Atropine does not prevent hypoxemia and bradycardia in tracheal intubation in the pediatric emergency department: observational study / O uso da atropina não previne hipoxemia e bradicardia na intubação traqueal no departamento de emergência pediátrica: estudo observacional

ABSTRACT Objective: The benefit of atropine in pediatric tracheal intubation is not well established. The objective of this study was to evaluate the effect of atropine on the incidence of hypoxemia and bradycardia during tracheal intubations in the pediatric emergency department. Methods: This is a single-center observational study in a tertiary pediatric emergency department. Data were collected on all tracheal intubations in patients from 31 days to incomplete 20 years old, performed between January 2016 and September 2020. Procedures were divided into two groups according to the use or not of atropine as a premedication during intubation. Records with missing data, patients with cardiorespiratory arrest, cyanotic congenital heart diseases, and those with chronic lung diseases with baseline hypoxemia were excluded. The primary outcome was hypoxemia (peripheral oxygen saturation ≤88%), while the secondary outcomes were bradycardia (decrease in heart rate >20% between the maximum and minimum values) and critical bradycardia (heart rate <60 bpm) during intubation procedure. Results: A total of 151 tracheal intubations were identified during the study period, of which 126 were eligible. Of those, 77% had complex, chronic underlying diseases. Atropine was administered to 43 (34.1%) patients and was associated with greater odds of hypoxemia in univariable analysis (OR: 2.62; 95%CI 1.15-6.16; p=0.027) but not in multivariable analysis (OR: 2.07; 95%CI 0.42-10.32; p=0.37). Critical bradycardia occurred in only three patients, being two in the atropine group (p=0.26). Bradycardia was analyzed in only 42 procedures. Atropine use was associated with higher odds of bradycardia in multivariable analysis (OR: 11.00; 95%CI 1.3-92.8; p=0.028). Conclusions: Atropine as a premedication in tracheal intubation did not prevent the occurrence of hypoxemia or bradycardia during intubation procedures in pediatric emergency.

RESUMO Objetivo: Avaliar o efeito da atropina na incidência de hipoxemia e bradicardia durante a intubação orotraqueal no departamento de emergência pediátrica. Métodos: Estudo observacional, realizado em departamento de emergência pediátrica terciário em que foram analisados os registros de intubações orotraqueais de pacientes com 31 dias a 20 anos incompletos, entre janeiro de 2016 e setembro de 2020. Os procedimentos foram divididos em dois grupos de acordo com o uso ou não da atropina como pré-medicação durante a intubação. Foram excluídos os procedimentos com falhas no preenchimento dos dados, pacientes com parada cardiorrespiratória, cardiopatias congênitas cianóticas, e aqueles com pneumopatias crônicas com hipoxemia basal. O desfecho primário foi hipoxemia (saturação periférica de oxigênio ≤88%), enquanto os desfechos secundários foram bradicardia (queda >20% entre a frequência cardíaca máxima e mínima) e bradicardia crítica (frequência cardíaca <60 bpm) durante o procedimento de intubação Resultados: Foram identificados 151 procedimentos de intubação orotraqueal, sendo 126 elegíveis para o estudo. Desses, 77% tinham doenças subjacentes complexas e crônicas. A atropina foi administrada em 43 (34,1%) pacientes e foi associada a maiores chances de hipoxemia na análise univariada (OR: 2,62; IC95% 1,15-6,16; p=0,027), porém, não na análise multivariada (OR: 2,073; IC95% 0,416-10,32; p=0,373). A bradicardia crítica ocorreu em apenas três pacientes, sendo dois no grupo atropina (p=0,268). A bradicardia foi analisada em apenas 42 procedimentos. O uso de atropina foi associado a maior probabilidade de bradicardia (OR: 11,00; IC95% 1,3-92,8; p=0,028) na análise multivariável. Conclusões: Atropina como pré-medicação na intubação orotraqueal não evitou a ocorrência de hipoxemia ou bradicardia durante os procedimentos de intubação na emergência pediátrica.

Síndrome HELLP y rotura hepática en un embarazo gemelar: presentación de un caso / HeLLP Syndrome and Hepatic Rupture in a Twin Pregnancy: A Case Report / Síndrome HeLLP e ruptura hepática em gestação gemelar: relato de caso

Introducción: el síndrome HELLP y rotura hepática es una complicación poco frecuente, especialmente en casos de embarazo gemelar. Se presenta el caso de un hematoma subcapsular hepático roto por síndrome HELLP que complicó un embarazo gemelar que requirió una cesárea de emergencia y para el manejo de la hipovolemia, el empaquetamiento hepático. Presentación del caso: mujer de 41 años, con gestación gemelar de 35 semanas, quien acudió al servicio de emergencia, por contracciones uterinas y ausencia de movimientos fetales. Ante una bradicardia severa de ambos fetos, se optó por una cesárea de urgencia. Al abrir la cavidad abdominal, se encontró hemoperitoneo y se logró extraer ambos fetos vivos. Se realizó una laparotomía media, supra e infraumbilical exploradora (poscesárea) y se halló una rotura hepática del lóbulo derecho. Se procedió a un empaquetamiento hepático con compresas y cierre temporal abdominal; entre tanto, el manejo del shock hipovolémico y la preeclampsia se continuó en la unidad de cuidados intensivos. La paciente se fue de alta en buenas condiciones a los 21 días. Conclusión: el síndrome HELLP produce complicaciones graves, como rotura hepática, que si no es tratada de forma correcta, temprana y multidisciplinaria, puede llevar a producir mortalidad materno-perinatal.

