Prospective study on influence of perinatal factors on the development of early neonatal hypoglycemia in late preterm and term infants.

INTRODUCTION AND OBJECTIVE: Neonatal hypoglycemia offers multiple controversies. The study aims to assess the main factors involved in the development of early hypoglycemia in term and late preterm infants, and the implication of different environmental circumstances. METHODS: A prospective cohort study in infants born between 34 0/7 weeks and 36 6/7 weeks of gestation. Three capillary blood glucose determinations were performed during the eight first hours after birth. SAMPLE SIZE: 207, 59 neonates developed hypoglycemia. RESULTS: Prenatal risk factors include gestational diabetes with poor glycemic control, twin pregnancy and gestational age. The presence of meconium amniotic fluid and planned cesarean delivery are associated with a higher probability of hypoglycemia. After birth, skin to skin contact, breastfeeding, soft lightening, and normothermia are described as protective factors. The predictive model that combines the type of lightening, body temperature and the excess of bases level, correctly classifies 98% of the severe hypoglycemia cases, with a high Nagelkerke R2 value (0.645) and specificity of 99.5%. CONCLUSIONS: Postnatal environmental factors seem to be directly related to early hypoglycemia development, so it is essential to support the maternal-child union and breastfeeding. Our results allow better identification of neonates who are not subsidiary to performing blood glucose determinations because they have little risk of developing it.

Estudio prospectivo de factores perinatales asociados a hipoglucemia precoz en el neonato prematuro tardío y a término / Prospective study on influence of perinatal factors on the development of early neonatal hypoglycemia in late-preterm and term infants

Introducción y objetivos: La hipoglucemia neonatal ofrece múltiples controversias. El objetivo del estudio es valorar los principales factores y circunstancias ambientales implicadas en el desarrollo de la hipoglucemia neonatal precoz. Métodos: Estudio analítico prospectivo de una cohorte de recién nacidos entre 34 + 1 y 40 + 6 semanas de edad gestacional. Se realizó una determinación de glucemia capilar a las dos, cuatro y ocho horas de vida. Tamaño muestral: 207; 59 neonatos desarrollaron hipoglucemia. Resultados: renatalmente, los factores con mayor influencia fueron la diabetes gestacional con mal control glucémico, gemelaridad y edad gestacional. La presencia de líquido amniótico meconial y el nacimiento por cesárea programada se asociaron a mayor probabilidad de hipoglucemia. Postnatalmente, el contacto precoz piel con piel, la succión al pecho, la iluminación tenue y la normotermia fueron factores protectores. El modelo predictivo que combinó tipo de iluminación, temperatura corporal y cifra de exceso de bases clasificó correctamente al 98% de los casos de hipoglucemia grave, con un R2 de Nagelkerke de 0,645 y especificidad del 99,5%. Conclusiones: Los factores postnatales ambientales parecen estar relacionados de forma directa en el desarrollo de la hipoglucemia precoz, por lo que el apoyo a la unión maternofilial y a la lactancia materna es fundamental. Nuestros resultados permiten una mejor identificación de los neonatos que no son subsidiarios de realizar controles de glucemia por tener poco riesgo de desarrollarla. (AU)

Introduction and objective: Neonatal hypoglycemia offers multiple controversies. The study aims to assess the main factors involved in the development of early hypoglycemia in term and late preterm infants, and the implication of different environmental circumstances. Methods: A prospective cohort study, in infants born between 34 0/7 weeks and 36 6/7 weeks of gestation. Three capillary blood glucose determinations were performed during the eight first hours after birth. Sample size: 207; 59 neonates developed hypoglycemia. Results: Prenatal risk factors include gestational diabetes with poor glycemic control, twin pregnancy and gestational age. The presence of meconium amniotic fluid and planned cesarean delivery are associated with a higher probability of hypoglycemia. After birth, skin to skin contact, breastfeeding, soft lightening, and normothermia are described as protective factors. The predictive model that combines the type of lightening, body temperature and the excess of bases level, correctly classifies 98% of the severe hypoglycemia cases, with a high Nagelkerke R2 value (0.645) and specificity of 99.5%. Conclusions: Postnatal environmental factors seem to be directly related to early hypoglycemia development, so it is essential to support the maternal–child union and breastfeeding. Our results allow better identification of neonates who are not subsidiary to performing blood glucose determinations because they have little risk of developing it.(AU)

[Prospective study on influence of perinatal factors on the development of early neonatal hypoglycemia in late-preterm and term infants]. / Estudio prospectivo de factores perinatales asociados a hipoglucemia precoz en el neonato prematuro tardío y a término.

