Análisis de causas atribuidas a "BRUE" entre los años 2017 a 2020 / Analysis of etiologies attributed to "BRUE" between the years 2017 to 2020

El término BRUE describe un evento en un lactante menor, repentino, breve, ya resuelto y sólo aplica cuando no existe una explicación para este episodio. Es escasa la literatura nacional e internacional sobre el estudio etiológico en BRUE. Objetivos: Caracterizar lactantes con episodio de BRUE y hacer un análisis etiológico. Métodos: Estudio retrospectivo, descriptivo lactantes hospitalizados por BRUE. Resultados: Se encontraron 50 lactantes con BRUE, la mayoría de ellos presentó un solo evento y ninguno requirió reanimación cardiopulmonar. Las características principales de los eventos fueron apnea, cianosis y tono disminuido. Las etiologías encontradas, más habituales, fueron reflujo gastro-esofágico, infección respiratoria, mala técnica alimentaria y crisis epilépticas. La evaluación clínica fue el principal elemento diagnóstico. Discusión: Nuestro análisis etiológico concuerda con la literatura nacional e internacional. La anamnesis y examen físico son la principal herramienta diagnóstica. Es fundamental contar con guías, adaptadas a la realidad nacional y local, que dirijan el estudio de lactantes con BRUE.

BRUE is an event occurring in an infant when the observer reports a sudden, brief, and now-resolved episode. BRUE is a diagnosis of exclusion and is used only when there is no explanation for the event after conducting an appropriate history and physical examination. There is little literature on the etiological study in BRUE. Objectives: To characterize infants with a BRUE episode and to carry out an etiological analysis. Methods: A retrospective study including infants who have experienced a BRUE between the years 2017 to 2020. Results: 50 infants with BRUE, most of them presented a single event and none required cardiopulmonary resuscitation. The main characteristics of the events were apnea, cyanosis and decreased tone. The most common etiologies found were gastroesophageal reflux, respiratory infection, poor feeding technique, and seizures. History and physical examination are the fundamental diagnostic tools. Discussion: Our etiological analysis agrees with the national and international literature. The clinical evaluation was the main diagnostic tool. It is essential to create local guidelines for the evaluation investigation and management of infants with BRUE.

Pacientes con diagnóstico de "BRUE" atendidos en hospital pediátrico chileno. Aplicando nueva terminología / Patients with diagnosis of "Sids" treated in chilean pediatric hospital. Applying new terminology

La posible relación entre apneas durante la infancia temprana y Síndrome de Muerte Súbita del Lactante (SMSL) nunca ha sido demostrada, existiendo evidencias de que ambas condiciones podrían no estar relacionadas. La Academia Americana de Pediatría (AAP) define ALTE (Acute Life Threatening Event), como un evento brusco e inesperado que incluye manifestaciones de apnea junto con cambios de coloración cutánea y de tono muscular, donde el observador cree que el niño ha muerto. La AAP ha propuesto recientemente la sustitución del término ALTE por Brief Resolved Unexplained Events (BRUE). El nuevo concepto permite categorizar eventos breves, resueltos e inexplicados, para optimizar mejor el recurso en salud, a través de objetivar el evento y entregando estrategias de manejo categorizando el riesgo. Objetivo: Describir las características clínicas y letalidad de los pacientes menores de 12 meses que consultan por BRUE en un hospital de referencia. Materiales y métodos: Estudio transversal descriptivo con revisión de ficha de 46 pacientes de la Unidad de Lactantes y Nutrición del Hospital Dr. Luis Calvo Mackenna, con diagnóstico de BRUE, entre enero a diciembre de 2017. Resultados: Del total de pacientes con BRUE, 45% fueron hombres y 55% mujeres. La edad promedio fue de 1,37 + 0,51 meses. En 70% se demostró una etiología, de estas 31% con enfermedad por reflujo gastroesofágico (ERGE), siendo ésta la causa más frecuente seguida de un 19% con infecciones respiratorias agudas (IRA) y 9% causas neurológicas. En el 30% fueron causas idiopáticas. Conclusión: En nuestro estudio las causas más frecuentes de BRUE fueron ERGE e infecciones respiratorias. Durante el período de estudio ningún paciente estudiado falleció, por lo que no encontramos relación entre apneas del lactante y síndrome de muerte súbita.