Introduction: HELLP syndrome and hepatic rupture are rare complications, especially in the case of twin pregnancy. Here, we present a case of ruptured hepatic subcapsular hematoma due to HELLP syndrome that caused complication in a twin pregnancy. This case required emergency Cesarean section and management of hypo- volemia hepatic packing. Case presentation: A 41-year-old female pregnant with twins (35 weeks) came to the emergency room for uterine contractions and absence of fetal movements. Due to severe bradycardia in both fetuses, emergency Cesarean section was performed. When the abdominal cavity was opened, hemoperitoneum was found, and both fetuses were extracted alive. A median, supra-, and infraumbilical exploratory laparotomy (post Cesarean section) was performed, and right lobe hepatic rupture was found. Subsequently, hepatic packing with compression and temporary abdominal closure was performed. Hypovolemic shock and preeclampsia was continuously managed in the intensive care unit. At 21 days, the patient was discharged in good condition. Conclusion: HELLP syndrome causes serious complications, such as hepatic rupture, which may lead to maternal and perinatal mortality if not correctly treated early in a multidisciplinary manner.

Introdução: a síndrome HELLP e a ruptura hepática são complicações raras, especialmente em casos de gravidez gemelar. Neste artigo, apresentamos o caso de um hematoma subcapsular hepático rompido devido à síndrome HELLP que complicou uma gravidez gemelar que exigiu uma cesariana de emergência e tamponamento hepático para o manejo da hipovolemia. Apresentação do caso: mulher, 41 anos, gestação gemelar de 35 semanas, recorre ao pronto-socorro por contrações uterinas e ausência de movimentos fetais. Devido à bradicardia grave em ambos os fetos, foi decidida uma cesariana de emergência. Ao abrir a cavidade abdominal o hemoperitônio é localizado, sendo possível extrair ambos os fetos vivos. Foi realizada laparotomia exploradora mediana, supra e infraumbilical (pós-cesariana) sendo constatada ruptura hepática do lobo direito. Foi realizado tamponamento hepático com compressas e fechamento abdominal temporário, e o manejo do choque hipovolêmico e da pré-eclâmpsia foi mantido na Unidade de Terapia Intensiva, onde a paciente recebeu alta em boas condições após 21 dias. Conclusão: a síndrome HELLP produz complicações graves como a ruptura hepática que, se não tratada de forma precoce e multidisciplinar, pode levar à mortalidade materna perinatal.

Bradycardia in a pediatric population after sugammadex administration: case series

Abstract Sugammadex is a distinctive neuromuscular reversal drug that acts by encapsulating the neuromuscular relaxant molecule and dislodging it from its site of action. Sugammadex has been approved for pediatric patients over 2 years of age. Although arrhythmias have been reported, there is no report of adverse effects in healthy children, such as severe bradycardia requiring intervention. We report two cases of severe bradycardia immediately after the administration of sugammadex in healthy children. Our aim is to alert to the occurrence of one of the most severe adverse effects of sugammadex, in the healthy pediatric population as well.

Caracterización del dengue con bradicardia en adolescentes

Introducción: El dengue es una enfermedad infecto contagiosa de variada intensidad, oriunda de climas tropicales como los que predominan en la región de las Américas. Es trasmitida por el mosquito Aedes aegypti y afecta a la población pediátrica. Su espectro clínico incluye alteraciones de la conducción cardíaca y de bradicardia. Objetivo: Caracterizar el dengue con bradicardia en adolescente. Métodos: Se realizó un estudio observacional descriptivo, longitudinal y retrospectivo en el Hospital Pediátrico Provincial Universitario Dr. Eduardo Agramonte Piña de la provincia Camagüey en el periodo comprendido desde enero a diciembre de 2021. El universo quedó conformado por 28 pacientes con diagnóstico de dengue que presentaron bradicardia. Los datos se recogieron en un formulario y se procesaron en una base de datos creada con SPSS versión 22. Resultados: Los resultados mostraron predominio de los pacientes del sexo masculino, del municipio Camagüey, entre los síntomas iniciales más frecuentes fue el dengue sin signos de alarma, el inicio de la bradicardia es durante la hospitalización, la bradicardia sinusal se presenta en todos los pacientes, en la mayoría de los casos la duración es en la etapa de recuperación. Conclusiones: Entre los síntomas encontrados predominaron los pacientes que no presentaron signos de alarma de dengue, la aparición de estos signos se asoció con bradicardia sinusal en la etapa de recuperación.

Introduction: Dengue is a contagious infectious disease of varying intensity that originates from tropical climates such as those that predominate in the region of the Americas. It is transmitted by the Aedes aegypti mosquito and affect the pediatric population. Its clinical spectrum includes alterations in cardiac conduction and bradycardia. Objective: To characterize dengue with bradycardia in adolescents. Methods: A descriptive, longitudinal and retrospective observational study was carried out at the Dr. Eduardo Agramonte Piña University Provincial Pediatric Hospital in Camagüey province in the period from January to December 2021.The universe was made up of 28 patients diagnosed with dengue who presented bradycardia. The data was collected in a from and processed in a database created with SPSS version 22. Results: The results grouped in the form of tables, showed a predominance of male patients, from the municipality of Camagüey, among the most frequent initial symptoms is dengue without warning signs, the onset of bradycardia is during hospitalization, it occurs in all patients, in most cases the duration is in the recovery stage. Conclusions: Among the symptoms found, patients who did not present dengue alarm signs was associated with sinus bradycardia during recovery.

Development of educational technology for transcutaneous pacemaker management in older adults undergoing mobile pre-hospital assistance / Desarrollo de una tecnología educativa para el manejo de marcapasos transcutáneos en ancianos en el servicio de móvil de atención prehospitalaria / Desenvolvimento de tecnologia educacional para manejo do marca-passo transcutâneo em idosos no atendimento pré-hospitalar móvel

ABSTRACT Objective: to develop educational technology for nurses on transcutaneous pacemaker management in older adults undergoing mobile pre-hospital assistance. Method: a methodological study developed with the Advanced Support Units of the Mobile Urgency Care Service of the 2nd Metropolitan Health Region of Paraná, Brazil, in three phases: 1) Pre-production - preparation of the video script; 2) Production - script validation by expert judges, storyboard development, voiceover recording and selection of images; and 3) Post-production - evaluation of the video by expert judges and diffusion. 51 specialist judge nurses took part in validation of the script; and 47 of them assessed the video. The data were collected between April and May 2022 using instruments with a Likert scale, via Google Forms. Descriptive statistics was applied for data analysis and a Content Validity Index of at least 0.78 was considered. Results: the judges suggested less technical language, inclusion of a scene and a correction referring to the positioning of the transcutaneous pacemaker adhesive pads. A 2D video lasting 8 minutes and 30 seconds was produced, which addressed actions and care measures in managing pacemakers in older adults. The following items were considered adequate: language, images, voiceover, duration, guidelines proposed and memorization of the messages (CVI=1.0). Conclusion: the educational technology developed was considered validated for nurses regarding the transcutaneous pacemaker management in older adults. The educational video can support decision-making in favor of patient and team safety and treatment efficacy, in order to qualify the assistance provided.