INTRODUCTION AND OBJECTIVE: Neonatal hypoglycemia offers multiple controversies. The study aims to assess the main factors involved in the development of early hypoglycemia in term and late preterm infants, and the implication of different environmental circumstances. METHODS: A prospective cohort study, in infants born between 34 0/7 weeks and 36 6/7 weeks of gestation. Three capillary blood glucose determinations were performed during the eight first hours after birth. SAMPLE SIZE: 207; 59 neonates developed hypoglycemia. RESULTS: Prenatal risk factors include gestational diabetes with poor glycemic control, twin pregnancy and gestational age. The presence of meconium amniotic fluid and planned cesarean delivery are associated with a higher probability of hypoglycemia. After birth, skin to skin contact, breastfeeding, soft lightening, and normothermia are described as protective factors. The predictive model that combines the type of lightening, body temperature and the excess of bases level, correctly classifies 98% of the severe hypoglycemia cases, with a high Nagelkerke R2 value (0.645) and specificity of 99.5%. CONCLUSIONS: Postnatal environmental factors seem to be directly related to early hypoglycemia development, so it is essential to support the maternal-child union and breastfeeding. Our results allow better identification of neonates who are not subsidiary to performing blood glucose determinations because they have little risk of developing it.

Encuesta sobre detección de hipoglucemia y uso de glucómetros portátiles: ¿qué glucómetro es el más usado en las unidades neonatales españolas? / Survey on hypoglycaemia diagnosis and glucometer use - which is the most widely used glucometer in Spanish neonatology units?

INTRODUCCIÓN Y OBJETIVOS: la hipoglucemia neonatal sigue ofreciendo múltiples controversias. El objetivo del estudio es presentar la situación actual en torno a la forma de detección de la hipoglucemia neonatal y conocer el glucómetro portátil más utilizado en las unidades neonatales españolas en la actualidad. MÉTODOS: se elaboró un cuestionario "online" sobre el uso de glucómetros en neonatos y los dispositivos más utilizados, que fue enviado a los integrantes de la Sociedad Española de Neonatología. Participaron 75 centros. RESULTADOS: los glucómetros portátiles siguen teniendo un uso generalizado en la población neonatal. Más del 75 % de las unidades realizan un despistaje de la hipoglucemia neonatal en circunstancias clínicas concretas; el 13 % de los centros lo continúan realizando a todos los recién nacidos en las unidades neonatales. A mayor nivel asistencial, mayor es el porcentaje de detección de la hipoglucemia por otros sistemas de análisis (como gasometrías capilares): chi2, p = 0,019. Se usan múltiples modelos de glucómetro actualmente, encontrándose diferencias según el nivel asistencial (chi2, p = 0,01), siendo los modelos de la firma Nova Biomedical, Abbott y Roche Diagnostics los más usados. CONCLUSIONES: se observa que existen diferencias en la realización del despistaje de la hipoglucemia neonatal, por lo que es de gran importancia consensuar los procedimientos y acotar la población neonatal de mayor riesgo, para disminuir la variabilidad en la práctica clínica y mejorar la calidad de la asistencia neonatal

INTRODUCTION AND OBJECTIVE: neonatal hypoglycemia persistently offers multiple diagnostic controversies. This study aims to present the current situation regarding neonatal hypoglycaemia detection, and to gain insight into the most widely used portable glucometers in neonatal units today. METHODS: an online questionnaire was prepared and sent to the members of the Spanish Society of Neonatology; a total of 75 hospitals participated. RESULTS: portable glucometers continue to be widely used in the neonatal population. More than 75 % of units perform neonatal hypoglycemia screening in specific clinical circumstances, and 13 % of units continue to perform protocolized screening on all newborns at neonatal units. The higher the level of care, the higher the percentage of hypoglycaemia detection by other tests (such as blood gas analysis): chi2, p = 0.019. Multiple models of portable glucometers are currently used, with differences according to level of care (chi2, p = 0.01). Nova Biomedical, Abbott, and Roche Diagnostics models are most commonly used. CONCLUSIONS: differences in the performance of neonatal hypoglycaemia screening are observed, so standardised procedures and limiting the neonatal population at risk are important to reduce variability in clinical practice, and to improve the quality of neonatal care

