Metahemoglobinemia congénita. Reporte de caso / Congenital Methemoglobinemia. A Case Report

Resumen La metahemoglobinemia ocasionalmente causa cianosis, particularmente cuando es congénita. Debido a sus vías enzimáticas deficientes y a la disminución de la capacidad de transporte de oxígeno, para los pacientes con metahemoglobinemia congénita es importante evitar la exposición a agentes oxidantes. A continuación, presentamos un paciente pediátrico con metahemoglobinemia congénita no diagnosticada preoperatoriamente que fue sometido a cateterismo con diagnóstico probable de hipertensión pulmonar bajo anestesia general. El paciente pediátrico era un niño de 10 años que presentaba una lectura de oximetría de pulso (SpO2) 92% antes de la inducción de la anestesia. La metahemoglobinemia se sospechó intraoperatoriamente por primera vez debido a un desajuste de la SpO2 de la oximetría de pulso digital y la SaO2 (saturación arterial de oxígeno), y luego se confirmó mediante múltiples longitudes de onda con la CO-oximetría. Se discuten la fisiopatología, etiología, manifestaciones clínicas, consideraciones anestésicas y opciones de tratamiento de la metahemoglobinemia.

Abstract Methemoglobinemia occasionally causes cyanosis particularly in congenital methemoglobinemia. Avoidance of exposure to oxidizing agents is important for patients with congenital methemoglobinemia because of their deficient enzymatic pathways and decreased oxygen-carrying capacity. Here, we present a pediatric patient with preoperatively undiagnosed congenital methemoglobinemia who underwent catheterization with probably diagnosis of pulmonar hypertension under general anesthesia. The pediatric patient was a 10-year-old who displayed a low pulse oximetry reading of 92% prior to induction of anesthesia. Methemoglobinemia was first suspected intraoperatively because of a mismatch of SpO2 of finger pulse oximetry and SaO2 of arterial blood, and was later confirmed by multiplewavelength CO-oximetry. The pathophysiology, etiology, clinical manifestations, anesthetic considerations, and treatment options of methemoglobinemia are discussed.

Oximetria de pulso neonatal: capacitação de profissionais e estudantes da saúde no formato remoto e presencial / Neonatal pulse oximetry: training healthcare professionals and students in remote and on-site format / Pulsioximetría neonatal: formación de profesionales y estudiantes de la salud a distancia y presencial

Introdução:A oximetria de pulso neonatal compõe o Programa Nacional de Triagem Neonatal do Brasil desde 2014. Entretanto, existem poucos registros de sua efetiva implementação na rotina de cuidados materno-infantis no país.Objetivo:O objetivo deste trabalho foi relatar a experiência em ações de educação em saúde a profissionais e estudantes da área da saúde e à população em geral, em temas relacionados ao Teste do Coraçãozinho.Metodologia:Trata-se de um estudo descritivo, do tipo relato de experiência, executado entre julho de 2019 a julho de 2021, antes e durante a pandemia de Covid-19, por discentes vinculados ao projeto de extensão de serviço universitário de referência do Rio Grande do Norte. O público-alvo das capacitações foram estudantes e profissionais do curso de Medicina, Enfermagem e Técnico de Enfermagem dos municípios de Natal, Macaíba, Santa Cruz, Currais Novos, Mossoró e Caicó, do estado do Rio Grande do Norte. Foi realizada uma capacitação no formato presencial antes da pandemia causada pela COVID-19 ou no formato remoto como adaptação das atividades durante o período pandêmico. A metodologia dos treinamentos foi composta por um formulário de pré e pós teste visando avaliar a eficácia das capacitações, somado a fundamentação teórica, simulações teórico-práticas e discussão de casos clínicos. Além disso, foram promovidas ações educativas destinadas à população geral. Resultados:As capacitações ministradas a profissionais e estudantes da área da saúde totalizaram 1212 participantes. Os eventos direcionados ao meio externo, como transmissões ao vivo e conteúdos audiovisuais em redes sociais, atingiram 12.931 pessoas. O fomento à produção científica envolveu a elaboração de 95 trabalhos aprovados em congressos regionais, nacionais e internacionais, bem como a organização de um congresso internacional nas áreas de Pediatria e Cardiologia, contabilizando 29.007 inscritos.Conclusões:Evidenciou-se a importância de intervenções para melhoria da linha de cuidado à criança cardiopata (AU).

Introduction:Neonatal pulse oximetry has been part of the National Newborn Screening Program in Brazil since 2014. However, there are few reports of its effective implementation in routine maternal and child care in the country. Objective: This study reports on the experience of providing health education to health professionals, students and the general population on topics related to neonatal pulse oximetry.Methodology: This is a descriptive study, experience report type, carried out between July 2019 and July 2021,before and during the Covid-19 pandemic, by students linked to the extension project of a reference university service in Rio Grande do Norte. The target audience of the training were students and professionals from the Medicine, Nursing and Nursing Technician course in the municipalities of Natal, Macaíba, Santa Cruz, Currais Novos, Mossoró and Caicó, in the state of Rio Grande do Norte. Training was carried out in person before the COVID-19 pandemic or remotely as an adaptation of activities during the pandemic period. The training methodology consisted of a pre-and post-test form aimed at evaluating the effectiveness of the training, in addition to theoretical foundations, theoretical-practical simulations and discussion of clinical cases. In addition, educational activities were promoted for the general population.Results:Training given to health professionals and students totaled 1212 participants. Events directed to the external environment, such as live broadcasts and audiovisual content on socialnetworks, reached 12,931 people. Promotion of scientific production involved the preparation of 95 papers approved in regional, national, and international congresses, as well as the organization of an international congress in the areas of Pediatrics andCardiology, with 29,007 registered participants. Conclusions: The importance of interventions to improve the line of care for children with heart disease was evidenced (AU).

Introducción: La oximetría de pulso neonatal forma parte del Programa Nacional de Tamizaje Neonatal en Brasil desde 2014. Sin embargo, existen pocos registros de su implementación efectiva en la atención materno-infantil de rutina en el país. Objetivo: El objetivo de este trabajo fue relatar la experiencia en acciones de educación en salud para profesionales y estudiantes del área de la salud y la población en general, sobre temas relacionados con El Test del Corazoncito. Metodología:Se trata de un estudiodescriptivo, del tipo relato de experiencia, realizado entre julio de 2019 y julio de 2021, antes y durante la pandemia de la Covid-19, por estudiantes vinculados al proyecto de extensión de un servicio universitario de referencia en Rio Grande Norte. El público objetivo de la capacitación fueron estudiantes y profesionales de la carrera de Medicina, Enfermería y Técnico en Enfermería de los municipios de Natal, Macaíba, Santa Cruz, Currais Novos, Mossoró y Caicó, en el estado de Rio Grande do Norte. La formación se realizó en formato presencial antes de la pandemia causada por el COVID-19 o a distancia como adaptación de las actividades durante el periodo de pandemia. La metodología de capacitación consistió en un formulario de pre y post test dirigido a evaluar la efectividad de la capacitación, además de fundamentos teóricos, simulacros teórico-prácticos y discusión de casos clínicos. Además, se promovieron actividades educativas para la población en general. Resultados:La formación impartida a profesionales y estudiantes de la salud totalizó 1212 participantes. Los eventos dirigidos al entorno externo, como retransmisiones en directo y contenidos audiovisuales en redes sociales, llegaron a 12.931 personas. El fomento de la producción científica implicó la elaboración de 95 trabajos aprobados en congresos regionales, nacionales e internacionales, así como la organización de un congreso internacional en las áreas de Pediatría y Cardiología, con 29.007 inscritos. Conclusiones:Se destacó la importancia de las intervenciones para mejorar la línea de atención a los niños con cardiopatías (AU).

[ROX index to predict failure with low flow devices in COVID-19]. / Índice ROX para predecir falla con dispositivos de bajo flujo en COVID-19.

