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Introduction. Alterations in the quality and duration of sleep are risk factors for the development of arterial hypertension in Eastern countries. However, in Latin America there are few studies researching this association. Objective. To analyze the association between the quality and duration of sleep and the rate of arterial hypertension in a Colombian population. Materials and methods. An observational, longitudinal, prospective and analytical study nested in the INEFAC population-based cohort, was conducted with participants over 18 years of age from Bucaramanga (Colombia). Sleep quality was assessed using the Pittsburgh Sleep Quality Index. Sleep duration was assessed using standardized questions. Multivariate analysis was performed with logistic regression models adjusted for possible confounding variables. Results. A total of 1,306 non-hypertensive participants with a mean age of 40 ± 12 years were included. In this population, 92.8% had one or more sleep issues. 45.15% slept 6 hours or less and 28.6% slept 8 hours or more. Multivariate analysis showed a higher risk of hypertension in participants with diabetes (OR = 5.27; 95% CI: 2.27-12.26), obesity (OR = 2.81; 95% CI: 1.11-7.13), active smoking (OR = 2.02; 95% CI: 1.01-4.04) and higher socioeconomic level (OR = 4.94; 95% CI: 1.59-15.38 for level 4), but no higher risk was found in participants with poor sleep quality or short sleep duration. Conclusions. No association was found between the duration or quality of sleep and the rate of arterial hypertension in the Colombian population. More studies are required in this population to reach definitive conclusions.

Introducción: Las alteraciones en la calidad y la duración del sueño son factores de riesgo para el desarrollo de hipertensión arterial sistémica en los países orientales. Sin embargo, hay pocos estudios de los países de Latinoamérica para investigar esta asociación. OBJETIVO: Analizar la asociación entre la calidad y la duración del sueño, y la incidencia de hipertensión arterial sistémica en población colombiana. Materiales y métodos. Se llevó a cabo un estudio observacional, longitudinal, prospectivo y analítico, anidado en la cohorte de base poblacional INEFAC, desarrollado con participantes mayores de 18 años de Bucaramanga (Colombia). El sueño se evaluó mediante el índice de calidad del sueño de Pittsburgh y, su duración, mediante preguntas estandarizadas. Se realizó un análisis multivariado con modelos de regresión logística ajustados por las posibles variables de confusión. RESULTADOS: Se incluyeron 1.306 participantes no hipertensos con edad media de 40 ± 12 años. El 92,8 % de la población presentaba algún problema del sueño, el 45,15 % dormía 6 horas o menos y el 28,6 % dormía 8 horas o más. El análisis multivariado mostró un mayor riesgo de hipertensión en los participantes con diabetes (OR = 5,27) (IC95 %: 2,27-12,26), obesidad (OR = 2,81) (IC95 %: 1,11-7,13), tabaquismo activo (OR = 2,02) (IC95 %: 1,01-4,04) y mayor estrato socioeconómico (OR = 4,94) (IC95 %: 1,59-15,38 para estrato 4), pero no se encontró un mayor riesgo en los participantes con mala calidad o poca duración del sueño. CONCLUSIONES: No se demostró asociación alguna entre la duración o la calidad del sueño y la incidencia de hipertensión arterial sistémica en población colombiana. Se requieren más estudios en esta población para llegar a conclusiones definitivas.

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The hypoxic chemoreflex and the arterial baroreflex are implicated in the ventilatory response to exercise. It is well known that long-term exercise training increases parasympathetic and decreases sympathetic tone, both processes influenced by the arterial baroreflex and hypoxic chemoreflex function. Hypobaric hypoxia (i.e., high altitude [HA]) markedly reduces exercise capacity associated with autonomic reflexes. Indeed, a reduced exercise capacity has been found, paralleled by a baroreflex-related parasympathetic withdrawal and a pronounced chemoreflex potentiation. Additionally, it is well known that the baroreflex and chemoreflex interact, and during activation by hypoxia, the chemoreflex is predominant over the baroreflex. Thus, the baroreflex function impairment may likely facilitate the exercise deterioration through the reduction of parasympathetic tone following acute HA exposure, secondary to the chemoreflex activation. Therefore, the main goal of this review is to describe the main physiological mechanisms controlling baro- and chemoreflex function and their role in exercise capacity during HA exposure.