[Survey on hypoglycaemia diagnosis and glucometer use-which is the most widely used glucometer in Spanish neonatology units?] / Encuesta sobre detección de hipoglucemia y uso de glucómetros portátiles: ¿qué glucómetro es el más usado en las unidades neonatales españolas?

INTRODUCTION: Introduction and objective: neonatal hypoglycemia persistently offers multiple diagnostic controversies. This study aims to present the current situation regarding neonatal hypoglycaemia detection, and to gain insiht into the most widely used portable glucometers in neonatal units today. Methods: an online questionnaire was prepared and sent to the members of the Spanish Society of Neonatology; a total of 75 hospitals participated. Results: portable glucometers continue to be widely used in the neonatal population. More than 75 % of units perform neonatal hypoglycemia screening in specific clinical circumstances, and 13 % of units continue to perform protocolized screening on all newborns at neonatal units. The higher the level of care, the higher the percentage of hypoglycaemia detection by other tests (such as blood gas analysis): chi2, p = 0.019. Multiple models of portable glucometers are currently used, with differences according to level of care (chi2, p = 0.01). Nova Biomedical, Abbott, and Roche Diagnostics models are most commonly used. Conclusions: differences in the performance of neonatal hypoglycaemia screening are observed, so standardised procedures and limiting the neonatal population at risk are important to reduce variability in clinical practice, and to improve the quality of neonatal care.

INTRODUCCIÓN: Introducción y objetivos: la hipoglucemia neonatal sigue ofreciendo múltiples controversias. El objetivo del estudio es presentar la situación actual en torno a la forma de detección de la hipoglucemia neonatal y conocer el glucómetro portátil más utilizado en las unidades neonatales españolas en la actualidad. Métodos: se elaboró un cuestionario "online" sobre el uso de glucómetros en neonatos y los dispositivos más utilizados, que fue enviado a los integrantes de la Sociedad Española de Neonatología. Participaron 75 centros. Resultados: los glucómetros portátiles siguen teniendo un uso generalizado en la población neonatal. Más del 75 % de las unidades realizan un despistaje de la hipoglucemia neonatal en circunstancias clínicas concretas; el 13 % de los centros lo continúan realizando a todos los recién nacidos en las unidades neonatales. A mayor nivel asistencial, mayor es el porcentaje de detección de la hipoglucemia por otros sistemas de análisis (como gasometrías capilares): chi2, p = 0,019. Se usan múltiples modelos de glucómetro actualmente, encontrándose diferencias según el nivel asistencial (chi2, p = 0,01), siendo los modelos de la firma Nova Biomedical, Abbott y Roche Diagnostics los más usados. Conclusiones: se observa que existen diferencias en la realización del despistaje de la hipoglucemia neonatal, por lo que es de gran importancia consensuar los procedimientos y acotar la población neonatal de mayor riesgo, para disminuir la variabilidad en la práctica clínica y mejorar la calidad de la asistencia neonatal.

Trombocitopenia inmune primaria: experiencia de una consulta especializada / Primary immune thrombocytopenia: Experience of a specialised clinic