Background: The ROX index (iROX) obtained from pulse oximetry saturation/inspired fraction of oxygen and respiratory rate, predicts success with high-flow nasal cannula (HFNC), however its performance for low-flow oxygenation devices (DOBF) is unknown. Objective: To determine suitability of iROX at 12 hours as a predictor of mechanical ventilation (VMI) in hospitalized patients with severe COVID-19 and DOBF. Material and methods: An historical cohort was performed. Adults with COVID-19, hospitalized, with supplemental oxygen supply are included, excluding patients with pathologies in chronic stages that could alter the results, calculating the iROX at 12 hours, obtaining the cut-off point using a ROC curve and Youden index, the risk of VMI is prolonged using relative risk (RR), with 95% confidence intervals (95%CI). Confounding variables were evaluated to determine the performance of the iROX. The dependent variable mechanical ventilation recorded as reported in the file and the independent iROX obtained in the same way as the previous one. Results: 63 patients with a median age of 62 years were included. The best iROX cut-off point at 12 hours was 5.35. With this cut-off point, VMI was associated with a RR of 8.75 (95% CI 2.36-32.35). In the multivariate model with an OR of 9.26; (95% CI, 2.39 - 35.78), after initiation of DOBF was consistently associated with an increased risk of intubation. Conclusion: In hospitalized patients with severe COVID-19, an iROX < 5.35 at 12 hours appears to be a predictor for the onset of VMI.

Introducción: el índice ROX (iROX) obtenido a partir de la saturación por oximetría de pulso/fracción inspirada de oxígeno y frecuencia respiratoria, pronostica el éxito con cánulas nasales de alto flujo (CNAF), pero se desconoce su desempeño para dispositivos de oxigenación de bajo flujo (DOBF). Objetivo: determinar el punto de corte y el desempeño del iROX a las 12 horas como predictor para el inicio de la ventilación mecánica (VMI) en los pacientes hospitalizados con COVID-19 grave y DOBF. Material y métodos: se realizó un estudio tipo cohorte histórica, en el que se incluyeron pacientes adultos con COVID-19, hospitalizados, con aporte de oxígeno suplementario. Se excluyeron los pacientes con patologías en etapas crónicas que pudieran alterar los resultados, calculando el iROX a las 12 horas y obteniendo el punto de corte mediante una curva ROC e índice de Youden, determinando el riesgo de VMI usando riesgo relativo (RR), con intervalos de confianza de 95% (IC95%). Evaluando otras variables confusoras para conocer el desempeño del iROX. La variable dependiente fue ventilación mecánica, obtenida por lo reportado en el expediente y la independiente el iROX, obtenida igual que la anterior. Resultados: se incluyeron 63 pacientes con una mediana de edad de 62 años. El mejor punto de corte del iROX a las 12 horas fue de 5.35. Con este punto de corte se asoció a VMI con un RR de 8.75 (IC95%: 2.36-32.35). En el modelo multivariado con un OR de 9.26; (IC95%: 2.39-35.78), después del inicio del DOBF se asoció consistentemente con un mayor riesgo de intubación. Conclusión: en pacientes hospitalizados con COVID-19 grave, un iROX < 5.35 a las 12 horas es un predictor para el inicio de la VMI.

Arterial oxygen saturation in healthy Mexican full-term newborns at different altitudes above sea level.

BACKGROUND: Arterial oxygen saturation (SaO2) values are used to make clinical decisions that might change a patient's prognosis, and it has been proposed as the fifth vital sign. This study aimed to determine the variation of SaO2 at different altitudes above sea level (ASL) in healthy Mexican full-term newborns. METHODS: From July 2018 to June 2019, a cross-over study was conducted in six hospitals at different altitudes ASL in Mexico. SaO2 was measured in 4015 newborns after the first 24 h of birth and before leaving the hospital using pulse oximetry. We analyzed three groups: < 250 m ASL (group 1), 1500 m ASL (group 2), and 2250 m ASL (group 3). RESULTS: The mean SaO2 was 97.6 ± 1.8%. For group 1, mean oxygen saturation was 98.2 ± 1.9%; for group 2, 96.7 ± 1.9%, and for group 3, 96.0 ± 2.1%. A statistically significant difference was observed among the groups (p < 0.001), and this difference was higher between groups 1 and 2 (1.5%, p < 0.001). Linear regression analysis showed a decrease in oxygen saturation of 1.01% for every 1000 m ASL. CONCLUSIONS: We demonstrated a statistically significant reduction in SaO2 levels at higher altitudes. This observation can be relevant for clinical decision-making based on pulse oximetry such as critical congenital heart disease screening in Mexico, where more than half of the population lives above 1500 m ASL.

INTRODUCCIÓN: Los valores de SaO2 (saturación de oxígeno) se utilizan para la toma de decisiones clínicas que podrían cambiar el pronóstico del paciente. El objetivo de este estudio fue determinar la variación de la SaO2 en recién nacidos mexicanos a término sanos a diferentes altitudes en México. MÉTODOS: Se llevó a cabo un estudio transversal en seis hospitales situados a diferentes altitudes en México. Se determinó la SaO2 usando oximetría de pulso en 4015 recién nacidos después de las primeras 24 horas de vida, pero antes del egreso del hospital de nacimiento. Se formaron tres grupos para el análisis: grupo 1 con altitud < 250 m sobre el nivel del mar (SNM); grupo 2, altitud de 1500 m SNM y grupo 3, altitud de 2250 m SNM. RESULTADOS: El promedio de la SaO2 fue de 97.6 ± 1.8%. Para el grupo 1, la media fue 98.2 ± 1.9%, para el 2, 96.7 ± 1.9% y para el 3, 96.0 ± 2.1%. Se observó una diferencia estadísticamente significativa entre los grupos (p < 0.001), que fue mayor entre los grupos 1 y 2 (1.5%, p < 0.001). El análisis de regresión lineal mostró una reducción de 1.01% en la SaO2 por cada 1000 m SNM. CONCLUSIONES: Se demostró una disminución estadísticamente significativa de los valores de SaO2 conforme aumenta la altitud. Esto puede ser de particular relevancia en la toma de decisions clínicas basadas en la oximetría de pulso, como el tamiz neonatal cardiaco, sobre todo en México donde mas de la mitad de la población vive a una altitud superior a 1500 m SNM.

Arterial oxygen saturation in healthy Mexican full-term newborns at different altitudes above sea level / Saturación arterial de oxígeno en recien nacidos mexicanos a término sanos a diferentes altitudes sobre el nivel del mar

Abstract Background: Arterial oxygen saturation (SaO2) values are used to make clinical decisions that might change a patient's prognosis, and it has been proposed as the fifth vital sign. This study aimed to determine the variation of SaO2 at different altitudes above sea level (ASL) in healthy Mexican full-term newborns. Methods: From July 2018 to June 2019, a cross-over study was conducted in six hospitals at different altitudes ASL in Mexico. SaO2 was measured in 4015 newborns after the first 24 h of birth and before leaving the hospital using pulse oximetry. We analyzed three groups: < 250 m ASL (group 1), 1500 m ASL (group 2), and 2250 m ASL (group 3). Results: The mean SaO2 was 97.6 ± 1.8%. For group 1, mean oxygen saturation was 98.2 ± 1.9%; for group 2, 96.7 ± 1.9%, and for group 3, 96.0 ± 2.1%. A statistically significant difference was observed among the groups (p < 0.001), and this difference was higher between groups 1 and 2 (1.5%, p < 0.001). Linear regression analysis showed a decrease in oxygen saturation of 1.01% for every 1000 m ASL. Conclusions: We demonstrated a statistically significant reduction in SaO2 levels at higher altitudes. This observation can be relevant for clinical decision-making based on pulse oximetry such as critical congenital heart disease screening in Mexico, where more than half of the population lives above 1500 m ASL.