The possible relationship between apneas during early childhood and Sudden Infant Death Syndrome (SIDS) has never been demonstrated, and there is evidence that the two conditions may not be related. The American Academy of Pediatrics (AAP) defines ALTE (Acute Life Threatening Event), as an abrupt and unexpected event that includes manifestations of apnea along with changes in skin color and muscle tone, where the observer believes that the child has died. The AAP has recently proposed replacing the term ALTE with Brief Resolved Unexplained Events (BRUE). The new concept makes it possible to categorize brief, resolved and unexplained events, to better optimize the health resource, through objectifying the event and delivering management strategies by categorizing the risk. Objective: To describe the clinical characteristics and lethality of patients younger than 12 months who consult for BRUE in a referral hospital. Materials and methods: Descriptive cross-sectional study with revision of the file of 46 patients from the Infant and Nutrition Unit of the Dr. Luis Calvo Mackenna Hospital, with a diagnosis of BRUE, between January and December 2017. Results: Of the total number of patients with BRUE, 45% were men and 55% women. The average age was 1.37 + 0.51 months. An etiology was demonstrated in 70%, of these 31% with gastroesophageal reflux disease (GERD), this being the most frequent cause, followed by 19% with acute respiratory infections (ARI) and 9% with neurological causes. In 30% they were idiopathic causes. Conclusion: In our study, the most frequent causes of BRUE were GERD and respiratory infections. During the study period, no patient studied died, so we found no relationship between apnea in the infant and sudden death syndrome.

Consenso sobre el manejo de eventos de aparente amenaza a la vida del lactante (ALTE): comisión de sueño, sociedad chilena de neumología pediátrica 2013 / Consensus on evaluation and management of apparent life-threatening events in infancy (ALTE)

Un Evento de Aparente Amenaza de la Vida o ALTE (del inglés: Apparent Life Threatening Event) corresponde a un episodio agudo que ante los ojos del observador pone en riesgo la vida de un lactante menor de 1 año. Debe presentar la combinación de 2 o más de los criterios siguientes: apnea / cambio de color / alteración del tono / atoro e implicar la necesidad de algún tipo de maniobras para reanimar. En el presente consenso sobre el manejo de un ALTE se revisaron la evidencia internacional y nacional respecto al enfoque diagnóstico, estudio etiológico, criterios y duración de hospitalización y las indicaciones de monitorización domiciliaria.

Apparent life threatening events are defined as an acute episode in which the observer fears an infant < 1 year may die. ALTE is characterized by some combination of apnea, color or muscle tone change, chocking and has to be followed by cardiorespiratory reanimation. The present consensus paper reviews international and national evidence concerning diagnosis, etiologies, hospitalization criteria and indications for home monitoring.

Aparente amenaza para la vida por el síndrome de QT prolongado / An apparent life threatening secondary to long Qt syndrome

Se presenta el caso de un lactante con un episodio de pérdida de conocimiento, en quien se diagnosticó fibrilación ventricular. Se realizó desfibrilación externa con éxito, permitiendo luego arribar al diagnóstico etiológico de síndrome de QT prolongado, constituyendo un ejemplo documentado de esta entidad como causa del síndrome de muerte súbita del lactante.

We report the case of an infant with an episode of loss of consciousness, in whom ventricular fibrillation was diagnosed. He was successfully defibrillated and long QT syndrome was diagnosed as his baseline disease. This case constitutes a documented example of this entity as a cause of the sudden infant death syndrome.

Evento com aparente risco de morte recorrente como manifestação inicial de síndrome miastênica congênita / Recurrent apparent life-threatening event as the first manifestation of congenital myasthenia / Evento con aparente riesgo de muerte recurrente como manifestación inicial de síndrome miasténico congénito

OBJETIVO: Alertar os pediatras sobre a necessidade de investigar criteriosamente a etiologia de eventos com aparente risco de morte recorrente. Não foram encontrados relatos associando tais eventos à miastenia congênita. DESCRIÇÃO DO CASO: Lactente de sete meses apresentando história de eventos com aparente risco de morte recorrente foi internado para investigação. Durante a internação, apresentou cianose e dispneia progressiva, com necessidade de ventilação mecânica por três dias. Após a melhora clínica, e tendo sido descartadas as hipóteses de doença do refluxo gastroesofágico e aspiração pulmonar como desencadeantes, notou-se ptose palpebral bilateral, hipotonia apendicular e choro fraco, que conduziram à suspeita clínica de miastenia congênita. Após confirmação do diagnóstico, foi mantido tratamento ambulatorial com piridostigmina, com recuperação nutricional e neurológica, sem novos eventos com aparente risco de morte nos três anos seguintes. COMENTÁRIOS: A investigação minuciosa das causas de eventos com aparente risco de morte pode levar a diagnósticos menos frequentes que exigem tratamento específico, como a miastenia congênita.