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INTRODUCTION: Propofol and midazolam are the main options for moderate sedation in clinical practice. In addition, these drugs are used to reduce intracranial pressure in cases of intracranial hypertension, and their use in these situations is guided by limited evidence. OBJECTIVE: To compare the effects of propofol and midazolam on intracranial pressure wave morphology in moderate sedation in patients undergoing upper digestive endoscopy. METHODS: Sixty patients were included in this study, being divided into two groups, propofol and midazolam group. Intracranial pressure was monitored during and after upper digestive endoscopy, using non-invasive monitoring equipment developed by the company Brain4care. Arterial pressure was measured before and after the exam. RESULTS: The propofol group had lower intracranial pressure (p=0.037) during moderate sedation compared to intracranial pressure after endoscopy and a significant decrease in systolic (p=0.0001) and diastolic pressure (p=0.001) after sedation. Midazolam, on the other hand, reduced systolic pressure (p=0.001), but didn't change the other parameters after the procedure. There wasn't a significant difference between the propofol and midazolam groups. CONCLUSION: There was no significant difference between the groups studied, however, analyses within the propofol and midazolam groups indicate that propofol, but not midazolam, causes changes in intracranial pressure in moderate sedation.

INTRODUÇÃO: O propofol e o midazolam são as principais opções para sedação moderada na prática clínica. Além disso, esses medicamentos são usados para reduzir a pressão intracraniana em casos de hipertensão intracraniana e seu uso nessas situações é orientado por evidências limitadas. OBJETIVO: Comparar os efeitos do propofol e do midazolam na morfologia da curva de pressão intracraniana na sedação moderada em pacientes submetidos à endoscopia digestiva alta. MÉTODOS: Sessenta pacientes foram incluídos nesse estudo, sendo divididos em dois grupos: propofol e midazolam. A pressão intracraniana foi monitorada durante e após a endoscopia digestiva alta, usando um equipamento de monitoramento não invasivo desenvolvido pela empresa Brain4care. A pressão arterial foi medida antes e depois do exame. RESULTADOS: O grupo do propofol apresentou pressão intracraniana mais baixa (p=0,037) durante a sedação moderada em comparação com a pressão intracraniana após a endoscopia, e uma diminuição significativa na pressão sistólica (p=0,0001) e diastólica (p=0,001) após a sedação. O midazolam, por outro lado, reduziu a pressão sistólica (p=0,001), mas não alterou os outros parâmetros após o procedimento. Não houve diferença significativa entre os grupos propofol e midazolam. CONCLUSÃO: Não houve diferença significativa entre os grupos estudados; entretanto, as análises dentro dos grupos de propofol e midazolam indicam que apenas o propofol causa alterações na pressão intracraniana em sedação moderada.

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For the ischemic preconditioning (IPC) intervention, the accuracy of the protocol is paramount for mediating its possible ergogenic effects. However, the lack of standardization and widespread use of arbitrary cuff pressures (ranging from 130 to >300 mmHg) have been predominantly observed, potentially affecting the results and compromising the reproducibility of findings. Thus, the purpose of this study was to determine an appropriate cuff pressure during IPC. Seventeen healthy male participants were enrolled in the study. Anthropometric measurements were initially conducted, followed by systolic and diastolic blood pressure measurements. Subsequently, we determined the individual thigh occlusion pressure (TOP) for the right leg using a hand-held Doppler device. Based on these findings, we developed an estimation equation for TOP, considering the current brachial systolic blood pressure (SBP) values. We then conducted a retrospective analysis of its capacity to mediate occlusion. We observed the ability to estimate TOP using the equation (p = 0.01; ES: 0.86), presenting ~6% superiority in absolute values for occlusion compared to direct measurement (TOP equation: 169.9 ± 9.1; TOP direct measured: 161.2 ± 11.1). However, TOP estimation was insufficient to produce complete occlusion in two out of 17 subjects (11.8%). In conclusion, the estimation of TOP incorporating SBP values may offer a valid and practical means for cuff administration during IPC protocols with potential to minimize adverse effects and maximize its positive effects.