Resumen Introducción: Los valores de SaO2 (saturación de oxígeno) se utilizan para la toma de decisiones clínicas que podrían cambiar el pronóstico del paciente. El objetivo de este estudio fue determinar la variación de la SaO2 en recién nacidos mexicanos a término sanos a diferentes altitudes en México. Métodos: Se llevó a cabo un estudio transversal en seis hospitales situados a diferentes altitudes en México. Se determinó la SaO2 usando oximetría de pulso en 4015 recién nacidos después de las primeras 24 horas de vida, pero antes del egreso del hospital de nacimiento. Se formaron tres grupos para el análisis: grupo 1 con altitud < 250 m sobre el nivel del mar (SNM); grupo 2, altitud de 1500 m SNM y grupo 3, altitud de 2250 m SNM. Resultados: El promedio de la SaO2 fue de 97.6 ± 1.8%. Para el grupo 1, la media fue 98.2 ± 1.9%, para el 2, 96.7 ± 1.9% y para el 3, 96.0 ± 2.1%. Se observó una diferencia estadísticamente significativa entre los grupos (p < 0.001), que fue mayor entre los grupos 1 y 2 (1.5%, p < 0.001). El análisis de regresión lineal mostró una reducción de 1.01% en la SaO2 por cada 1000 m SNM. Conclusiones: Se demostró una disminución estadísticamente significativa de los valores de SaO2 conforme aumenta la altitud. Esto puede ser de particular relevancia en la toma de decisions clínicas basadas en la oximetría de pulso, como el tamiz neonatal cardiaco, sobre todo en México donde mas de la mitad de la población vive a una altitud superior a 1500 m SNM.

Sensibilidad y especificidad de la oximetría de pulso para detectarcardiopatías congénitas en recién nacidos / Sensitivity and specificity of pulse oximetry to detect congenital heart disease in newborns

Resumen Objetivo: Determinar la sensibilidad y especificidad de la oximetría de pulso, para detectar cardiopatías congénitas en recién nacidos sanos en alojamiento conjunto. Material y métodos: El estudio es de tipo multicéntrico, prospectivo y transversal, evaluando pacientes del Hospital Regional de Alta Especialidad "Bicentenario 2010" y el Hospital General "Dr. Norberto Treviño Zapata", en ciudad Victoria Tamaulipas, en un periodo que comprendió desde marzo del 2015 a marzo de 2017. Se determinó la oximetría de pulso a recién nacidos sanos antes del egreso hospitalario. Resultados: Se estudiaron 511 recién nacidos. La sensibilidad detectada fue del 88.89 % y una especificidad del 99.80%. Conclusión: Las cardiopatías congénitas en recién nacidos sanos en alojamiento conjunto, se pueden determinar mediante la oximetría de pulso pre y post-ductal.

Abstract Objective: To determine the sensitivity and specificity of pulse oximetry to detect congenital heart disease in healthy newborns in rooming-in. Material and methods: The study is multicenter, prospective and cross-sectional, evaluating patients from the Regional Hospital of High Specialty "Bicentenario 2010" and the General Hospital "Dr. Norberto Treviño Zapata", in the city of Victoria Tamaulipas, in a period from march 2015 to March 2017. Pulse oximetry was determined in healthy newborns before hospital discharge. Results: 511 newborns were studied. The sensitivity detected was 88.89% and a specificity of 99.80%. Conclusion: Congenital heart disease in healthy newborns in rooming-in can be determined by pre- and post-ductal pulse oximetry.

Oximetría de pulso y toma de decisión

Introducción: La enfermad producida por el COVID-19 constituye un problema sanitario mundial. La identificación precoz de las manifestaciones clínicas y del compromiso respiratorio resulta vital para minimizar las complicaciones de la enfermedad; en este sentido, la utilización del oxímetro de pulso constituye una alternativa interesante. Objetivo: Describir las ventajas aportadas por la utilización del oxímetro de pulso en la toma de decisión de pacientes para acudir oportunamente a solicitar atención médica. Métodos: Investigación básica, diseño descriptivo y retrospectivo. Universo constituido por 348 pacientes con diagnóstico de COVID-19 y la muestra por 184 casos. Se determinó frecuencia de complicaciones e influencia del uso de oxímetro de pulso en la toma de decisiones. Se utilizó prueba no paramétrica de Odd Ratio y Fisher exacta para identificar rango de ocurrencia. Resultados: promedio de edad de 54,47 años con predominio de pacientes femeninas (60,33 %) y con comorbilidades asociadas (66,85 %). El 25,00 % de los pacientes presentó afectación respiratoria como complicación de la OVID-19. El 47,83 % de los pacientes con complicaciones uso oxímetro de pulso, aunque solo el 27,27 % acudió tempranamente a consulta, pero si en el 90,91 % la decisión de asistir a servicio de urgencia estuvo influenciada por el uso del oxímetro de punto y sus resultados. Conclusiones: La oximetría de pulso ayudó a los pacientes a tomar la decisión de acudir en busca de atención médica. Puede considerarse el monitoreo de la saturación de oxígeno como una acción positiva en torno a la sospecha clínica de afección respiratoria severa.

Introduction: The disease caused by COVID-19 constitutes a global health problem. The early identification of clinical manifestations and respiratory compromise is vital to minimize the complications of the disease; in this sense, the use of the pulse oximeter constitutes an interesting alternative. Objective: To describe the advantages provided by the use of the pulse oximeter in the decision-making of patients to go in a timely manner to request medical attention. Methods: Basic research, descriptive and retrospective design. Universe made up of 348 patients diagnosed with COVID-19 and the sample of 184 cases. The frequency of complications and the influence of the use of pulse oximeter in decision making were determined. Non-parametric Odd Ratio and Fisher's exact tests were used to identify the range of occurrence. Results: average age of 54.47 years with a predominance of female patients (60.33 %) and with associated comorbidities (66.85 %). 25.00 % of the patients presented respiratory involvement as a complication of OVID-19. 47.83 % of the patients with complications used a pulse oximeter, although only 27.27 % attended the consultation early, but in 90.91 % the decision to attend the emergency service was influenced by the use of the oximeter point and its results. Conclusions: Pulse oximetry helped patients make the decision to seek medical attention. Oxygen saturation monitoring can be considered as a positive action around the clinical suspicion of severe respiratory disease.

Análise de custo-efetividade do teste de oximetria de pulso na triagem de cardiopatias congênitas / Cost-effectiveness analysis of the pulse oximetry test in screening for congenital heart diseases