INTRODUCCIÓN: La trombocitopenia inmune primaria (PTI) es poco frecuente en la infancia, pero es la causa más habitual de trombocitopenia. Se han intentado establecer factores de riesgo para predecir su evolución, con el objetivo de poder optimizar su manejo, que se ha modificado en los últimos años, debido, entre otros factores, a una atención más especializada. MATERIAL Y MÉTODOS: Estudio retrospectivo, observacional y analítico de los pacientes con PTI, en un periodo de 3 años, en una consulta especializada en Hematología Pediátrica. RESULTADOS: Desde el punto de vista epidemiológico, clínico y analítico, las características de esta serie son similares a las de otros grupos. La mayoría de los pacientes (23/31; 74,2%) presentaron una PTI de duración menor de 12 meses, sin complicaciones graves relacionadas con la enfermedad ni con el tratamiento. Se establecieron como factores de riesgo relacionados con una evolución tórpida (supervivencia libre de eventos [SLE] menor), sin alcanzar la significación estadística, el sexo femenino, la edad mayor de 10 años, la leucopenia, la ausencia de trombocitopenia grave inicial y la atención no especializada. La ausencia de antecedente de infección se relacionó significativamente con una SLE menor. CONCLUSIONES: Los factores de riesgo de evolución tórpida de PTI epidemiológicos y analíticos de este estudio coinciden con los descritos en la literatura. Presentaron una SLE menor los pacientes tratados antes del inicio de la atención especializada. Estos datos parecen apoyar la recomendación actual de que las enfermedades poco frecuentes, como esta, se controlen en unidades especializadas

INTRODUCTION: Although primary immune thrombocytopenia (ITP) is rare in childhood, it is the most frequent cause of thrombocytopenia. There have been attempts to establish risk factors to predict the progression of the disease in order to optimise its management, which has changed in recent years due to, among other reasons, specialised care. MATERIAL AND METHODS: A retrospective, observational and analytical study was conducted on patients diagnosed with ITP over a 3-year period in a Paediatric Haematology specialist clinic. RESULTS: From the epidemiological, clinical and analytical point of view, the characteristics of this group are similar to others. Most of the patients (23/31, 74.2%) had ITP for less than 12 months, with there being no serious complications related to the disease or the treatment received. It was established that risk factors were related to being slowly evolving (lower event-free survival (EFS)) with no statistical significance, female gender, age over 10 years, leukopenia absence of initial severe thrombocytopenia, and non-specialised care. The absence of a history of infection was significantly related to a lower EFS. CONCLUSIONS: The epidemiological and analytical risk factors for a slowly evolving ITP are the same that described in the literature. Patients treated before the beginning of specialised care also had a lower EFS. These data seem to support the current recommendation that rare diseases should be managed in specialised units

[Primary immune thrombocytopenia: Experience of a specialised clinic]. / Trombocitopenia inmune primaria: experiencia de una consulta especializada.

INTRODUCTION: Although primary immune thrombocytopenia (ITP) is rare in childhood, it is the most frequent cause of thrombocytopenia. There have been attempts to establish risk factors to predict the progression of the disease in order to optimise its management, which has changed in recent years due to, among other reasons, specialised care. MATERIAL AND METHODS: A retrospective, observational and analytical study was conducted on patients diagnosed with ITP over a 3-year period in a Paediatric Haematology specialist clinic. RESULTS: From the epidemiological, clinical and analytical point of view, the characteristics of this group are similar to others. Most of the patients (23/31, 74.2%) had ITP for less than 12 months, with there being no serious complications related to the disease or the treatment received. It was established that risk factors were related to being slowly evolving (lower event-free survival (EFS)) with no statistical significance, female gender, age over 10 years, leukopenia absence of initial severe thrombocytopenia, and non-specialised care. The absence of a history of infection was significantly related to a lower EFS. CONCLUSIONS: The epidemiological and analytical risk factors for a slowly evolving ITP are the same that described in the literature. Patients treated before the beginning of specialised care also had a lower EFS. These data seem to support the current recommendation that rare diseases should be managed in specialised units.

Propéptido natriurético cerebral como marcador de evolución digestiva en el recién nacido prematuro / Brain natriuretic peptide as a marker of digestive evolution in the premature newborn