OBJECTIVE: To alert pediatricians about the importance of a careful investigation on recurrent apparent life-threatening events. Reports of the association of these events with congenital myasthenic syndromes were not found. CASE DESCRIPTION: A seven-month-old infant with recurrent apparent life-threatening events was admitted for investigation. During hospital stay, she presented cyanosis and respiratory failure, requiring mechanical ventilation for three days. After clinical improvement, hypotheses of gastroesophageal reflux and pulmonary aspiration were ruled out. The presence of eyelid ptosis, general hypotonia and weak crying led to the suspicion of congenital myasthenia, which was confirmed. Treatment with oral piridostigmine led to neurological and nutritional normalization, without any other apparent life-threatening event during the next three years. COMMENTS: The careful etiological investigation of apparent life-threatening events may lead to rare diagnosis that requires specific treatments, such as congenital myasthenia.

OBJETIVO: Alertar a los pediatras sobre la necesidad de investigar criteriosamente la etiología de eventos con aparente riesgo de muerte recurrente. No se encontraron relatos asociando tales eventos a la miastenia congénita. DESCRIPCIÓN DEL CASO: Lactante de siete meses presentando historia de eventos con aparente riesgo de muerte recurrente fue internado para investigación. Durante la internación, presentó cianosis y disnea progresiva, con necesidad de ventilación mecánica por tres días. Después de la mejora clínica, y habiendo sido rechazadas las hipótesis de enfermedad del reflujo gastroesofágico y aspiración pulmonar como desencadenantes, se notó ptosis palpebral bilateral, hipotonía apendicular y lloro débil, que condujeron a la sospecha clínica de miastenia congénita. Después de la confirmación del diagnóstico, se mantuvo el tratamiento ambulatorial con piridostigmina, con recuperación nutricional y neurológica, sin nuevos eventos con aparente riesgo de muerte en los tres años siguientes. COMENTARIOS: La investigación minuciosa de las causas de eventos con aparente riesgo de muerte puede llevar a diagnósticos menos frecuentes que exigen tratamiento específico, como la miastenia congénita.

Apparent life-threatening events in neonatal period: clinical manifestations and diagnostic challenges in a pediatric referral center

Apparent Life-Threatening Events [ALTEs] is an episode that is frightening to the observer and is characterized by some combination of apnea, color change, altered muscle tone, choking, and gagging. This study was designed to evaluate and follow up neonates who presented with clinical manifestation of an ALTE in a year. In this prospective observational study, all of the neonates with episode of ALTE who were admitted to the Children's Medical Center [CMC] in Tehran, from June 15[th] 2010 to May 14[th] 2011 were enrolled in the study. Data from patients consisting of history, physical examinations, and paraclinical findings were recorded in a checklist and all followed up 3 to 6 months after discharge. During the study period 18 neonates were admitted due to ALTE episode[s] with mean age of 15 +/- 13 days. Nine [50%] neonates had previous attacks of ALTE. The most frequent complaint was cyanosis in 12 [67%] and apnea in 8 [44%] patients. In 10 [56%] the event lasted less than one minute, 13 [72%] were awake, 17 [95%] in supine position and 13 [72%] on their parent's lap. Primary antagonistic impression on admission was sepsis in 11 [61%] and concomitant seizure in 5 [28%]. The most common final diagnosis according to repeated physical examinations, result of paraclinical investigations and follow up was sepsis 4 [22%] and aspiration 9 [50%]. ALTE recurred in none of the neonates during follow up. The rate of ALTE seems to be higher than in this study owing to high incidence of recurrent ALTE. Although most of these attacks regress spontaneously, more attention should be paid for the underlying diseases

Apneas e infecciones en lactantes / Apnea and infections in infants

Infections are a frequent cause of apnea in infants, involving both respiratory and extrarrespiratory systems. In the first group we find upper respiratory infections and lower respiratory infections caused by virus or bacteria such as Respiratory Syncytial Virus, Parainfluenza and Bordetella pertussis; in the second group urinary tract infections and severe infections such as meningitis and sepsis are of importance. In this article we analyze different causes of infections attributed to apnea, taking into account existing literature at the time.

Las infecciones son una frecuente causa de apneas en lactantes, pudiendo involucrar tanto el sistema respiratorio como extrarrespiratorio. En el primero encontramos las infecciones respiratorias altas y/o bajas producidas tanto por virus como bacterias, donde destacan Virus Respiratorio Sincicial, Parainfluenza y Bordetella Pertussis; en el segundo grupo son de importancia la infección urinaria e infecciones graves como meningitis y sepsis. En este artículo se analizan estas distintas causas infecciosas atribuidas a eventos de apneas en lactantes, en consideración a la literatura actualmente existente.