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INTRODUCTION: A lower ability to buffer pulse pressure (PP) in the face of increasing mean arterial pressure (MAP) may underlie the disproportionate increase in systolic blood pressure (SBP) in women from young adulthood through middle-aged relative to men. AIM: To evaluate the contribution of MAP to the change in PP and pressure wave contour in men and women from young adulthood to middle age. METHODS: Central pressure waveform was obtained from radial artery applanation tonometry in 312 hypertensive patients between 16 to 49 years (134 women, mean age 35 ± 9 years), 185 of whom were on antihypertensive treatment. RESULTS: Higher MAP levels (≥ 100 mmHg) were significantly associated with higher brachial and central SBP (P < 0.001), PP (P < 0.001), incident wave (P = 0.005), AP (P < 0.001), and PWV (P < 0.001) compared to lower MAP levels. The relationship between MAP and brachial PP (P < 0.001), central PP (P < 0.001), incident wave (P < 0.001), and AP (P < 0.01), but not PWV, strengthens with age. The age-related increase in the contribution of MAP to brachial PP (P < 0.001), central PP (P < 0.001), and incident wave (P < 0.001) was more prominent in women than in men beginning in the fourth decade. In multiple regression analyses, MAP remained a significantly stronger predictor of central PP and incident wave in women than in men, independent of age, heart rate, and antihypertensive treatment. In turn, age remained a significantly stronger predictor of central PP and incident wave in women than in men, independent of MAP, heart rate, and antihypertensive treatment. CONCLUSIONS: Women of reproductive age showed a steeper increase in PP with increasing MAP, despite comparable increases in arterial stiffness in both sexes. The difference was driven by a greater contribution of MAP to the forward component of the pressure wave in women.

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RESUMEN Introducción: Los cambios realizados por la pandemia de COVID-19 en las actividades de los adolescentes han afectado los aspectos recreativos debido a la limitación de contacto para evitar la propagación del virus. Esto ha contribuido a aumentar los indicadores de sobrepeso y obesidad y podría tener un impacto en las cifras de presión arterial. Objetivo: Determinar el grado de asociación entre el Índice de Masa Corporal (IMC) y la presión arterial sistémica en adolescentes. Métodos: La medición de la presión arterial sistémica se realizó utilizando el monitoreo de presión ambulatoria continua durante 24 horas (MAPA). La muestra consistió en 42 estudiantes de secundaria con características geográficas urbanas similares en México. Todos los participantes fueron evaluados antropométricamente para identificar características notables del grupo. Se evaluó la correlación a través de la prueba Rho de Spearman. Resultados: De los 42 participantes incluidos, el 28,5% mostró obesidad, el 21,45% presentó sobrepeso y ningún paciente tenía hipertensión. Sin embargo, el 23,8% mostró prehipertensión. Se evidenció una correlación significativa del IMC con los valores la presión arterial sistólica y diastólica de 0,390 y 0,382, respectivamente (valor de p: 0,013 y 0,015; respectivamente). Conclusión: El IMC se asoció significativamente con las cifras de presión arterial sistólica y diastólica en adolescentes de un área urbana de México.

ABSTRACT Introduction: The changes brought about by the COVID-19 pandemic in adolescent activities have affected recreational aspects due to limited contact to prevent virus spread. This has contributed to increased indicators of overweight and obesity and could impact blood pressure levels. Objective: To determine the degree of association between Body Mass Index (BMI) and systemic blood pressure in adolescents. Methods: Systemic blood pressure was measured using continuous ambulatory blood pressure monitoring over 24 hours (ABPM). The sample consisted of 42 high school students with similar urban geographic characteristics in Mexico. All participants underwent anthropometric evaluation to identify notable group characteristics. The correlation was assessed using Spearman's Rho test. Results: Of the 42 participants included, 28.5% showed obesity, 21.45% were overweight, and no patient had hypertension. However, 23.8% showed prehypertension. A significant correlation was evidenced between BMI and both systolic and diastolic blood pressure values, at 0.390 and 0.382, respectively (p-value: 0.013 and 0.015, respectively). Conclusion: BMI was significantly associated with systolic and diastolic blood pressure levels in adolescents from an urban area in Mexico.