RESUMEN Objetivo: desarrollar una tecnología educativa para enfermeros sobre el manejo de marcapasos transcutáneos en ancianos, en el Servicio Móvil de Atención Prehospitalaria. Método: estudio metodológico desarrollado con las Unidades de Soporte Avanzado pertenecientes al Servicio Móvil de Atención de Urgencias de la 2º Región de Salud Metropolitana de Paraná, Brasil, en tres fases: 1) Pre-producción - elaboración del guión del video; 2) Producción - validación del guión a cargo jueces especialistas, elaboración del storyboard, grabación de las narraciones y selección de las imágenes; y 3) Post-producción - evaluación del video a cargo de jueces especialistas y divulgación del video. Los participantes del proceso de validación del guión fueron 51 jueces especialistas y enfermeros de profesión; y 47 de ellos evaluaron el video. Los datos se recolectaron entre abril y mayo de 2022 por medio de instrumentos con una escala de Likert, a través de Formularios Google. Se aplicó estadística descriptiva para el análisis de los datos y se consideró un Índice de Validez de Contenido de al menos 0,78. Resultados: los jueces sugirieron lenguaje menos técnico, incluir una escena y correcciones referentes a la ubicación de los parches adhesivos del marcapasos transcutáneo. El video se produjo en 2D y duró 8 minutos con 30 segundos, analizando acciones y precauciones en el manejo de marcapasos en ancianos. Los siguientes elementos se consideraron adecuados: lenguaje, imágenes, narración, duración, pautas de orientación propuestas y memorización de los mensajes (IVC=1,0). Conclusión: la tecnología educativa que se desarrolló fue considerada validada para enfermeros en relación con el manejo de marcapasos transcutáneos en ancianos. El video educativo puede asistir en el proceso de toma de decisiones en pos de la seguridad del paciente y del equipo de atención, al igual que para la eficacia del tratamiento, a fin de calificar la asistencia provista.

RESUMO Objetivo: desenvolver tecnologia educacional para enfermeiros sobre manejo do marca-passo transcutâneo em idosos, em atendimento pré-hospitalar móvel. Método: estudo metodológico, desenvolvido junto às Unidades de Suporte Avançado do Serviço de Atendimento Móvel de Urgência da 2º Regional de Saúde Metropolitana do Paraná, Brasil, em três fases: 1) pré-produção - elaboração do roteiro do vídeo; 2) produção - validação do roteiro por juízes especialistas, elaboração do storyboard, gravação das narrações e seleção de imagens; 3) pós-produção - avaliação do vídeo por juízes especialistas e divulgação do vídeo. Participaram da validação do roteiro 51 enfermeiros juízes especialistas; e 47 deles avaliaram o vídeo. Coletaram-se os dados entre abril e maio de 2022, por meio de instrumentos, com escala de Likert, via Google Formulários. Aplicou-se estatística descritiva para análise dos dados e considerou-se Índice de Validade de Conteúdo de pelo menos 0,78. Resultados: os juízes sugeriram linguagem menos técnica, inclusão de cena e correção referente ao posicionamento das pás adesivas do marca-passo transcutâneo. Produziu-se vídeo em 2D de 8 minutos e 30 segundos, que abordou ações e cuidados no manejo do marca-passo em idosos. Consideraram-se adequados os quesitos: linguagem, imagens, narração, tempo de duração, orientações propostas e memorizações das mensagens (IVC =1,0). Conclusão: a tecnologia educacional desenvolvida foi considerada validada para enfermeiros quanto ao manejo do marca-passo transcutâneo em idosos. O vídeo educacional pode subsidiar a tomada de decisões em prol da segurança do paciente, da equipe e da eficácia no tratamento, de modo a qualificar a assistência.

Role of activation of VGLUT2 neurons in vagal nodose ganglion in dexmedetomidine-caused bradycardia in mice / 中华麻醉学杂志