Resumo: Introdução: Trata-se de uma tese desenvolvida na Pós-graduação em Enfermagem, na Linha de Pesquisa de Políticas e Práticas de Saúde, Educação e Enfermagem, de maneira a agregar valor à atividade de monitoramento de recém-nascidos, abrangendo a esfera mundial. Seu caráter inovador e sua relevância são fortes, considerando haver cenários de não realização da Triagem de Oximetria de Pulso (TOP) ou de desenvolvimento de técnica incorreta, de maneira que poderá favorecer a ampliação de sua aplicabilidade. Aponta-se que as Cardiopatias Congênitas (CC) são as anomalias de maior incidência nos recém-nascidos, com impacto na Mortalidade Infantil. Seu diagnóstico precoce está relacionado aos melhores desfechos e à sustentabilidade do sistema de saúde. O TOP comprova a importância do impacto social do diagnóstico para a real prevenção dos desfechos mórbidos, das mortes, e dos custos em saúde. Objetivos: Determinar a acurácia do TOP para triagem de CC nas primeiras 48 horas de vida, conforme especificidade e sensibilidade; e, desenvolver análise de custo-efetividade do TOP para triagem de CC. Método: Realizada revisão sistemática de acurácia de teste diagnóstico conforme as recomendações do Jonna Briggs Institute. O protocolo está registrado na plataforma PROSPERO - CRD42021256286 - e, publicado em periódico. Foram selecionados estudos com recém-nascidos sem o diagnóstico prévio de CC, independentemente da idade gestacional ao nascimento, que realizaram o TOP entre as primeiras 48h após o nascimento, em comparação ao exame físico realizado por profissional da saúde, ou estudos que não apresentaram comparadores e sim o diagnóstico de interesse, as CC. Para a seleção dos estudos utilizaram-se bases de dados e a literatura cinzenta. A Análise de Custo-Efetividade foi realizada conforme diretriz do Ministério da Saúde e, sob a perspectiva do SUS - Sistema Único de Saúde. Os dados de custo aplicados foram os disponibilizados em bases de dados nacionais. O modelo foi de Árvore de Decisão, com horizonte temporal de um ano, considerando quatro intervenções: 1) sem o TOP; 2) TOP sem reteste; 3) TOP com 1 reteste e 4) TOP com 2 reteste. Resultados: Na Revisão Sistemática foram incluídos 29 estudos, obtendo-se população total de 388.491 recém-nascidos. O TOP demonstrou sensibilidade de 47% (IC 95%: 43% a 50%) e, especificidade de 98% (IC 95%: 98% a 98%). Em estudos que apresentavam retestes e que incluíram recém-nascidos prematuros foram realizadas análises dos subgrupos, conforme o tempo de nascimento para realização do teste entre 24-48h. Na análise de custo-efetividade evidenciou-se que não realizar o TOP culminou com a estratégia de custo mais elevado, de R$ 85,41 por paciente. Os recém-nascidos triados com TOP + dois retestes possuem uma redução de custo entre R$ 0,21 a R$ 38,78 por paciente, conforme o protocolo aplicado. Conclusão: Para o diagnóstico precoce de CC, o TOP se configura como um teste de moderada sensibilidade, alta especificidade e custo-efetivo. Apresenta relação com o diagnóstico precoce, e contribui com a referência oportuna para atenção em serviço de saúde especializado e de qualidade, desde que na esfera de gestão estejam estabelecidos os acessos. Esta pesquisa é replicável considerando o rigor metodológico, assim como seu desenvolvimento e apresentação.

Abstract: Introduction: This is a thesis developed in the Graduate Program in Nursing, in the Research Line of Health, Education and Nursing Policies and Practices, in order to add value to the activity of monitoring newborns, covering the sphere worldwide. Its innovative character is high, as well as its relevance, considering that there are scenarios of non-performance of Pulse Oximetry Screening (POS), or of development of an incorrect technique, thus favoring the expansion of its applicability. It is pointed out that Congenital Heart Defects (CHD) are the anomalies with the highest incidence in newborns, with an impact on Infant Mortality. Its early diagnosis is related to better outcomes and sustainability of the health system. The POS proves the importance of the social impact of the diagnosis, for the real prevention of morbid outcomes, deaths, and health costs. Objectives: To determine the accuracy of the POS for CHD screening in the first 48 hours of life, according to specificity and sensitivity; and, develop a costeffectiveness analysis of the POS for CHD screening. Method: A systematic review of diagnostic test accuracy was carried out according to the Jonna Briggs Institute recommendations. The protocol is registered on the PROSPERO platform - CRD42021256286 - and published in a journal. Selected studies with newborns without a previous diagnosis of CHD, regardless of gestational age at birth, that performed the POS within the first 48 hours after birth, compared to the physical examination performed by a health professional or studies that did not present comparators, and the diagnosis of interest was CHD. For the selection of studies, databases and gray literature were used. The Cost-Effectiveness Analysis was carried out according to the guidelines of the Ministry of Health and from the perspective of the UHS - Unified Health System. The cost data applied were those available in national databases. The model was a Decision Tree, with a time horizon of one year, considering four interventions: 1) without the POS; 2) POS without retest; 3) POS with 1 retest and 4) POS with 2 retests. Results: The Systematic Review included 29 studies, resulting in a total population of 388,491 newborns. The POS showed a sensitivity of 47% (CI 95%: 43% to 50%) and specificity of 98% (CI 95%: 98% to 98%). In studies that presented retests and that included premature newborns, subgroup analyzes were performed, according to the time of birth for the test to be performed between 24-48 hours. In the cost-effectiveness analysis, it was shown that not performing the POS resulted in the highest cost strategy, R$ 85.41 per patient. Newborns screened with TOP + two retests have a cost reduction of between R$ 0.21 and R$ 38.78 per patient, depending on the protocol applied. Conclusion: For the early diagnosis of CHD, the POS is configured as a test of moderate sensitivity, high specificity and cost-effective. It is related to early diagnosis, and contributes to the timely referral for care in specialized and quality health services, as long as the accesses are established in the management sphere. This research is replicable considering the clarity of its development and presentation.

Pulse oximetry test for screening congenital heart diseases: a systematic review / Prueba de oximetría de pulso para el screening de cardiopatías congénitas: revisión sistemática / Teste de oximetria de pulso para triagem de cardiopatias congênitas: revisão sistemática

ABSTRACT Objective: To determine the accuracy of the Pulse Oximetry Test (POT) in screening for Congenital Heart Diseases (CHD) in newborns in the first 48 hours of life. Method: Systematic review of diagnostic test accuracy with meta-analysis. The selection of studies was carried out in June 2021. Studies were selected with newborns, in a hospital or home environment, without a previous diagnosis of CHD, regardless of gestational age at birth, who underwent POT within the first 48 hours after birth. Registration on the PROSPERO platform - CRD42021256286. Results: Twenty-nine studies were included, totaling a population of 388,491 newborns. POT demonstrated sensitivity of 47% (95% CI: 43% to 50%) and specificity of 98% (95% CI: 98% to 98%). Subgroup analyses were carried out according to the different testing period, inclusion of retests in protocols and population of premature newborns. Conclusion: POT is a test with moderate sensitivity and high specificity. It is more effective when carried out within 24h - 48h of birth; in protocols that present retests, within two hours after the first measurement. It does not show satisfactory effectiveness for premature newborns.

RESUMEN Objetivo: Determinar la precisión de la Prueba de Oximetría de Pulso (POT) en el screening de Cardiopatías Congénitas (CC) en recién nacidos en las primeras 48 horas de vida. Método: Revisión sistemática de la precisión de las pruebas diagnósticas con metanálisis. La selección de estudios se realizó en junio de 2021. Se seleccionaron estudios con recién nacidos, en ambiente hospitalario o domiciliario, sin diagnóstico previo de CC, independientemente de la edad gestacional al nacer, a quienes se les realizó POT dentro de las primeras 48 horas después del nacimiento. Registro en la plataforma PROSPERO - CRD42021256286. Resultados: Se incluyeron 29 estudios, totalizando una población de 388.491 recién nacidos. POT demostró una sensibilidad del 47% (IC del 95%: 43% al 50%) y una especificidad del 98% (IC del 95%: 98% al 98%). Se realizaron análisis de subgrupos según los diferentes períodos de prueba, la inclusión de repruebas en los protocolos y la población de recién nacidos prematuros. Conclusión: POT es una prueba con sensibilidad moderada y especificidad alta. Es más eficaz cuando se realiza entre las 24 y 48 horas siguientes al nacimiento; en protocolos que presenten repruebas, dentro de las dos horas posteriores a la primera medición. No muestra una eficacia satisfactoria para los recién nacidos prematuros

RESUMO Objetivo: Determinar a acurácia do Teste de Oximetria de Pulso (TOP) na triagem de Cardiopatias Congênitas (CC) em recém-nascidos nas primeiras 48 horas de vida. Método: Revisão sistemática de acurácia de teste diagnóstico com metanálise. A seleção dos estudos foi realizada em junho de 2021. Foram selecionados estudos com recém-nascidos, em ambiente hospitalar ou domiciliar, sem o diagnóstico prévio de CC, independentemente da idade gestacional ao nascimento, que realizaram o TOP entre as primeiras 48h após o nascimento. Registro na plataforma PROSPERO - CRD42021256286. Resultados: Foram incluídos 29 estudos, somando uma população total de 388.491 recém-nascidos. O TOP demonstrou sensibilidade de 47% (IC 95%: 43% a 50%) e especificidade de 98% (IC 95%: 98% a 98%). Foram realizadas análises dos subgrupos conforme período de realização do teste diferente, inclusão de retestes nos protocolos e população de recém-nascidos prematuros. Conclusão: O TOP é um teste de moderada sensibilidade e alta especificidade. Apresenta maior efetividade quando realizado no intervalo entre 24h - 48h do nascimento; em protocolos que apresentem retestes, em até duas horas após a primeira medida. Não apresenta efetividade satisfatória para recém-nascidos prematuros.