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Introducción: El edema agudo del pulmón es una enfermedad frecuente en los pacientes que se presentan en los servicios de urgencias. Objetivo: Caracterizar a los pacientes con edema agudo del pulmón en el servicio de urgencias. Método: Se realizó un estudio descriptivo y transversal en 37 pacientes con edema agudo del pulmón, que asistieron al cuerpo de guardia del Hospital Clinicoquirúrgico Docente Dr. Joaquín Castillo Duany de Santiago de Cuba, desde enero a noviembre de 2019. Las variables estudiadas fueron edad, sexo, estado al egreso y uso de la ventilación no invasiva. Resultados: No hubo diferencias entre ambos sexos, predominaron los mayores de 60 años, que padecían de hipertensión arterial. Se comprobó el poco uso de la ventilación no invasiva o invasiva. Conclusiones: El edema agudo del pulmón es más frecuente en pacientes mayores de 60 años, sin distinción de sexo. La mayoría lo presenta relacionado con la hipertensión arterial y existe un escaso uso de la ventilación no invasiva en estos casos.

Introduction: Acute pulmonary edema is a frequent disease among patients in emergency services. Objective: To characterize patients with acute pulmonary edema who attended the emergency services. Methods: A descriptive and cross-sectional study of 37 patients with acute pulmonary edema who attended the emergency services of Dr. Joaquín Castillo Duany Teaching Clinical Surgical Hospital in Santiago de Cuba was carried out, from January to November 2019. The studied variables were age, sex, alive or dead when discharged, noninvasive ventilation usage. Results: There were no differences between the sexes; there was a prevalence of patients older than 60 years of age, who suffered from hypertension. It was demonstrated low noninvasive or invasive ventilation usage. Conclusions: Acute pulmonary edema is more frequent among patients older than 60 years of age in both sexes. Most of the patients suffered from hypertension and there was a deficit in the implementation of noninvasive ventilation in these cases.

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PURPOSE: To analyze evidence of content validity of the nursing diagnosis (ND) Risk for Unstable Blood Pressure in incarcerated women.  METHOD: A methodological study assessing the content validity of an ND, was performed in Brazil, between June and September 2022, with 49 nurses as experts. The label, definition, and relevance of the 19 risk factors of the ND Risk for Unstable Blood Pressure were appraised. Based on the predictive diversity model, the content validity index (CVI) and respective 95% confidence intervals were calculated for each risk factor. A CVI ≥ 0.8 was considered adequate evidence of content validity. FINDINGS: The label and the definition of the diagnosis was reformulated. The relevance of 19 etiological factors showed a CVI ≥ 0.8. According to the recommendation of the panel of experts, one of the etiological factors was split in two and two label of etiological factors were changed. CONCLUSIONS: A new label (Risk for Imbalanced Blood Pressure), new definition, and 20 etiological factors (11 risk factors, five associated conditions, and four at-risk populations) of the ND Risk for Unstable Blood Pressure in incarcerated women were considered valid. IMPLICATIONS FOR NURSING PRACTICE: NANDA-I accepted the proposal for this nursing diagnosis; hence this study contributed to updating the classification based on scientific evidence. This evidence will favor diagnostic reasoning and recognition of the diagnosis during clinical assessment, and support studies assessing the clinical validity of these elements in incarcerated women.