Objective:To evaluate the role of activation of vesicular glutamate transporter 2 (VGLUT2) neurons in vagal nodose ganglion in dexmedetomidine-caused bradycardia in mice.Methods:Ninety-six SPF healthy male VGLUT2-cre mice, aged 10 weeks, weighing 20-25 g, were divided into 6 groups ( n=16 each) by the random number table method: normal saline control group (NS group), dexmedetomidine group (Dex group), viral control + chemogenetic control + dexmedetomidine group (eGFP-NS+ Dex group), viral transfection + chemogenetic control + dexmedetomidine group (hM4Di-NS+ Dex group), viral control + chemogenetic inhibition + dexmedetomidine group (eGFP-CNO+ Dex group) and viral transfection + chemogenetic inhibition + dexmedetomidine group (hM4Di-CNO+ Dex group). Dexmedetomidine 100 μg/kg was intraperitoneally injected in Dex group. The equal volume of normal saline was intraperitoneally injected in NS group. AAV2/9-hSyn-DIO-hM4Di-eGFP was injected in the right nodose ganglion in hM4Di-NS+ Dex group and hM4Di-CNO+ Dex group, and AAV2/9-hSyn-DIO-eGFP was injected in the right nodose ganglion in eGFP-NS+ Dex group and eGFP-CNO+ Dex group, allowing the virus expression for 21 days. On the 22nd day after virus injection, clozapine-n-oxide (CNO) 5 mg/kg was intraperitoneally injected in hM4Di-CNO+ Dex group and eGFP-CNO+ Dex group, the equal volume of normal saline was intraperitoneally injected in hM4Di-NS+ Dex group and eGFP-NS+ Dex group, 1 h later the efficacy of CNO reached the peak, and then dexmedetomidine 100 μg/kg was intraperitoneally injected. The respiratory rate, heart rate, SpO 2 and discharge frequency of the right vagal nodose ganglion were synchronously measured by multi-channel electrophysiology in vivo. The expression of phosphorylated extracellular signal-regulated kinase (pERK) and VGLUT2 and co-expression of pERK and VGLUT2 in the right vagal nodose ganglion were detected by immunofluorescence assay. Results:Compared with NS group, the percentage of heart rate variation and neuron firing frequency after administration were significantly increased, and pERK expression was up-regulated in the other five groups ( P<0.05). Compared with Dex group, the percentage of heart rate variation and neuron firing frequency after administration were significantly decreased, and pERK expression was down-regulated in hM4Di-CNO+ Dex group, and no significant change was found in the parameters mentioned above in hM4Di-NS+ Dex group, eGFP-NS+ Dex group and eGFP-CNO+ Dex group ( P>0.05). Compared with hM4Di-CNO+ Dex group, the percentage of heart rate variation and neuron firing frequency after administration were significantly increased, and pERK expression was up-regulated in eGFP-CNO+ Dex group ( P<0.05). There was no significant difference in the percentage of respiratory variation and SpO 2 among the six groups ( P>0.05). The expression of VGLUT2-positive neurons was abundant in nodose ganglia, and the co-expression rate of pERK and VGLUT2 was nearly 90%. The co-expression rate of pERK and VGLUT2 decreased to about 30% after inhibition of VGLUT2 neurons in ganglion. Conclusions:The mechanism by which dexmedetomidine causes bradycardia is associated with activation of VGLUT2 neurons in vagal nodose ganglia in mice.

Changes in gap junction proteins Connexin30. 2 and Connexin40 expression in the sinoatrial node of rats with dexmedetomidine-induced sinus bradycardia

Abstract Background Dexmedetomidine (Dex) is widely used, and its most common side effect is bradycardia. The complete mechanism through which Dex induces bradycardia has not been elucidated. This research investigates the expression of gap junction proteins Connexin30.2 (Cx30.2) and Connexin40 (Cx40) within the sinoatrial node of rats with Dex-induced sinus bradycardia. Methods Eighty rats were randomly assigned to five groups. Saline was administered to rats in Group C. In the other four groups, the rats were administered Dex to induce bradycardia. In groups D1and D2, the rats were administered Dex at a loading dose of 30 μg.kg−1 and 100 μg.kg−1 for 10 min, then at 15 μg.kg−1.h−1 and 50 μg.kg−1.h−1 for 120 min separately. The rats in group D1A and D2A were administered Dex in the same way as in group D1and D2; however, immediately after the administration of the loading dose, 0.5 mg atropine was administered intravenously, and then at 0.5 mg.kg−1.h−1 for 120 min. The sinoatrial node was acquired after intravenous infusion was completed. Quantitative real-time polymerase chain reaction and western blot analyses were performed to measure mRNA and protein expression of Cx30.2 and Cx40, respectively. Results The expression of Cx30.2 increased, whereas the expression of Cx40 decreased within the sinoatrial node of rats with Dex-induced sinus bradycardia. Atropine reversed the effects of Dex on the expression of gap junction proteins. Conclusion Dex possibly altered the expression of gap junction proteins to slow down cardiac conduction velocity in the sinoatrial node.

Alteraciones electrocardiográficas en pacientes hospitalizados con COVID-19 / Electrocardiographic alterations in hospitalized patients with COVID-19

Resumen: Introducción: Como consecuencia del daño directo provocado por el virus SARS-CoV-2 sobre el corazón se producen alteraciones electrocardiográficas. Objetivo: Determinar si existe relación entre las alteraciones electrocardiográficas intrahospitalarias, con los antecedentes cardiovasculares y su evolución hospitalaria. Materiales y método: Estudio de cohortes, prospectivo, analítico, en 373 pacientes con el diagnóstico positivo de enfermedad por el nuevo coronavirus 2019 que ingresaron en la Unidad de Cuidados Intensivos del Hospital Docente "Comandante Manuel Fajardo" (La Habana, Cuba) entre marzo del 2020 y octubre del mismo año. Resultados: La mediana de edad fue de 69 (RIC 57-77); el 14.2% de los pacientes presentó fibrilación auricular, el 8,3% bloqueo de rama derecha y el 4.8% alteraciones del segmento ST. La edad, los antecedentes de cardiopatía isquémica y la diabetes mellitus se identificaron como variables predictoras independientes de alteraciones electrocardiográficas (RR 1.02; IC 95%: 1.01-1.04; p = 0.007; 2.21; IC 95%: 1.19-4.10, p = 0.012 y RR 1.71; IC 95%: 1.04-2.85, p = 0.036, respectivamente). Conclusiones: La prevalencia de alteraciones electrocardiográficas en pacientes hospitalizados con el nuevo coronavirus fue mayor comparada con otras series. Los antecedentes de cardiopatía isquémica y diabetes mellitus, además de la edad, se identificaron como variables predictoras independientes de alteraciones electrocardiográficas en pacientes con afección grave por la enfermedad del nuevo coronavirus 2019.