Saturación de oxígeno y lactato sérico venoso-arterial del posoperatorio de cirugía cardiaca / Venous-arterial oxygen saturation and serum lactate in the postoperative period of cardiac surgery

Resumen Introducción: La saturación de oxígeno y el lactato son marcadores de hipoxia tisular, se obtienen de muestra venosa mezclada en arteria pulmonar o venosa central. Se desconoce el comportamiento simultáneo de estos parámetros en el postoperatorio de cirugía cardiaca. Objetivo: Caracterizar la saturación de oxígeno y lactato del circuito venoso-arterial del paciente postoperado de cirugía cardiaca. Métodos: Diseño transversal analítico. En pacientes consecutivos postoperados de cirugía cardiaca se obtuvieron lactato sérico y saturación de oxígeno del circuito venoso-arterial. Las variables se informaron con mediana (percentiles 25 y 75). Se analizaron con ANOVA de Kruskal-Wallis y ajuste respectivo, correlación de Spearman, el estadístico descriptivo de Bland-Altman y coeficiente de correlación intraclase (intervalo de confianza al 95%). Una p < 0.05 se consideró significativa. Resultados: Se estudiaron 244 muestras sanguíneas de 61 pacientes. Mujeres 30 (49%). Saturación de oxígeno y lactato fueron: arterial 98 (95.3, 99.4)% y 1.7 (1,1, 2.1); venosa periférica 85 (75.4, 94)% y 1.9 (1.35, 2.3); venosa central 68.8 (58.74, 70.2)% y 1.8 (1.3, 2.3); venosa central mezclada 66.8 (61.2, 73.1)% y 1.8 (1.3, 2.2), p < 0.05. El mejor coeficiente de correlación intraclase para la saturación de oxígeno fue de vena central a vena central mezclada: 0.856 (0.760, 0.914); del lactato: 0.954 (0.923, 0.972). Conclusiones: La saturación de oxígeno difiere en el circuito venoso-arterial a diferencia del lactato, donde son similares. Los mejores valores del coeficiente de correlación intraclase para el lactato y la saturación de oxígeno fueron los obtenidos en vena central y vena central mezclada.

Abstract Introduction: Oxygen saturation and lactate are markers of tissue hypoxia; they are obtained from central venous and mixed venous sample of the pulmonary artery. The simultaneous behavior of these parameters in the postoperative period of cardiac surgery is unknown. Objective: To characterize the lactate and oxygen saturation of the venous-arterial circuit of the postoperative patient from cardiac surgery. Methods: Design: Analytical cross-sectional. In consecutive patients after cardiac surgery, serum lactate and oxygen saturation of the venous-arterial circuit were obtained. The variables were reported with median (25.75 percentiles). They were analyzed with Kruskal-Wallis ANOVA and respective adjustment, Spearman correlation, the descriptive Bland-Altman statistic and intraclass correlation coefficient (95% confidence interval). A p < 0.05 was considered significant. Results: 244 blood samples from 61 patients were studied. Women 30 (49%). (Oxygen saturation) [lactate] were: arterial 98 (95.3, 99.4%) and 1.7 (1.1, 2.1); peripheral venous 85 (75.4, 94%) and [1.9 (1.35, 2.3)]; central venous 68.8 (58.74, 70.2%) and 1.8 (1.3, 2.3); mixed central venous 66.8 (61.2, 73.1%) and 1.8 (1.3, 2.2), p < 0.05. The best intraclass correlation coefficient for oxygen saturation were from central vein to mixed central vein 0.856 (0.760,0.914); and lactate: 0.954 (0.923, 0.972). Conclusions: The oxygen saturation differs in the venous-arterial circuit unlike lactate where they are similar. The best values of the intraclass correlation coefficient for lactate and oxygen saturation were those obtained in central vein and mixed central vein.

Venous-arterial oxygen saturation and serum lactate in the postoperative period of cardiac surgery.

INTRODUCTION: Oxygen saturation and lactate are markers of tissue hypoxia; they are obtained from central venous and mixed venous sample of the pulmonary artery. The simultaneous behavior of these parameters in the postoperative period of cardiac surgery is unknown. OBJECTIVE: To characterize the lactate and oxygen saturation of the venous-arterial circuit of the postoperative patient from cardiac surgery. METHODS: Design: Analytical cross-sectional. In consecutive patients after cardiac surgery, serum lactate and oxygen saturation of the venous-arterial circuit were obtained. The variables were reported with median (25.75 percentiles). They were analyzed with Kruskal-Wallis ANOVA and respective adjustment, Spearman correlation, the descriptive Bland-Altman statistic and intraclass correlation coefficient (95% confidence interval). A p < 0.05 was considered significant. RESULTS: 244 blood samples from 61 patients were studied. Women 30 (49%). (Oxygen saturation) [lactate] were: arterial 98 (95.3, 99.4%) and 1.7 (1.1, 2.1); peripheral venous 85 (75.4, 94%) and [1.9 (1.35, 2.3)]; central venous 68.8 (58.74, 70.2%) and 1.8 (1.3, 2.3); mixed central venous 66.8 (61.2, 73.1%) and 1.8 (1.3, 2.2), p < 0.05. The best intraclass correlation coefficient for oxygen saturation were from central vein to mixed central vein 0.856 (0.760,0.914); and lactate: 0.954 (0.923, 0.972). CONCLUSIONS: The oxygen saturation differs in the venous-arterial circuit unlike lactate where they are similar. The best values of the intraclass correlation coefficient for lactate and oxygen saturation were those obtained in central vein and mixed central vein.

INTRODUCCIÓN: La saturación de oxígeno y el lactato son marcadores de hipoxia tisular, se obtienen de muestra venosa mezclada en arteria pulmonar o venosa central. Se desconoce el comportamiento simultáneo de estos parámetros en el postoperatorio de cirugía cardiaca. OBJETIVO: Caracterizar la saturación de oxígeno y lactato del circuito venoso-arterial del paciente postoperado de cirugía cardiaca. MÉTODOS: Diseño transversal analítico. En pacientes consecutivos postoperados de cirugía cardiaca se obtuvieron lactato sérico y saturación de oxígeno del circuito venoso-arterial. Las variables se informaron con mediana (percentiles 25 y 75). Se analizaron con ANOVA de Kruskal-Wallis y ajuste respectivo, correlación de Spearman, el estadístico descriptivo de Bland-Altman y coeficiente de correlación intraclase (intervalo de confianza al 95%). Una p < 0.05 se consideró significativa. RESULTADOS: Se estudiaron 244 muestras sanguíneas de 61 pacientes. Mujeres 30 (49%). Saturación de oxígeno y lactato fueron: arterial 98 (95.3, 99.4)% y 1.7 (1,1, 2.1); venosa periférica 85 (75.4, 94)% y 1.9 (1.35, 2.3); venosa central 68.8 (58.74, 70.2)% y 1.8 (1.3, 2.3); venosa central mezclada 66.8 (61.2, 73.1)% y 1.8 (1.3, 2.2), p < 0.05. El mejor coeficiente de correlación intraclase para la saturación de oxígeno fue de vena central a vena central mezclada: 0.856 (0.760, 0.914); del lactato: 0.954 (0.923, 0.972). CONCLUSIONES: La saturación de oxígeno difiere en el circuito venoso-arterial a diferencia del lactato, donde son similares. Los mejores valores del coeficiente de correlación intraclase para el lactato y la saturación de oxígeno fueron los obtenidos en vena central y vena central mezclada.