OBJETIVO: Analisar evidências de validade de conteúdo do diagnóstico de enfermagem (DE) Risco de Pressão Arterial Instável em mulheres encarceradas. MÉTODO: Estudo metodológico de validade de conteúdo de um DE, realizado no Brasil, entre junho e setembro de 2022, tendo 49 enfermeiros como experts. Foram avaliados o título, a definição e a relevância dos 19 fatores de risco do DE Risco de Pressão Arterial Instável. Com base no modelo de diversidade preditiva, foram calculados o Índice de Validade de Conteúdo (IVC) e respectivos intervalos de confiança de 95% para cada fator de risco. IVC ≥ 0,8 foi considerado evidência adequada de validade de conteúdo. RESULTADOS: A relevância de 19 fatores etiológicos mostrou IVC ≥ 0,8. De acordo com a recomendação do painel de experts, um dos fatores etiológicos foi dividido em dois e dois rótulos de fatores etiológicos foram alterados. O título e a definição do diagnóstico foram reformulados. CONCLUSÃO: Foram considerados válidos um novo título (Risco de pressão arterial desequilibrada), nova definição e 20 fatores etiológicos (11 fatores de risco, cinco condições associadas e quatro populações de risco) do DE Risco de Pressão Arterial Instável em mulheres encarceradas. IMPLICAÇÕES PARA A PRÁTICA DE ENFERMAGEM: A NANDA-I aceitou a proposta deste diagnóstico de enfermagem; portanto, este estudo contribuiu para a atualização da classificação baseada em evidências científicas. Essas evidências favorecerão o raciocínio diagnóstico e o reconhecimento do diagnóstico durante a avaliação clínica, além de subsidiar estudos que avaliem a validade clínica desses elementos em mulheres encarceradas.

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OBJECTIVE: Pre-eclampsia (PE) is a serious complication of pregnancy associated with maternal and fetal morbidity and mortality. As current prediction models have limitations and may not be applicable in resource-limited settings, we aimed to develop a machine-learning (ML) algorithm that offers a potential solution for developing accurate and efficient first-trimester prediction of PE. METHODS: We conducted a prospective cohort study in Mexico City, Mexico to develop a first-trimester prediction model for preterm PE (pPE) using ML. Maternal characteristics and locally derived multiples of the median (MoM) values for mean arterial pressure, uterine artery pulsatility index and serum placental growth factor were used for variable selection. The dataset was split into training, validation and test sets. An elastic-net method was employed for predictor selection, and model performance was evaluated using area under the receiver-operating-characteristics curve (AUC) and detection rates (DR) at 10% false-positive rates (FPR). RESULTS: The final analysis included 3050 pregnant women, of whom 124 (4.07%) developed PE. The ML model showed good performance, with AUCs of 0.897, 0.963 and 0.778 for pPE, early-onset PE (ePE) and any type of PE (all-PE), respectively. The DRs at 10% FPR were 76.5%, 88.2% and 50.1% for pPE, ePE and all-PE, respectively. CONCLUSIONS: Our ML model demonstrated high accuracy in predicting pPE and ePE using first-trimester maternal characteristics and locally derived MoM. The model may provide an efficient and accessible tool for early prediction of PE, facilitating timely intervention and improved maternal and fetal outcome. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Eficiencia de un enfoque de aprendizaje automático para la predicción de la preeclampsia en un país de ingresos medios OBJETIVO: La preeclampsia (PE) es una complicación grave del embarazo asociada a morbilidad y mortalidad materna y del feto. Dado que los modelos de predicción actuales tienen limitaciones y pueden no ser aplicables en situaciones con recursos limitados, se propuso desarrollar un algoritmo de aprendizaje automático (AA) que ofrezca una solución con potencial para desarrollar una predicción precisa y eficiente de la PE en el primer trimestre. MÉTODOS: Se realizó un estudio de cohorte prospectivo en Ciudad de México para desarrollar un modelo de predicción de la PE pretérmino (PEp) en el primer trimestre utilizando AA. Para la selección de variables se utilizaron las características maternas y los múltiplos de la mediana (MdM) obtenidos localmente para la presión arterial media, el índice de pulsatilidad de la arteria uterina y el factor de crecimiento placentario sérico. El conjunto de datos se dividió en subconjuntos de datos de entrenamiento, de validación y de test estadístico. Se empleó un método de red elástica para la selección de predictores, y el rendimiento del modelo se evaluó mediante el área bajo la curva de características operativas del receptor (ABC) y las tasas de detección (TD) con tasas de falsos positivos (TFP) del 10%. RESULTADOS: El análisis final incluyó a 3050 mujeres embarazadas, de las cuales 124 (4,07%) desarrollaron PE. El modelo de AA mostró una buena eficiencia, con un ABC de 0,897, 0,963 y 0,778 para la PEp, la PE de aparición temprana (PEat) y cualquier tipo de PE (todas las PE), respectivamente. Las TD con TFP del 10% fueron del 76,5%, 88,2% y 50,1% para la PEp, PEat y todas las PE, respectivamente. CONCLUSIONES: Nuestro modelo de AA demostró una alta precisión en la predicción de la PEp y la PEat utilizando características maternas del primer trimestre y MdM calculados localmente. El modelo puede proporcionar una herramienta eficiente y accesible para la predicción temprana de la PE, facilitando la intervención oportuna y la mejora de los resultados maternos y del feto.