Antecedentes y objetivo: el ductus arterioso persistente hemodinámicamente significativo (DAP-HS) se asocia a mayor riesgo de enterocolitis necrotizante (ECN) y peor tolerancia enteral en los recién nacidos prematuros (RNPT). Se ha demostrado asociación entre el propéptido natriurético cerebral (proBNP) y el DAP-HS. Nuestro objetivo fue analizar la relación entre los niveles de proBNP y la tolerancia enteral, el riesgo de ECN y la ganancia ponderal en el RNPT. Material y métodos: estudio retrospectivo observacional, que incluyó a RNPT menores de 32 semanas de gestación y/o 1.500 g, con estudio ecocardiográfico y determinación de niveles de proBNP a las 48-72 horas de vida. Resultados: de 117 pacientes incluidos, el 65,8% tuvo un DAPHS y el 9,4% presentó ECN confirmada. El DAP-HS se asoció a mayor duración de la nutrición parenteral (p < 0,001), a ECN confirmada (p = 0,006) y a peor ganancia ponderal durante el ingreso (p < 0,001). Los valores de proBNP se relacionaron con la ECN (no ECN 12.189,5 pg/ml, rango 654-247.986; ECN 41.445 pg/ml, rango 15.275-166.172; p < 0,001), sin encontrar asociación con el resto de variables de evolución digestiva. En el análisis multivariante de regresión logística, las variables relacionadas de forma independiente con el desarrollo de ECN fueron la edad gestacional y el proBNP superior a 22.400 pg/ml (OR 13,386; IC 95% 1,541-116,262; p = 0,019). Conclusiones: el proBNP podría ser un marcador precoz de patología digestiva grave en el RNPT. Los niveles elevados podrían relacionarse con mayor riesgo de ECN en los neonatos más inmaduros

Background and objective: hemodynamically significant patent ductus arteriosus (HS-PDA) is associated with an increased risk of necrotizing enterocolitis (NEC) and worse enteral tolerance in preterm newborns (PN). An association has been demonstrated between brain natriuretic propeptide (proBNP) and HS-PDA. Our objective was to analyze the relationship between proBNP levels and enteral tolerance, NEC risk and weight gain in PN. Material and methods: a retrospective study was performed in neonates born before 32 weeks' gestation or with birth weight below 1500 grams, in whom proBNP determination and echocardiography were performed at 48 to 72 h of life. Results: 117 patients were included. 65.8% had a HS-PDA and 9.4% had an outcome of NEC. HS-PDA was associated with longer duration of parenteral nutrition (p < 0.001), a confirmed NEC (p = 0.006) and worse weight gain during admission (p < 0.001). ProBNP levels were associated to NEC (no NEC 12189.5 pg / mL, range 654-247986; NEC 41445 pg/mL, range 15275-166172, p < 0.001). No association was found with the rest of gastrointestinal outcomes. Multivariate logistic regression analysis showed a significant association of NEC with gestational age and proBNP above 22,400 pg/mL (OR 13,386, 95% CI 1,541-116,262, p = 0.019). Conclusions: proBNP could be an early marker of severe digestive pathology in PN. Increased proBNP levels could be associated with a significant increased risk of NEC in very immature newborns

[Brain natriuretic peptide as a marker of digestive evolution in the premature newborn]. / Propéptido natriurético cerebral como marcador de evolución digestiva en el recién nacido prematuro.

INTRODUCTION: Background and objective: hemodynamically significant patent ductus arteriosus (HS-PDA) is associated with an increased risk of necrotizing enterocolitis (NEC) and worse enteral tolerance in preterm newborns (PN). An association has been demonstrated between brain natriuretic propeptide (proBNP) and HS-PDA. Our objective was to analyze the relationship between proBNP levels and enteral tolerance, NEC risk and weight gain in PN. Material and methods: a retrospective study was performed in neonates born before 32 weeks' gestation or with birth weight below 1500 grams, in whom proBNP determination and echocardiography were performed at 48 to 72 h of life. Results: 117 patients were included. 65.8% had a HS-PDA and 9.4% had an outcome of NEC. HS-PDA was associated with longer duration of parenteral nutrition (p < 0.001), a confirmed NEC (p = 0.006) and worse weight gain during admission (p < 0.001). ProBNP levels were associated to NEC (no NEC 12189.5 pg / mL, range 654-247986; NEC 41445 pg/mL, range 15275-166172, p < 0.001). No association was found with the rest of gastrointestinal outcomes. Multivariate logistic regression analysis showed a significant association of NEC with gestational age and proBNP above 22,400 pg/mL (OR 13,386, 95% CI 1,541-116,262, p = 0.019). Conclusions: proBNP could be an early marker of severe digestive pathology in PN. Increased proBNP levels could be associated with a significant increased risk of NEC in very immature newborns.