Abstract: Introduction: As a consequence of the direct damage caused by the virus on the heart, electrocardiographic alterations occur. Objective: To determine if there is a relationship between in-hospital electrocardiographic alterations with cardiovascular history and hospital evolution. Materials and method: Analytical prospective cohort study in 373 patients with a positive diagnosis of disease due to the new coronavirus 2019 who were admitted to the Intensive Care Unit of the "Comandante Manuel Fajardo" Universitary Hospital (Havana, Cuba) between March 2020 and October of the same year. Results: The median age was 69 (IQR; 57-77), 14.2% of patients had atrial fibrillation, 8.3% right bundle branch block, and 4.8% ST-segment abnormalities. Age, history of ischemic heart disease, and diabetes mellitus were identified as independent predictor variables of electrocardiographic abnormalities (RR 1.02; 95% CI: 1.01-1.04, p = 0.007; RR 2.21; 95% CI: 1.19-4.10, p = 0.012 and RR 1.71 95% CI: 1.04-2.85, p = 0.036, respectively). Conclusions: The prevalence of electrocardiographic abnormalities in hospitalized patients with the new coronavirus was higher compared to other series. History of ischemic heart disease and diabetes mellitus, in addition to age, were identified as independent predictors of electrocardiographic abnormalities in patients severely affected by the new coronavirus disease 2019.

Heart rate assessment after the first dose of Fingolimod / Avaliação da frequência cardíaca após a primeira dose de Fingolimode

To evaluate the cardiovascular function of patients who received the first dose of Fingolimod in a health center in the state of Rio Grande do Sul ­ Brazil. Methods: A retrospective database study, gathering clinical data and patients' electrocardiograms who received the first dose of Fingolimod 0.5mg at Centro de Diagnóstico Cardiológico from May 2013 to October 2020. Results: From 83 patients evaluated 64 (77.1%) were women. The average age of participants was 36.97 (±11.21) years old. Out of the 22 (26.5%) symptomatic patients, drowsiness was the most common symptom. There was a statistically significant difference (p<0.0001) in the heart rate that occurred early from the first hour after taking the medicine and went on to the fifth hour. Regarding systolic blood pressure, there was a difference (p <0.0001) between the measurement before taking the drug and the measurement six hours later. However, there was no difference in systolic pressure every hour between the second hour after drug administration. The same that happened to systolic blood pressure occurred to diastolic blood pressure. There was no statistical correlation between the age group and the analyzed variables. Conclusions: The clinical, hemodynamic, and electrocardiographic changes verified in the study sample were mild and resolved within 6 hours after the dose, which allows the use of this drug to treat MS safely in the analyzed group.

Objetivo: Avaliar a função cardiovascular de pacientes que receberam a primeira dose de Fingolimode em um centro de saúde do estado do Rio Grande do Sul ­ Brasil. Métodos: Estudo retrospectivo de banco de dados, reunindo dados clínicos e eletrocardiogramas de pacientes que receberam a primeira dose de Fingolimode 0,5mg no Centro de Diagnóstico Cardiológico de maio de 2013 a outubro de 2020. Resultados: Dos 83 pacientes avaliados, 64 (77,1%) eram mulheres. A média de idade dos participantes foi de 36,97 (±11,21) anos. Dos 22 (26,5%) pacientes sintomáticos, a sonolência foi o sintoma mais comum. Houve diferença estatisticamente significativa (p<0,0001) na frequência cardíaca que ocorreu desde a primeira hora após a administração do medicamento até a quinta hora. Em relação à pressão arterial sistólica, houve diferença (p<0,0001) entre a medida antes de tomar o medicamento e a medida seis horas depois. No entanto, não houve diferença na pressão sistólica a cada hora entre a segunda hora após a administração do medicamento. O mesmo que aconteceu com a pressão arterial sistólica ocorreu com a pressão arterial diastólica. Não houve correlação estatística entre a faixa etária e as variáveis Analisadas. Conclusões: As alterações clínicas, hemodinâmicas e eletrocardiográficas verificadas na amostra estudada foram leves e se resolveram em até 6 horas após a dose, o que permite o uso desse medicamento para o tratamento da SM com segurança no grupo analisado.

Interventions in the diagnosis and adoption of pacemaker therapy in sinus node dysfunction patients: Results from the IMPROVE Brady study

Aims: IMPROVE Brady assessed whether a process improvement intervention could increase adoption of guideline-based therapy in sinus node dysfunction (SND) patients. Methods: /Results: IMPROVE Brady was a sequential, prospective, quality improvement initiative conducted in India and Bangladesh. Patients with symptomatic bradycardia were enrolled. In Phase I, physicians assessed and treated patients per standard care. Phase II began after implementing educational materials for physicians and patients. Primary objectives were to evaluate the impact of the intervention on SND diagnosis and pacemaker (PPM) implant. SF-12 quality of life (QoL) and Zarit burden surveys were collected pre- and post-PPM implant. A total of 978 patients were enrolled (57.7 ± 14.8 years, 75% male), 508 in Phase I and 470 in Phase II. The diagnosis of SND and implantation of PPM increased significantly from Phase I to Phase II (72% vs. 87%, P < 0.001 and 17% vs. 32%, P < 0.001, respectively). Pacemaker implantation was not feasible in 41% of patients due to insurance/cost barriers which was unaltered by the intervention. Both patient QoL and caregiver burden improved at 6-months post-PPM implant (P < 0.001). Conclusions: A process improvement initiative conducted at centers across India and Bangladesh significantly increased the diagnosis of SND and subsequent treatment with PPM therapy despite the socio-economic constraints.

Analysis of death in children not submitted to cardiopulmonary resuscitation

Abstract Objective Describe the epidemiology of deaths in children not submitted to CPR, compare to a CPR group and evaluate patients' medical records of those not submitted to CPR. Methods Observational cross-sectional study assessing deaths between 2015 and 2018 in a pediatric tertiary hospital, divided into two groups: CPR and no- CPR. The source of data included the cardiorespiratory arrest register, based on Utstein style. Children's medical records in no-CPR group were researched by hand. Results 241 deaths were included, 162 in CPR group and 79 in the no-CPR group. Preexisting diseases were observed in 98.3% of patients and prior advanced intervention in 78%. Of the 241 deaths, 212 (88%) occurred in the PICU, being 138/162 (85.2%) in CPR group and 74/79 (93.7%) in no-CPR group (p= 0.018). Bradycardia as the initial rhythm was five times more frequent in the CPR group (OR 5.06, 95% CI 1.94-13,19). There was no statistically significant difference regarding age, gender, preexisting diseases, and period of the day of the occurrence of death. Medical records revealed factors related to the family decision-making process or the suitability of therapeutic effort. Discrepancies between the practice of CPR and medical records were identified in 9/79 (11,4%) records allocated to the no-CPR group. Conclusion Most deaths with CPR and with the no-CPR occurred in the PICU. Bradycardia as the initial rhythm was five times more frequent in the CPR group. Medical records reflected the complexity of the decision not to perform CPR. Discrepancies were identified between practice and medical records in the no-CPR group.