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ABSTRACT Introduction: The Pilates method (PM) combines slow-deep breathing with strengthening and stretching exercises. However, it has been proposed as a method of physical conditioning for several decades and only recently aroused academic/scientific interest, with few reports of the effects of this intervention in hypertensive patients. Objective: to compare PM to aerobic training (AT) effects on hypertensive subjects' blood pressure (BP), functional capacity and autonomic balance. Methods: Twenty-four hypertensive subjects were randomly allocated into two groups: ATG performed three 40 min sessions/week, moderate intensity (40-70% of reserve HR), and PMG performed two 60 min sessions/week; both during the same eight weeks period. Blood pressure (casual and for 24 hours), 6-minute walking test (6-MWT) and autonomic balance were evaluated before and after intervention. Results: There was a reduction on systolic BP (SBP, p=0.007), diastolic (p=0.032) and mean blood pressure (MBP, p=0.016), measured on 24h, on PMG. There was also a 24h SBP reduction on ATG (p=0.021). The PMG had a greater reduction on 24h SBP (-3.4 mmHg, 95% CI -6.6 to -0.2) and MBP (-3.3 mmHg, 95% CI -6.3 to -0.3) than the ATG. ATG held a longer distance in 6-MWT. Casual BP and autonomic balance had no difference. Conclusion: This PM protocol was superior to AT on BP monitored for 24 hours in hypertensive subjects, but AT was better for functional capacity. The eight weeks of training were not enough to change the autonomic balance. Level of Evidence: I; High-quality randomized clinical trial with or without statistically significant difference, but with narrow confidence intervals.

RESUMEN Introducción: el método Pilates (MP) combina la respiración lenta-profunda con ejercicios de fortalecimiento y estiramiento. Aunque se ha propuesto como un método de acondicionamiento físico durante varias décadas, solo recientemente despertó interés académico/científico, con pocos reportes de los efectos de esta intervención en pacientes hipertensos. Objetivo: comparar los efectos del MP con el entrenamiento aeróbico (EA) sobre la presión arterial (PA), la capacidad funcional y el equilibrio autónomo en sujetos hipertensos. Métodos: Veinticuatro sujetos hipertensos fueron asignados aleatoriamente en dos grupos: GEA realizó tres sesiones de 40 min/semana, intensidad moderada (40-70% de la FC de reserva), y GMP realizó dos sesiones de 60 min/semana; ambos durante el mismo período de 8 semanas. La presión arterial (casual y durante 24 horas), la prueba de marcha de 6 minutos y el equilibrio autonómico se evaluaron antes y después de la intervención. Resultados: Hubo una reducción de la PA sistólica (PAS, p = 0,007), diastólica (p = 0,032) y presión arterial media (PAM, p = 0,016), medida a las 24 h, en GMP. También hubo una reducción de PAS en 24 h en GEA (p = 0,021). El GMP tuvo una mayor reducción en la PAS de 24 h (-3,4 mmHg, CI del 95%: -6,6 a -0,2) y la PAM (-3,3 mmHg, CI del 95%: -6,3 a -0,3) que la GEA. GEA mantuvo una mayor distancia en la prueba de marcha de 6 minutos. La PA casual y el equilibrio autónomo no tuvieron diferencias. Conclusión: Este protocolo de MP fue superior al EA en la PA monitoreada durante 24 horas en sujetos hipertensos, pero el EA fue mejor para la capacidad funcional. Las ocho semanas de entrenamiento no fueron suficientes para cambiar el equilibrio autonómico. Nivel de Evidencia: I; Estudio clínico aleatorizado de alta calidad con o sin diferencia estadísticamente significativa, pero con intervalos de confianza estrechos.