INTRODUCCIÓN: Antecedentes y objetivo: el ductus arterioso persistente hemodinámicamente significativo (DAP-HS) se asocia a mayor riesgo de enterocolitis necrotizante (ECN) y peor tolerancia enteral en los recién nacidos prematuros (RNPT). Se ha demostrado asociación entre el propéptido natriurético cerebral (proBNP) y el DAP-HS. Nuestro objetivo fue analizar la relación entre los niveles de proBNP y la tolerancia enteral, el riesgo de ECN y la ganancia ponderal en el RNPT. Material y métodos: estudio retrospectivo observacional, que incluyó a RNPT menores de 32 semanas de gestación y/o 1.500 g, con estudio ecocardiográfico y determinación de niveles de proBNP a las 48-72 horas de vida. Resultados: de 117 pacientes incluidos, el 65,8% tuvo un DAPHS y el 9,4% presentó ECN confirmada. El DAP-HS se asoció a mayor duración de la nutrición parenteral (p < 0,001), a ECN confirmada (p = 0,006) y a peor ganancia ponderal durante el ingreso (p < 0,001). Los valores de proBNP se relacionaron con la ECN (no ECN 12.189,5 pg/ml, rango 654-247.986; ECN 41.445 pg/ml, rango 15.275-166.172; p < 0,001), sin encontrar asociación con el resto de variables de evolución digestiva. En el análisis multivariante de regresión logística, las variables relacionadas de forma independiente con el desarrollo de ECN fueron la edad gestacional y el proBNP superior a 22.400 pg/ml (OR 13,386; IC 95% 1,541-116,262; p = 0,019). Conclusiones: el proBNP podría ser un marcador precoz de patología digestiva grave en el RNPT. Los niveles elevados podrían relacionarse con mayor riesgo de ECN en los neonatos más inmaduros.

Utilidad del propéptido natriurético cerebral en el diagnóstico y manejo del ductus arterioso permeable / Usefulness of brain natriuretic propeptide in the diagnosis and management of patent ductus arteriosus

Introducción: El ductus arterioso persistente (DAP) es una patología muy prevalente en el recién nacido pretérmino (RNPT), que puede relacionarse con mayor morbimortalidad en los prematuros más inmaduros. Estudios recientes han valorado la utilidad del propéptido natriurético cerebral (proBNP) en su diagnóstico. El objetivo fue evaluar la eficacia diagnóstica del proBNP como marcador de sobrecarga hemodinámica en el DAP y su capacidad para identificar la necesidad de tratamiento. Pacientes y métodos: Estudio retrospectivo observacional, que incluyó a RNPT menores de 32 semanas de gestación y/o 1.500 g, con estudio ecocardiográfico y determinación de niveles de proBNP. Se comparó por subgrupos en función de la presencia de DAP y sus características hemodinámicas. Resultados: De los 60 pacientes incluidos, el 71,7% presentó DAP, el 86% de los cuales fue hemodinámicamente significativo (DAP-HS). Todos, salvo uno, recibieron tratamiento médico con ibuprofeno o paracetamol. El 29,7% de los DAP-HS precisó cierre quirúrgico. Se encontraron valores superiores de proBNP en los pacientes con DAP-HS (33.338±34.494,47pg/mL; p=0,000), respecto a los pacientes con ductus cerrado o no hemodinámicamente significativo. Los pacientes que precisaron cirugía también presentaron valores más elevados (30.596,8±14.910,9pg/mL; p=0,004). El grupo en el que se constató cierre ductal tras tratamiento farmacológico presentó mayor descenso de los niveles de proBNP (68±24,69% vs. -12,22±99,4%; p=0,030). Mediante curva ROC se calculó valor de corte de proBNP para el diagnóstico de DAP-HS que fue de 9.321,5pg/mL (E 100%, S 94,6%). Conclusiones: Los niveles de proBNP se relacionan con la presencia o ausencia de ductus persistente hemodinámicamente significativo y sus variaciones con la respuesta al tratamiento. Valores elevados también se relacionan con la necesidad de cirugía (AU)