Factores de riesgo de ingreso a unidad de cuidados intensivos o mortalidad en adultos hospitalizados por COVID-19 en altura / Risk factors for intensive care unit admission or mortality in adults hospitalized for COVID-19 at high altitude

RESUMEN Objetivo. Determinar los factores de riesgo de ingreso a unidad de cuidados intensivos (UCI) o mortalidad en pacientes hospitalizados por COVID-19 en un hospital de Puno, Perú. Materiales y métodos. Estudio de cohorte retrospectivo en adultos hospitalizados entre abril y diciembre del 2020. Se evaluaron características sociodemográficas, funciones vitales, comorbilidades, tratamiento recibido y su asociación con el ingreso a UCI o mortalidad (desenlace adverso). Se utilizó regresión de Poisson con varianza robusta para calcular riesgos relativos (RR) crudos y ajustados con sus intervalos de confianza al 95% (IC95%). Resultados. Se analizaron 348 historias clínicas. La mediana de edad en años fue 42,5 (RIC: 30,0; 58,0); el 38,2% fueron varones, y el 35,3% falleció o ingresó a UCI. Los que ingresaron con una saturación de oxígeno ≤ 75%, tuvieron 2,79 veces la probabilidad de tener el desenlace adverso (p < 0,001), en comparación con los que ingresaron con una saturación ≥ 85%; los que ingresaron con un valor entre 75-79% tuvieron 2,92 veces la probabilidad de tener el desenlace adverso (p < 0,001); asimismo, los que ingresaron con saturación entre 80-84% tuvieron 1,70 veces la probabilidad de presentar el desenlace adverso; sin embargo la diferencia no fue estadísticamente significativa (p=0,066). Además, hubo mayor riesgo de desenlace adverso en pacientes de sexo masculino RR= 1,75 (p<0,001), edad > 40 años RR 3,5 (p=0,001), taquipnea RR=1,66 (p=0,010), o con diabetes, RR = 1,53 (p=0,011). Conclusiones . Los factores de riesgo para ingresar a UCI o mortalidad por COVID-19 fueron el sexo masculino, edad mayor de 40 años, saturación baja, diabetes y taquipnea.

ABSTRACT Objective. To determine the risk factors for admission to the intensive care unit (ICU) or mortality in patients hospitalized for COVID-19 in a hospital in Puno, Peru. Materials and methods. Retrospective cohort study in adults hospitalized between April and December 2020. We evaluated Sociodemographic characteristics, vital functions, comorbidities, treatment received and its association with admission to ICU or mortality (adverse outcome). Poisson regression with robust variance was used to calculate crude and adjusted relative risks (RR) with their 95% confidence intervals (95%CI). Results. A total of 348 medical records were analyzed. The median age in years was 42.5 (IQR: 30.0; 58.0); 38.2% were male, and 35.3% died or were admitted to the ICU. Those admitted with an oxygen saturation ≤ 75% were 2.79 times more likely to have the adverse outcome (p < 0.001), compared to those admitted with a saturation ≥ 85%; those admitted with a value between 75-79% were 2.92 times more likely to have the adverse outcome (p < 0.001); likewise, those admitted with saturation between 80-84% were 1.70 times more likely to have the adverse outcome; however, the difference was not statistically significant (p=0.066). In addition, male patients, RR= 1.75 (p<0.001); those aged > 40 years, RR 3.5 (p=0.001); those with tachypnea, RR=1.66 (p=0.010); or with diabetes, RR = 1.53 (p=0.011) had higher risk of presenting the adverse outcome. Conclusions. The risk factors for ICU admission or mortality due to COVID-19 were male sex, age over 40 years, low saturation, diabetes and tachypnea.

Utilidad del monitoreo hemodinámico con espectroscopia cercana infrarroja en pediatría / Use of near infrared spectroscopy for hemodynamic monitoring in pediatrics

La espectroscopia cercana infrarroja (NIRS, por su sigla en inglés), es una técnica óptica no invasiva y no ionizante utilizada para medir la oxigenación tisular regional a través de sensores transcutáneos. En los últimos años, han aumentado de manera exponencial las publicaciones sobre este tema; esto refleja el creciente interés de investigadores y clínicos por la utilización de esta nueva tecnología y los beneficios que podría ofrecerles a los pacientes pediátricos. El objetivo de esta revisión es dar a conocer el funcionamiento y las posibles aplicaciones de la saturación regional medida por NIRS, así como los desafíos en el futuro.

Near infrared spectroscopy (NIRS) is a non-invasive optical technique for the evaluation of regional tissue oxygenation using transcutaneous detectors. In recent years, publications about this topic have increased exponentially; this reflects the growing interest among investigators and clinicians about this new technology and its potential benefits for pediatric patients. The objective of this review is to know the functioning and potential uses of regional saturation measured by NIRS and establish future challenges.

Justificativa e limitações da SpO2/FiO2 como possível substituta da PaO2/FiO2 em diferentes cenários pré-clínicos e clínicos / Rationale and limitations of the SpO2/FiO2 as a possible substitute for PaO2/FiO2 in different preclinical and clinical scenarios

RESUMO Embora a PaO2/FiO2 derivada da gasometria arterial continue sendo o padrão-ouro do diagnóstico de insuficiência respiratória aguda, a SpO2/FiO2 tem sido investigada como potencial substituta. Esta revisão narrativa apresenta o estado da literatura pré-clínica e clínica sobre a SpO2/FiO2 como possível substituta da PaO2/FiO2 e para uso como marcador diagnóstico e prognóstico; ainda, é fornecida uma visão geral da oximetria de pulso e suas limitações, além da avaliação da utilidade da SpO2/ FiO2 como substituta da PaO2/FiO2 em pacientes com COVID-19. Ao todo, foram encontrados 49 estudos comparando SpO2/FiO2 e PaO2/ FiO2 com base em uma estratégia de pesquisa mínima. A maioria dos estudos foi realizada em recémnascidos, alguns foram realizados em adultos com síndrome do desconforto respiratório agudo, e outros foram realizados em outros cenários clínicos (incluindo poucos em pacientes com COVID-19). Há certa evidência de que os critérios de SpO2/FiO2 podem substituir a PaO2/FiO2 em diferentes cenários clínicos. Isso é reforçado pelo fato de que devem ser evitados procedimentos invasivos desnecessários em pacientes com insuficiência respiratória aguda. É inegável que os oxímetros de pulso estão cada vez mais difundidos e podem proporcionar um monitoramento sem custos. Portanto, substituir a PaO2/FiO2 pela SpO2/FiO2 pode permitir que instalações com recursos limitados diagnostiquem a insuficiência respiratória aguda de maneira objetiva.

ABSTRACT Although the PaO 2/FiO 2 derived from arterial blood gas analysis remains the gold standard for the diagnosis of acute respiratory failure, the SpO2/FiO2 has been investigated as a potential substitute. The current narrative review presents the state of the preclinical and clinical literature on the SpO2/FiO2 as a possible substitute for PaO2/FiO2 and for use as a diagnostic and prognostic marker; provides an overview of pulse oximetry and its limitations, and assesses the utility of SpO2/ FiO2 as a surrogate for PaO2/FiO2 in COVID-19 patients. Overall, 49 studies comparing SpO2/FiO2 and PaO2/FiO2 were found according to a minimal search strategy. Most were conducted on neonates, some were conducted on adults with acute respiratory distress syndrome, and a few were conducted in other clinical scenarios (including a very few on COVID-19 patients). There is some evidence that the SpO2/ FiO2 criteria can be a surrogate for PaO2/FiO2 in different clinical scenarios. This is reinforced by the fact that unnecessary invasive procedures should be avoided in patients with acute respiratory failure. It is undeniable that pulse oximeters are becoming increasingly widespread and can provide costless monitoring. Hence, replacing PaO2/FiO2 with SpO2/FiO2may allow resourcelimited facilities to objectively diagnose acute respiratory failure.