Tecnologia educacional para o manejo do marca-passo transcutâneo em idosos no atendimento pré-hospitalar móvel / Educational technology for the management of transcutaneous pacemakers in the elderly in mobile pre-hospital care

Resumo: Esta pesquisa compreende a produção de um vídeo educativo sobre ações e cuidados do enfermeiro no manejo do marca-passo transcutâneo em idosos em atendimento pré-hospitalar. Destaca-se a necessidade de elucidar o conhecimento e qualificar a assistência ao idoso a partir de recursos didáticos como o vídeo educativo. A pesquisa teve por objetivo elaborar uma tecnologia educacional para enfermeiros sobre o manejo do marca-passo transcutâneo em idosos em Atendimento Pré-Hospitalar Móvel. Trata-se de pesquisa metodológica de produção tecnológica, do tipo quantitativa descritiva, a qual baseia-se na construção e validação de um vídeo educativo, desenvolvido nas Unidades de Suporte Avançado do Serviço de Atendimento Móvel de Urgência, da 2ª Regional de Saúde Metropolitana do Estado do Paraná. O método de produção do vídeo foi composto por três fases: a) pré-produção, que consistiu na elaboração do roteiro do vídeo; b) produção, na qual ocorreu a validação do roteiro do vídeo por um grupo de juízes especialistas seguido da elaboração dos "storyboards", seleção das imagens, gravação das narrações e edição do vídeo; c) pós-produção, que se traduziu na validação do vídeo pelo grupo de juízes especialistas. Para a validação do roteiro foi utilizado um instrumento do tipo escala de "Likert" e para validação do vídeo um questionário elaborado e adaptado a partir do modelo de Razera et al. (2016). Após a validação pelos juízes, o vídeo foi divulgado em um canal do Youtube. Quanto ao conteúdo do roteiro foram elencados quatro blocos: conhecimentos gerais sobre o MPTC em idosos, cuidados de enfermagem na utilização do MPTC, etapas para o manejo do MPTC e as possíveis complicações e limitações na utilização do MPTC, e foi validado por 51 juízes especialistas. O vídeo foi validado por 47 juízes especialistas que participaram da etapa anterior. Em relação ao gênero dos juízes especialistas, as mulheres representaram na fase 1 da pesquisa (F1) 56,9% e na fase 2 (F2) 57,4%. Quanto à idade dos participantes a maioria apresentou entre 35 e 45 anos (F1 62,7% e F2 61,7%). Produziu-se um vídeo de duração de oito minutos e 30 segundos em animação 2D, fundamentado a partir de uma revisão integrativa e consultas em guias e "guidelines" de sociedades de cardiologia nacional e internacional que abordam as ações e cuidados no manejo do marca-passo transcutâneo em idosos. Conclui-se que a tecnologia desenvolvida, nos quesitos: linguagem, imagens, narração, adequação quanto ao tempo de duração, orientações propostas e memorizações das mensagens, alcançou índices que demostram a viabilidade na identificação das ações e cuidados pelo enfermeiro no manejo do marca-passo transcutâneo em idosos no atendimento pré-hospitalar. Assim, foi elaborada e validada uma estratégia para a educação em saúde que contribui para subsidiar a equipe na tomada de decisões, colaborando para a segurança do paciente e da equipe, assim como para o sucesso no tratamento. A tecnologia educacional desenvolvida pode ampliar e reciclar continuamente o conhecimento dos enfermeiros da Unidade de Suporte Avançado de Vida sobre as ações e cuidados essenciais no manuseio do MPTC em idoso com bradiarritmias no Atendimento Pré-Hospitalar Móvel.

Abstract: This research grasps the production of an educational video about the handling of the transcutaneous pacemaker (TCPM) in elderly in Mobile Pre-Hospital Care. The need to clarify knowledge and qualify the elderly's care through didactic resources, such as the educational video, is highlighted. The aim of the research was to elaborate an educational technology for nurses about the handling of the transcutaneous pacemaker (TCPM) in elderly in Mobile Pre-Hospital Care. This is a methodological research of technology production, of the quantitative descriptive type, which is based in the construction and validation of an educational video, developed in Advanced Care Units (ACUs) of Mobile Emergency Medical Service, of the 2nd Metropolitan Health Regional of the State of Paraná. The production method of the video was composed by three phases: a) pre-production, which consisted in the screenplay elaboration; b) production, in which there was the validation of the video screenplay by a group of specialist judges followed by the elaboration of storyboards, selection of images, recordings of narrations and video editing; c) post-production, which consisted in the validation of the video by the group of specialist judges. For the validation of the screenplay a scale-like "likert" instrument was used, and for the validation of the video, a questionnaire made and adapted from Razera's et al model. (2016). After validation by the judges, the video was shared on a Youtube channel. As for the content of the screenplay, they were divided in four blocks: general knowledge about TCPM in elderly, nursing care when using TCPM, phases for the handling of TCPM and the possible complications and limitations utilizing TCPM, it was approved by 51 specialist judges. The video itself was approved by 47 specialist judges who took part in the former phase. With respect to gender of the specialist judges, women represented in phase 1 of the research (P1) 56.9% and in phase 2 (P2) 57.4%. As for the age of participants, most of them were between 35 and 45 years old (P1 62.7% and P2 61.7%). There was the production of a video lasting eight minutes and 30 seconds in 2D animation, reasoned by an integrative review and bibliographic research in guidelines of national and international cardiology societies that approach nurses' actions and care in the handling of the transcutaneous pacemaker in elderly in prehospital care. It concludes that the developed technology in terms of language, images, narration, adjustment to duration time, proposed guidance and message memorization, reached indexes that show viability in identification of nurses' actions and care in the handling of the transcutaneous pacemaker in elderly in pre-hospital care. Therefore, it was elaborated and validated a strategy for health education, that contributes to subsidize the team in decision making, contributing to the safety of the patient and the team, as well as for treatment success. The developed educational technology can broaden and continually recycle the knowledge of nurses from the Units of Intensive Life Support (SAV) about necessary actions and care in the handling of the transcutaneous pacemaker in elderly with bradyarrhythmia in Mobile Pre-Hospital Care.