RESUMO Introdução: O método Pilates (MP) combina respiração lenta e profunda com exercícios de fortalecimento e alongamento. Embora tenha sido proposto como método de condicionamento físico por várias décadas, só recentemente despertou-se o interesse acadêmico/científico, com poucos relatos dos efeitos dessa intervenção em hipertensos. Objetivos: comparar os efeitos do MP com o treinamento aeróbio (TA) sobre a pressão arterial (PA), capacidade funcional e equilíbrio autonômico em hipertensos. Métodos: Vinte e quatro hipertensos foram alocados aleatoriamente em dois grupos: O grupo GTA realizou três sessões de 40 min/semana, intensidade moderada (40-70% da FC de reserva), e o grupo GMP, que realizou duas sessões de 60 min/semana; ambos durante o mesmo período de 8 semanas. A pressão arterial (casual e após 24 horas), o teste de caminhada de 6 minutos (TC6) e o equilíbrio autonômico foram avaliados antes e depois da intervenção. Resultados: Houve redução da PA sistólica (PAS, p = 0,007), diastólica (p = 0,032) e da pressão arterial média (PAM, p = 0,016), medida em 24h, sem GMP. Também houve redução da PAS em 24h no GTA (p = 0,021). O GMP teve uma redução maior em 24h PAS (-3,4 mmHg, IC 95% -6,6 a -0,2) e PAM (-3,3 mmHg, IC 95% -6,3 a -0,3) do que o GTA. O GTA manteve uma maior distância no TC6. A PA casual e o equilíbrio autonômico não apresentaram diferenças estatísticas. Conclusão: Este protocolo de MP foi superior ao TA na PA monitorada por 24 horas em hipertensos, porém o TA foi superior para a capacidade funcional. As oito semanas de treinamento não foram suficientes para alterar o equilíbrio autonômico. Nível de Evidência: 1; Estudo clínico randomizado de alta qualidade com ou sem diferença estatisticamente significativa, mas com intervalos de confiança estreitos.

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Objetivo: identificar a qualidade e confiabilidade das informações sobre a pressão arterial invasiva abordadas em vídeos do YouTube. Método: pesquisa descritiva e exploratória com vídeos do YouTube sobre pressão arterial invasiva, identificados em busca única no dia 23 de fevereiro de 2023. Os vídeos foram organizados em uma lista de reprodução e submetidos à análise utilizando a ferramenta Discern Questionnaire para a qualidade educacional do vídeo e a Journal of American Medical Association Benchmarks para a confiabilidade e qualidade da informação e realizada análise estatística descritiva simples. Resultados: elencou-se 62 vídeos publicados há dois anos, dos quais 93,55% apresentaram qualidade educacional dos vídeos ruim, 6,45% moderada, demonstrando 70,97% baixa confiabilidade das informações e 32,25% citaram informações incompatíveis com a ciência. Conclusão: os vídeos encontrados na plataforma do YouTube apresentaram lacunas relacionados ao conteúdo de pressão arterial invasiva demonstrando não ser uma fonte confiável de respaldo para aprendizado do enfermeiro.

Objective: to identify the quality and reliability of information on invasive blood pressure covered in YouTube videos. Method: descriptive and exploratory research with YouTube videos on invasive blood pressure, identified in a single search on February 23, 2023. The videos were organized into a playlist and subjected to analysis using the Discern Questionnaire tool for the educational quality of the video and the Journal of American Medical Association Benchmarks for reliability and quality of information and performed simple descriptive statistical analysis. Results: 62 videos published two years ago were listed, of which 93.55% presented poor educational quality, 6.45% moderate, 70.97% demonstrated low reliability of information and 32.25% cited information incompatible with science. Conclusion: The videos found on the You Tube platform presented gaps related to the content of invasive blood pressure, demonstrating that it is not a reliable source of support for nurses' learning.