Introduction: Patent ductus arteriosus (PDA) is a prevalent condition in preterm infants, and may be related to increased morbidity and mortality in the most immature newborns. Recent studies have examined the usefulness of brain natriuretic propeptide (proBNP) in the diagnosis of this pathology. The aim of the study was to evaluate the diagnostic efficacy of proBNP as a marker of hemodynamic overload in PDA. Patients and methods: A retrospective study was conducted on preterm infants less than 32 weeks of gestation and/or weight less than 1500 grams. Echocardiogram and determination of proBNP levels were performed on all patients. Comparison was made by subgroups according to the presence of PDA and their haemodynamic characteristics. Results: Of the 60 patients enrolled, 71.7% had PDA, of which 86% had haemodynamically significant patent ductus arteriosus (HS-PDA). All of them, but one, received medical treatment with ibuprofen or acetaminophen. Surgical closure was required in 29.7% of HS-PDA. Higher values of proBNP were found in patients with HS-PDA (33338±34494.47pg/mL; p=.000) compared with patients with closed or non-haemodynamically significant ductus arteriosus. Higher values were also found in patients who required surgical closure of PDA (30596.8±14910.9; p=.004). A greater decrease inproBNP levels was found in the group of patients which duct closure after pharmacological treatment (68±24.69% vs -12.22±99.4%; p=.030). ProBNP cutoff-level for HS-PDA was calculated by ROC curve and it was 9321.5pg/mL (Specificity: 100%, Sensitivity: 94.6%). Conclusions: ProBNP levels are related to the presence or absence of haemodynamically significant patent ductus arteriosus; and its variations with treatment response. High values are also related to the need for surgical closure of PDA (AU)

[Usefulness of brain natriuretic propeptide in the diagnosis and management of patent ductus arteriosus]. / Utilidad del propéptido natriurético cerebral en el diagnóstico y manejo del ductus arterioso permeable.

INTRODUCTION: Patent ductus arteriosus (PDA) is a prevalent condition in preterm infants, and may be related to increased morbidity and mortality in the most immature newborns. Recent studies have examined the usefulness of brain natriuretic propeptide (proBNP) in the diagnosis of this pathology. The aim of the study was to evaluate the diagnostic efficacy of proBNP as a marker of hemodynamic overload in PDA. PAIENTS AND METHODS: A retrospective study was conducted on preterm infants less than 32 weeks of gestation and/or weight less than 1500 grams. Echocardiogram and determination of proBNP levels were performed on all patients. Comparison was made by subgroups according to the presence of PDA and their haemodynamic characteristics. RESULTS: Of the 60 patients enrolled, 71.7% had PDA, of which 86% had haemodynamically significant patent ductus arteriosus (HS-PDA). All of them, but one, received medical treatment with ibuprofen or acetaminophen. Surgical closure was required in 29.7% of HS-PDA. Higher values of proBNP were found in patients with HS-PDA (33338±34494.47pg/mL; p=.000) compared with patients with closed or non-haemodynamically significant ductus arteriosus. Higher values were also found in patients who required surgical closure of PDA (30596.8±14910.9; p=.004). A greater decrease inproBNP levels was found in the group of patients which duct closure after pharmacological treatment (68±24.69% vs -12.22±99.4%; p=.030). ProBNP cutoff-level for HS-PDA was calculated by ROC curve and it was 9321.5pg/mL (Specificity: 100%, Sensitivity: 94.6%). CONCLUSIONS: ProBNP levels are related to the presence or absence of haemodynamically significant patent ductus arteriosus; and its variations with treatment response. High values are also related to the need for surgical closure of PDA.