Estimulación cardíaca temporal de larga duración con cable activo y marcapaso permanente externo / Long-term temporary cardiac pacing with active lead and external permanent pacemaker

INTRODUCCIÓN. La estimulación cardíaca temporal de larga duración con cable activo y marcapaso permanente externo es una técnica recientemente incluida en las guías de manejo de bradicardias sintomáticas. CASOS CLÍNICOS. Se describen 4 casos de pacientes sometidos a estimulación cardíaca temporal de larga duración con cable activo y marcapaso permanente externo de la unidad de Hemodinámica del Hospital de Especialidades Carlos Andrade Marín, con indicaciones diversas. DISCUSIÓN. El tiempo medio de permanencia con el cable activo y el marcapaso externalizado fue 23 días. No hubo complicaciones del procedimiento. Un paciente falleció por causas no relacionadas con la estimulación y 2 se recuperaron en sus domicilios. CONCLUSIÓN. La técnica de estimulación temporal utilizando marcapasos permanentes recuperados se muestra extremadamente útil para mantener un marcapaso cardíaco seguro, incluso ambulatorio y por largo tiempo, hasta el implante de dispositivos definitivos. Su limitación es la factibilidad de hacerlo solo en centros de tercer nivel.

INTRODUCTION. Long-duration temporary cardiac pacing with active lead and permanent external pacemaker is a technique recently included in the guidelines for the management of symptomatic bradycardias. CLINICAL CASES. We describe 4 cases of patients who underwent long-duration temporary cardiac pacing with active lead and external permanent pacemaker at the Hemodynamics Unit of the Hospital de Especialidades Carlos Andrade Marín, with different indications. DISCUSSION. The mean length of stay with the active lead and externalized pacemaker was 23 days. There were no procedural complications. One patient died of causes unrelated to pacing and 2 recovered at home. CONCLUSIONS. The technique of temporary pacing using retrieved permanent pacemakers is extremely useful for maintaining safe cardiac pacing, even on an outpatient basis and for a long period of time, until implantation of definitive devices. Its limitation is the feasibility of doing it only in third level centers.

Initial Experience with Fractionation Mapping in the Identification of Vagal Ganglionated Plexus During Cardioneuroablation

This is a series case report of five symptomatic patients presented with diagnosis of sinus bradycardia, first and second degrees atrioventricular (AV) blocks, that were referred to pacemaker implantation. During the screening, a functional cause for the bradycardia and AV blocks were documented by treadmill stress test, 24-hour Holter monitoring and atropine test. After the confirmation of the diagnosis, patients were submitted to cardioneuroablation on an anatomical basis supported by a tridimensional electroanatomical fractionation mapping software. The technique and the acute and short-term results of the cardioneuroablation are described.

Bradicardia sinusal inducida por corticoesteroides en un niño con insuficiencia suprarrenal y septicemia / Corticosteroid-induced sinus bradycardia in a young boy with adrenal insufficiency and sepsis

La bibliografía no incluye frecuentemente alteraciones en el ritmo cardíaco de los pacientes que reciben corticoesteroides; se desconoce su mecanismo exacto. En este artículo, presentamos el caso de un paciente con bradicardia sinusal asociada con una dosis de estrés de corticoesteroides. Se ingresó a un niño de 9 años con antecedentes de panhipopituitarismo con gastroenteritis y neumonía y presentó choque septicémico el día de la hospitalización. El tratamiento con líquidos intravenosos, dosis de estrés de hidrocortisona y antibióticos permitió la recuperación. Sin embargo, luego se documentó bradicardia sinusal con una frecuencia cardíaca de 45 latidos por minuto. Esta se resolvió después de reducir gradualmente la hidrocortisona. La bradicardia sinusal inducida por corticoesteroides es un efecto adverso que suele resolverse tras interrumpir el tratamiento. Se debe considerar el monitoreo hemodinámico en estos casos. Este es el primer informe de bradicardia sinusal posterior al uso de hidrocortisona en niños con insuficiencia suprarrenal

The literature does not commonly describe cardiac rhythm disturbances, including bradycardia, in patients who are receiving corticosteroids, and the exact mechanism of such disturbances remains unknown. Herein, we present a case of sinus bradycardia associated with stress-dose corticosteroid therapy. A nine-year-old boy with a history of panhypopituitarism was admitted with gastroenteritis and pneumonia and developed septic shock on the day of admission. Management using intravenous fluids, stress doses of hydrocortisone, and antibiotics resulted in full recovery. However, within 24 hours following treatment, sinus bradycardia was documented, with a heart rate of 45 beats per minute (BPM). The bradycardia resolved after the dose of hydrocortisone was decreased gradually. Corticosteroidinduced sinus bradycardia is an adverse effect that usually resolves after corticosteroid treatment is discontinued. During stress-dose corticosteroid therapy, hemodynamic monitoring should be considered. To our knowledge, this is the first report of sinus bradycardia following the use of hydrocortisone in children who have adrenal insufficiency.