Implementación del método simplificado Apnealink™Air® por médicos de atención primaria para el diagnóstico del síndrome de apnea-hipopnea durante el sueño / Implementation of simplified diagnostic method Apnealink™Air® to diagnose sleep apnea by general practioners of primary care

Objetivo: Valorar la interpretación de ApnealinkTM® (AL) por médicos de atención primaria (MAP), y la alcanzada mediante poligrafía respiratoria (PGR) en la Unidad de Sueño Hospitalaria (USH) en pacientes con alta probabilidad de síndrome de apnea e hipopnea del sueño (SAHS). Métodos: Se recogen aleatoriamente, durante tres meses, pacientes seleccionados en USH para estudio mediante PGR, con elevada probabilidad de SAHS que aceptaron repetir estudio mediante AL. La USH corregía la PGR según normativa SEPAR; el MAP corregía el AL y planteaba manejo. Se analizaron los pacientes con estudios válidos(tiempo registro ≥ 240 min) para ambos dispositivos, comparándose resultados. Se consideró el estudio AL automático y corregido, considerando un índice de desaturación de oxihemoglobina (ODI) al 4% (ODI 4%), (AL 4%) y al 3% (ODI 3%), (AL 3%). Cuando ODI 4% era ≥ 12/h, se estableció diagnóstico SAHS moderado/grave, suponiendo un IAH ≥ 15/h. Para interpretar AL con ODI 3% y tratamiento, se siguieron criterios SEPAR. Se compararon los resultados para las mismas variables del AL frente a PGR. Resultados: Se incluyeron 43 pacientes válidos para AL, 45 para PGR y 41 válidos para ambos estudios. El estudio AL 4% mostró 27 (62,8%) positivos (OR 5,5, p < 0,05), que el AL 3% corroboró con IAH ≥ 15/h. La PGR detectó 19 (42,2%) con IAH ≥ 15/h; el AL 3% detectó 31 (72%). El análisis del AL 4% y AL 3% comparado con PGR no mostró diferencias de diagnóstico o manejo. Se compararon los resultados para las mismas variables del AL frente a PGR.Conclusiones: Existe equivalencia entre las decisiones del MAP y la USH. El AL sería un buen método diagnóstico de SAHS en atención primaria, en pacientes seleccionados con alta probabilidad de SAHS (AU)

Objectives: To assess diagnosis and therapeutic decisions-making by General Practitioners (GP) using ApnealinkTM® (AL) in patients with high suspicion of obstructive sleep apnea (OSA), in comparison with conclusions of Hospital Sleep Unit (HSU) specialists based on home respiratory polygraphy (PGR) results. Methods: This study involved patients previously selected by HSU for sleep testing by PGR. After it, patients were offered to complete AL test. PGR was checked at HSU; AL was checked by hemoglobin desaturation index of 4% (4% ODI), (4% AL) and 3% (3% ODI) patients with positive test to proceed with CPAP; and those with negative test for further testing. Automatically adjusted 4% AL, was considered valid as it was demonstrated to be equivalent to manual AL. Results were compared by automatically adjusted 3%AL against PGR results. Results: 48 patients were collected. 43 had AL valid test, 45 had PGR valid study, and 41 had both valid test. 27 patients (62,8%) had positive 4% AL (OR 5,51, p < 0,05), that showed AHI ≥ 15/h at 3% AL test; and 19 patients (42,2%) had a positive PGR test. 31 (72%) patients had a positive 3% AL. AL had shown to be a good screening method of SAHS. Conclusions: There is equivalence between the decisions of GP and HSU. AL is a good diagnostic tool and screening method for OSA in primary care when it is used in patients with high suspicion of moderate-severe OSA (AU)

Acurácia da oximetria de pulso para triagem das cardiopatias congênitas: protocolo de revisão sistemática / Accuracy of pulse oximetry for screening congenital heart disease: systematic review protocol

OBJETIVO: determinar a acurácia da oximetria de pulso para triagem de cardiopatias congênitas em recém-nascidos. MÉTODO: trata-se de uma Revisão Sistemática de acurácia diagnóstica que considerará recém-nascidos prematuros, termo e pós-termo, sem diagnóstico prévio de cardiopatia congênita, nascidos em ambiente hospitalar ou domiciliar. A busca será realizada nas bases de dados MEDLINE Complete (PubMed), CINAHL Complete, Embase, Scopus, Google Scholar, ProQuest Central e Trove. Sem delimitação de idioma ou período de publicação. As referências identificadas serão gerenciadas por meio do EndNote e, as duplicações excluídas. A seleção ocorrerá por dois revisores independentes. Os estudos serão avaliados criticamente por meio de uma lista de verificação para estudos de acurácia de testes diagnósticos. Detalhes sobre os testes de índice, populações, métodos de estudo e resultados significativos para a revisão, serão extraídos. Sempre que possível, a sensibilidade e a especificidade serão agrupadas em meta-análise estatística bivariada. Número de registro na plataforma PROSPERO: CRD42021256286

OBJECTIVE: to determine the accuracy of pulse oximetry for screening congenital heart defects in newborns. METHOD: this is a Systematic Review of diagnostic accuracy that will consider premature, term and post-term newborns, without previous diagnosis of congenital heart disease, born in a hospital or home environment. The search will be performed in MEDLINE Complete (PubMed), CINAHL Complete, Embase, Scopus, Google Scholar, ProQuest Central and Trove databases. No delimitation of language or period of publication. Identified references will be managed through EndNote, and duplicates will be excluded. The selection will take place by two independent reviewers. Studies will be critically evaluated using a checklist for diagnostic test accuracy studies. Details on index tests, populations, study methods, and significant results for the review will be extracted. Whenever possible, sensitivity and specificity will be pooled in bivariate statistical meta-analysis. Registration number on the PROSPERO platform: CRD42021256286

[Implementation of simplified diagnostic method Apnealink™Air® to diagnose sleep apnea by general practioners of primary care]. / Implementación del método simplificado Apnealink™Air® por médicos de atención primaria para el diagnóstico del síndrome de apnea-hipopnea durante el sueño.

OBJECTIVES: To assess diagnosis and therapeutic decisions-making by General Practitioners (GP) using ApnealinkTM® (AL) in patients with high suspicion of obstructive sleep apnea (OSA), in comparison with conclusions of Hospital Sleep Unit (HSU) specialists based on home respiratory polygraphy (PGR) results. METHODS: This study involved patients previously selected by HSU for sleep testing by PGR. After it, patients were offered to complete AL test. PGR was checked at HSU; AL was checked by hemoglobin desaturation index of 4% (4% ODI), (4% AL) and 3% (3% ODI) patients with positive test to proceed with CPAP; and those with negative test for further testing. Automatically adjusted 4% AL, was considered valid as it was demonstrated to be equivalent to manual AL. Results were compared by automatically adjusted 3%AL against PGR results. RESULTS: 48 patients were collected. 43 had AL valid test, 45 had PGR valid study, and 41 had both valid test. 27 patients (62,8%) had positive 4% AL (OR 5,51, p < 0,05), that showed AHI ≥ 15/h at 3% AL test; and 19 patients (42,2%) had a positive PGR test. 31 (72%) patients had a positive 3% AL. AL had shown to be a good screening method of SAHS. CONCLUSIONS: There is equivalence between the decisions of GP and HSU. AL is a good diagnostic tool and screening method for OSA in primary care when it is used in patients with high suspicion of moderate-severe OSA.