Estudio de los efectos de la implantación de un banco de leche donada en los recién nacidos pretérmino en Aragón / Study of the effects of the implementation of a human milk donor bank in preterm newborns in Aragon

INTRODUCCIÓN: Numerosos obstáculos pueden impedir que un prematuro o un neonato enfermo reciba leche de su madre. En estos casos las sociedades científicas pediátricas recomiendan la alimentación con leche materna donada. Explicamos qué es un banco de leche, cómo funciona, el método de selección de donantes y sus beneficios. Finalmente, describimos la situación actual en Aragón. MATERIAL Y MÉTODOS: Estudio retrospectivo de tipo descriptivo de las características perinatales de la muestra y analítico observacional, comparando 2 grupos de la muestra: prebanco y posbanco de leche. Finalmente se buscan diferencias dentro de la etapa posbanco entre los alimentados con leche materna propia y donada. RESULTADOS: Un total de 234 pacientes (104 hombres y 130 mujeres). Dos grupos: prebanco (152 pacientes) y posbanco (82 pacientes), comparables al nacimiento; longitud y perímetro cefálico significativamente mayor en grupo posbanco y menor tasa de enterocolitis necrosante. Sin diferencias estadísticamente significativas en el resto de variables, y tampoco entre los subgrupos de leche materna propia y donada. Discusión La implantación del banco supone un efecto beneficioso, con reducción de la morbilidad neonatal en el caso de la enterocolitis necrosante, y la alimentación con leche materna podría ser un factor protector frente a sepsis neonatal tardía al mejorar la inmunidad. CONCLUSIONES: La incidencia de enterocolitis necrosante es menor tras la implantación del banco de leche. Estudios con mayor número de pacientes quizás demostrasen diferencias en otras variables

INTRODUCTION: Numerous obstacles may prevent a premature or sick neonate receiving their mother's milk. In these cases, pediatric scientific societies recommend feeding with donor human milk. In this article, it is explained what a milk bank is, how it works, the donors' selection method, and the benefits. We also describe the current situation in Aragon (Spain) is also described. MATERIAL AND METHODS: A retrospective and descriptive study was conducted on the perinatal sample characteristics, as well as an analytical observational study, comparing two sample groups: pre- and post-human milk bank. Finally, differences in the post-bank stage between those patients fed with own-mother's or donor human milk were determined. RESULTS: The study included a total of 234 PATIENTS: 104 females and 130 males. Two groups: pre and post-bank, with 152 and 82 patients, respectively, which had similar characteristics at birth; length and head circumference were significantly higher in the post-bank group and a lower rate of necrotizing enterocolitis was also found. No statistically significant differences were found in other variables between subgroups fed with own-mother's milk and donor human milk. Discussion The establishment of the human milk donor bank has a beneficial effect, as it reduces neonatal morbidity in cases of necrotizing enterocolitis. Human milk feeding could be a protective factor against neonatal sepsis due to improve immunity. CONCLUSIONS: The incidence of necrotizing enterocolitis is lower after the establishment of the milk bank. Studies with more patients may demonstrate differences in other variables

[Study of the effects of the implementation of a human milk donor bank in preterm newborns in Aragon]. / Estudio de los efectos de la implantación de un banco de leche donada en los recién nacidos pretérmino en Aragón.

INTRODUCTION: Numerous obstacles may prevent a premature or sick neonate receiving their mother's milk. In these cases, pediatric scientific societies recommend feeding with donor human milk. In this article, it is explained what a milk bank is, how it works, the donors' selection method, and the benefits. We also describe the current situation in Aragon (Spain) is also described. MATERIAL AND METHODS: A retrospective and descriptive study was conducted on the perinatal sample characteristics, as well as an analytical observational study, comparing two sample groups: pre- and post-human milk bank. Finally, differences in the post-bank stage between those patients fed with own-mother's or donor human milk were determined. RESULTS: The study included a total of 234 patients: 104 females and 130 males. Two groups: pre and post-bank, with 152 and 82 patients, respectively, which had similar characteristics at birth; length and head circumference were significantly higher in the post-bank group and a lower rate of necrotizing enterocolitis was also found. No statistically significant differences were found in other variables between subgroups fed with own-mother's milk and donor human milk. DISCUSSION: The establishment of the human milk donor bank has a beneficial effect, as it reduces neonatal morbidity in cases of necrotizing enterocolitis. Human milk feeding could be a protective factor against neonatal sepsis due to improve immunity. CONCLUSIONS: The incidence of necrotizing enterocolitis is lower after the establishment of the milk bank. Studies with more patients may demonstrate differences in other variables.