Idioventricular rhythm and shock after a honeybee sting / Ritmo idioventricular y shock después de un piquete de abeja

Abstract Objective: The objective of this study was to describe the case of a 19-year-old male presenting with bradycardia and hypotension after a honeybee sting making a review of the literature and pathophysiology of the cardiovascular and electrocardiogram (EKG) changes after a bee sting. Methods: The patient's airway was inspected and secured. Electrocardiogram with an idioventricular rhythm at 41' bpm. Oxygen was administered, an intravenous access was established, and the transcutaneous pacemaker leads were placed on the chest of the patient, then published guidelines management was induced. Results: The EKG showed idioventricular rhythm at a rate of 41 beats/min that resolved to a normal sinus rhythm after treatment. Conclusions: A full and prompt cardiovascular evaluation should be performed in all patients presenting to the emergency department after a bee sting, and published guidelines regarding the management of bradycardia and anaphylaxis should be followed to achieve successful outcomes.

Resumen Objetivo: Describir el caso de un paciente masculino de 19 años que presenta bradicardia e hipotensión después de una picadura de abeja haciendo una revisión de la literatura y fisiopatología de los cambios cardiovasculares y electrocardiográficos después de una picadura de abeja. Métodos: Se inspeccionó y aseguró la vía aérea del paciente. Un rastreo de ECG realizado al ingreso reveló ritmo idioventricular a una ritmo de 41 latidos por minuto. Se administró oxígeno, se estableció un acceso IV y se colocaron los cables del marcapasos transcutáneo en el tórax del paciente, luego se indujo el manejo de las guías publicadas. Resultados: El electrocardiograma mostró un ritmo idioventricular a una frecuencia de 41 latidos por minuto que se resolvió a un ritmo sinusal normal después del tratamiento. Conclusiones: Se debe realizar una evaluación cardiovascular completa y rápida en todos los pacientes que se presentan al departamento de emergencias después de una picadura de abeja, y se deben seguir las pautas publicadas sobre el manejo de la bradicardia y la anafilaxia para lograr resultados exitosos.

Effect of transcutaneous electrical acupoint stimulation at Neiguan on dexmedetomidine-induced bradycardia in patients / 中华麻醉学杂志

Objective:To evaluate the effect of transcutaneous electrical acupoint stimulation (TEAS) at Neiguan on dexmedetomidine-induced bradycardia in patients.Methods:Sixty American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients, aged 20-50 yr, weighing 48-60 kg, scheduled for elective gynecological surgery under general anesthesia, were divided into 2 groups ( n=30 each) using a random number table method: control group (group C) and TEAS group (group T). Dexmedetomidine 1 μg/kg was infused intravenously over 10 min followed by intravenous infusion 0.5 μg·kg -1·min -1 in two groups, and the patients in group T simultaneously received TEAS (frequency 2/100 Hz, disperse-dense wave, intensity 5-10 mA according to the current that could be tolerated) at bilateral Neiguan acupoints.The stimulator was only connected, and no current was given in group C. Before the infusion of dexmedetomidine (T 0) and at 10 min of dexmedetomidine infusion (T 1), mean arterial pressure (MAP) and heart rate (HR) was recorded, and electrocardiogram (ECG) was collected to calculate the PR interval, QT interval, QT interval, Tp-e interval and index of cardiac electrophysiological balance (iCEB). The development of arrhythmia was recorded. Results:Compared with the baseline value at T 0, HR was significantly decreased, and QT interval and PR interval were prolonged at T 1 in two groups, and iCEB was increased, and Tp-e interval was prolonged at T 1 in group C ( P<0.05). Compared with group C, HR was significantly increased, PR interval and Tp-e interval were shortened at T 1, and the incidence of bradycardia and atrioventricular block was increased in group T ( P<0.05). Conclusion:TEAS at Neiguan can decrease the risk of bradycardia induced by dexmedetomidine, and the mechanism may be related to shortening atrioventricular conduction time and reducing heterogeneity of ventricular repolarization in patients.

Clinical features of infants with breath-holding spells and the characteristics of electroencephalogram as well as heart rate during the episode / 中华实用儿科临床杂志

Objective:To analyze the electroencephalogram (EEG) characteristics, heart rate (HR) changes and clinical characteristics during the episode of breath-holding spells(BHS), thus providing refe-rences for the differential diagnosis of infants with BHS.Methods:This was a retrospective single-center analysis involving consecutive 14 infants with HBS admitted in Wuhan Children′s Hospital, Tongji Medical College, Huazhong University of Science & Technology from November 2016 to December 2019.Results:A total of 16 episodes of crying-induced BHS were detected in the EEG of 14 infants, of which 3 were mild episodes without loss of consciousness and 13 were severe episodes with loss of consciousness.During the mild episodes, EEG presented a phase with slow-slow mode, and the average duration of each phase was (23.3±5.8) s and (16.7±5.8) s, respectively.In addition, the average recovery time from unconsciousness in 13 severe episodes was (16.7±12.3) s. Among the 13 severe episodes, EEG of 12 episodes presented a phase with slow-flat-slow mode, and the average duration of each phase was (26.4±8.5) s, (8.0±5.1) s and (84.6±46.6) s, respectively.Besides, the second slow wave phase usually started by the generalized delta rhythm with predominance in leads of anterior brain, with the average duration at (6.7±1.5) s. During the 16 episodes of BHS, cyanosis occurred in the first phase of slow wav, and loss of consciousness occurred in the flat phase.Transient bradycardia was observed in the second slow wave phase of 7 episodes, the first slow wave phase of 4 episodes and the flat phase of 2 episodes.Conclusions:Typical EEG pattern of in infants with mild BHS is slow-slow mode, and most of them with severe BHS is slow-flat-slow mode.In the first slow wave phase, slow wave always evolves rapidly.The unconsciousness mostly occurs in the flat period, the lasting time of which is closely related to the duration of the flat phase.The generalized delta rhythm with predominance in leads of anterior brain mostly starts in the second slow wave phase.A brief bradycardia often accompanies with the episodes of BHS in infants.