Respuesta fisiológica con la técnica Masaje al Bebe Canguro, en un programa ambulatorio de Bogotá / Physiological response with the Kangaroo Baby Massage technique, in an outpatient program in Bogotá

La presente investigación tuvo como fin medir la respuesta fisiológica (frecuencia cardiaca, saturación de oxígeno y temperatura) del niño(a) prematuro(a) o con bajo peso al nacer, con la aplicación de la técnica "Masaje al Bebé Canguro-MBC", con el animo de demostrar la seguridad de esta técnica en estos parámetros fisiológicos en el recién nacido. Por lo tanto, se efectuó un estudio cuantitativo, con diseño preexperimental de preprueba/posprueba con un solo grupo entre enero y junio del 2019 en un Programa Canguro Ambulatorio de Bogotá. Resultados: Se acogieron un total de 63 bebés canguro. Se realizó análisis estadístico con SPSS, descriptivo e inferencial con prueba de normalidad de Kolmogorov-Smirnov y métodos paramétricas t-student y no paramétricas Friedman. La frecuencia cardiaca presentó un aumento en el índice siendo la media inicial de 147.22±7.17 lpm y de 147.54±7.96 lpm después de la intervención, aunque este no fue significativo (p=0.603). Por su parte, la oximetría presentó un aumento al ser la mediana inicial de 92% y después del MBC 93% variación que fue significativa (p=0.000). Finalmente la temperatura inicial y después presentó una mediana de 36.6°C con un índice inicial de 36.59±0.169°C y de 36.62±0.163°C después de la intervención, aunque este no fue significativo (p=0.182). Se realizó un modelo de regresión ajustado a las variables fisiológicas no encontrandose factores predictores estadísticamente significativos. Desde el modelo de Callista Roy el MBC tuvo una respuesta adaptativa eficaz. Conclusiones: La técnica de MBC tiene un efecto favorable y seguro en la frecuencia cardiaca, saturación de oxigeno y temperatura sin alteración de los parámetros normales con buena adaptación según el modelo de Callista Roy.

The purpose of this research was to measure the physiological response (heart rate, oxygen saturation and temperature) of the premature or low birth weight child, with the application of the "Kangaroo Baby MassageKBM" technique. , with the aim of demonstrating the safety of this technique in these physiological parameters in the newborn. Therefore, a quantitative study, with a pre-experimental pre-test/post-test design, was carried out with a single group between January and June 2019 in a Kangaroo Outpatient Program in Bogotá. Results: A total of 63 kangaroo babies were received. Statistical analysis was performed with SPSS, descriptive and inferential with the Kolmogorov-Smirnov normality test and parametric tstudent and non-parametric Friedman methods. The heart rate presented an increase in the index, the initial mean being 147.22±7.17 bpm and 147.54±7.96 bpm after the intervention, although this was not significant (p=0.603). On the other hand, oximetry showed an increase as the initial median was 92% and after the KBM was 93%, a variation that was significant (p=0.000). Finally, the temperature presented initial and after median 36.6°C an increase with an initial index of 36.59±0.169°C and 36.62±0.163°C after the intervention, although this was not significant (p=0.182). A regression model adjusted to the physiological variables was performed, and no statistically significant predictive factors were found. From Callista Roy's model, the KBM had an effective adaptive response. Conclusions: The KBM technique has a favorable and safe effect on heart rate, oxygen saturation and temperature without alteration of normal parameters with good adaptation according to the Callista Roy model.

Neuromonitoreo no invasivo en unidades de cuidados intensivos en Colombia / Non-invasive neuromonitoring in intensive care units in Colombia

Resumen | El monitoreo electroencefalográfico no invasivo continuo es una técnica indispensable en los pacientes neurológicos críticos, ya que muestra de forma directa e indirecta su actividad cerebral y permite relacionar los hallazgos con su estado clínico. Es muy sensible, aunque su especificidad es menor, por lo que puede demostrar la alteración del estado de conciencia sin aclarar su etiología. El uso del registro electroencefalográfico continuo en pacientes con alteraciones del estado de conciencia, convulsiones, o estado epiléptico convulsivo y no convulsivo, se ha incrementado en los últimos años porque permite obtener información en tiempo real de la función cerebral y de los cambios en el tiempo; además, facilita la detección de crisis epilépticas subclínicas y electrográficas, estas últimas de gran importancia, ya que no presentan correlación clínica. Los hallazgos del monitoreo permiten modificar el tratamiento farmacológico y anticonvulsivo, y constituyen una gran ventaja para el médico tratante en la toma de decisiones oportunas que redunden en la mejoría del pronóstico del paciente.

Abstract | Continuous non-invasive electroencephalographic monitoring is an essential technique for critical care patients as it shows directly and indirectly the patient's brain activity and makes it possible to relate it with findings in the clinical status. It is highly sensitive, although its specificity is lower, so they can show alterations of the state of consciousness without clarifying the etiology. Continuous electroencephalographic recording in patients with altered levels of consciousness, seizures, and convulsive and non-convulsive status epilepticus has been increasing in recent years as real-time feedback of the cerebral function shows evolution changes and allows for the identification of electric and subclinical epileptic seizures that are highly important since they do not have clinical correlations. These findings in electroencephalographic monitoring also help to modify pharmacological and antiseizure treatments. For practitioners, they are advantageous when making timely decisions that impact the prognosis of the patient.

Tamizaje con oximetría de pulso en el diagnóstico de cardiopatías congénitas críticas en recién nacidos / Pulse oximetry screening in the diagnosis of critical congenital heart diseases in newborns

Resumen Objetivo Describir los resultados del tamizaje con oximetría de pulso en el diagnóstico de cardiopatías congénitas críticas en recién nacidos a término y asintomáticos, en una institución de salud de la ciudad de Cúcuta, durante el año 2018. Método: Se llevó a cabo un estudio de tipo descriptivo, de corte transversal, con recolección de información de manera prospectiva, en el cual se tomó oximetría de pulso a 438 recién nacidos a término, asintomáticos, que se encontraban en el quinto piso del Hospital Universitario Erasmo Meoz entre las 18 y las 48 horas de vida. Resultados El tamizaje fue negativo en un 99.1% de los recién nacidos y positivo en el 0.91%; este porcentaje corresponde a cuatro pacientes a quienes se les solicitó valoración por cardiología pediátrica y ecocardiograma transtorácico, de los cuales uno de ellos fue diagnosticado con transposición de grandes arterias y otro con hipertensión pulmonar moderada, y los dos pacientes restantes fueron sanos y dados de alta. Conclusiones La oximetría de pulso como prueba de tamizaje entre las 18 y las 48 horas de vida fue fundamental para diagnosticar una transposición de grandes arterias en un recién nacido asintomático, permitiéndole un tratamiento oportuno para una patología que representa un gran impacto en la morbimortalidad neonatal. Además, permitió el diagnóstico de hipertensión pulmonar en uno de los neonatos.

Abstract Objective To describe the results of pulse oximetry screening in the diagnosis of critical congenital heart diseases in newborns, in a health institution in Cucuta city, during 2018. Method A descriptive, cross-sectional study was conducted, with information collection prospectively, in which pulse oximetry was taken of 438 asymptomatic newborns at term who are on the fifth floor of the Erasmo Meoz University Hospital between 18 and 48 hours of life. Results Screening was negative in 99.1% of newborns and positive in 0.91%, this percentage corresponds to 4 patients who were asked for evaluation by pediatric cardiology and transthoracic echocardiogram; one of them was diagnosed with transposition of the great arteries, other with moderate pulmonary hypertension, the remaining two patients were healthy and discharged. Conclusions Pulse oximetry as a screening test between 18 and 48 hours of life was essential to diagnose a transposition of the great arteries in an asymptomatic newborn, allowing timely treatment for a pathology that represents a great impact on neonatal morbidity and mortality. Additionally, it allowed the diagnosis of pulmonary hypertension in one of the neonates.