately and an improvement in patterns of antibacterial use. (AU)

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We investigated the kinetics of CRP, PCT, IL-6 and MR-proADM in a cohort of consecutive febrile patients with cancer in order to test the hypothesis that higher plasma concentrations and the absence of a rapid decrease in peak values would be associated with disease severity. (1) Method: A prospective descriptive and analytical study of patients with cancer and fever (≤18 years of age) at a University Hospital was carried out between January 2018 and December 2019. Information collected: sex, age, diagnosis, date and symptoms at diagnosis and medical history. The episodes were classified into three groups: bacterial infection, non-bacterial infection and systemic inflammatory response syndrome (SIRS). (2) Results: One hundred and thirty-four episodes were included. Bacterial infection criteria were met in 38 episodes. Biomarkers were measured at four different points: baseline, at 12-24 h, at 25-48 h and at 49-72 h. All the biomarkers evaluated decreased after the peak level was reached. IL-6 and MR-proADM showed a trend towards higher levels in the SIRS group although this rise was statistically significant only for IL-6 (p < 0.005). Bacterial infections more frequently presented values of PCT above the cut-off point (>0.5 ng/mL) at 12-24 h. (3) Conclusion: In our experience, IL-6 kinetics is faster than PCT kinetics and both are faster than CRP in patients with fever and cancer who present a good outcome. Patients with a good evolution show a rapid increase and decrease of PCT and particularly of IL-6 levels.

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INTRODUCTION: Data about consumption of antibiotics in Spain are worrisome. They are mainly prescribed in the community sector and there is a high exposure to antibiotics in the pediatric population. The aim of this study is to describe the evolution of antibiotic consumption in the pediatric population of Asturias during 2005-2018 period. METHODS: Retrospective and descriptive study using data about consumption of antibacterial agents for systemic use (J01 group of the Anatomical Therapeutic Chemical Classification) in pediatric outpatients in Asturias between 2005 and 2018. Data, expressed as defined daily dose (DDD) per 1000 inhabitants per day (DID), in three periods were compared. RESULTS: Mean antibiotic consumption in pediatric outpatients in Asturias (2005-2018) was 14 DID (CI95% 13.4-14.6). Consumption increased until 2009 (15.2 DID) and decreased from 2015 onwards (11.9 DID in 2018). Remarkable data along the study were: 1) increase in amoxicillin consumption (p = 0.027), that have exceeded that of amoxicillin-clavulanate since 2011; 2) steady consumption of macrolides, with an increase in azithromycin (p < 0.001) and a decrease in clarithromycin (p = 0.001); 3) reduction of cephalosporins consumption (p < 0.001); 4) increase in quinolones consumption (p = 0.002). CONCLUSIONS: Global antibiotic consumption in pediatric outpatients in Asturias between 2005 and 2018 has experienced a constant decrease lately and an improvement in patterns of antibacterial use.

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