Objetivos:identificar la calidad y confiabilidad de la información sobre presión arterial invasiva cubierta en videos de YouTube. Método: investigación descriptiva y exploratoria con videos de YouTube sobre presión arterial invasiva, identificados en una única búsqueda el 23 de febrero de 2023. Los videos fueron organizados en una lista de reproducción y sometidos a análisis mediante la herramienta Discernir Cuestionario para la calidad educativa del video y la Journal of American Medical Association Se tomaron puntos de referencia para la confiabilidad y calidad de la información y se realizó un análisis estadístico descriptivo simple. Resultados: Se enumeraron 62 videos publicados hace dos años, de los cuales el 93,55% presentó mala calidad educativa, el 6,45% moderada, el 70,97% demostró baja confiabilidad de la información y el 32,25% citó información incompatible con la ciencia. Conclusión: Los videos encontrados en la plataforma You Tube presentaron lagunas relacionadas al contenido de presión arterial invasiva, demostrando que no es una fuente confiable de apoyo para el aprendizaje de los enfermeros.

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Abstract Introduction: Patients with end-stage renal disease often face a challenging routine of hemodialysis, dietary restrictions, and multiple medications, which can affect their hemodynamic function. Home-based, safe, and nonpharmacological approaches such as transcranial direct current stimulation (tDCS) should be combined with conventional treatment. Objective: To assess the safety and feasibility of tDCS on blood pressure and heart rate in patients with end-stage renal disease undergoing hemodialysis. Method: This is a parallel, randomized, sham-controlled trial. Patients undergoing hemodialysis for more than three months were included. The patients received ten non-consecutive 2mA tDCS sessions on the primary motor cortex . Each session lasted 20 minutes. At baseline and after each of the ten sessions, blood pressure and heart rate of the patients were measured hourly for four hours. Results: Thirty patients were randomized to the active or sham group. The mean difference between the groups was calculated as the mean value of the sham group minus the mean value of the active group. Despite there were no statistical changes for all outcomes considering all 10 sessions, we found differences between groups for systolic -10.93 (-29.1;7.2), diastolic -3.63 (-12.4; 5.1), and mean blood pressure -6.0 (-16.3; 4.2) and hear rate 2.26 (-2.5; 7.1). No serious adverse events were found. The active group showed higher blood pressure values at all points, while heart rate was lower in the active group. Conclusion: tDCS is safe and feasible for patients with end-stage renal disease undergoing hemodialysis. Future studies should investigate whether tDCS could potentially induce a hypotensive protective effect during hemodialysis.

Resumo Introdução: Pacientes com doença renal em estágio terminal (DRET) geralmente enfrentam uma rotina desafiadora de hemodiálise, restrições alimentares e diversos medicamentos, podendo afetar sua função hemodinâmica. Abordagens domiciliares, seguras e não farmacológicas, como a estimulação transcraniana por corrente contínua (ETCC), devem ser combinadas com tratamento convencional. Objetivo: Avaliar segurança e viabilidade da ETCC na pressão arterial e frequência cardíaca em pacientes com DRET em hemodiálise. Método: Estudo paralelo, randomizado, controlado por placebo. Foram incluídos pacientes em hemodiálise por mais de três meses. Os pacientes receberam dez sessões não consecutivas de ETCC de 2mA no córtex motor primário. Cada sessão durou 20 minutos. No início do estudo e após cada uma das dez sessões, a pressão arterial e frequência cardíaca dos pacientes foram medidas a cada hora durante quatro horas. Resultados: Trinta pacientes foram randomizados para grupo ativo ou sham. A diferença média entre grupos foi calculada como valor médio do grupo sham menos valor médio do grupo ativo. Apesar de não haver alterações estatísticas para todos os desfechos considerando as 10 sessões, encontramos diferenças entre os grupos para pressão arterial sistólica -10,93 (-29,1; 7,2), diastólica -3,63 (-12,4; 5,1) e média -6,0 (-16,3; 4,2) e frequência cardíaca 2,26 (-2,5; 7,1). Não encontramos eventos adversos graves. O grupo ativo apresentou valores maiores de pressão arterial em todos os pontos, enquanto a frequência cardíaca foi menor no grupo ativo. Conclusão: ETCC é segura e viável para pacientes com DRET submetidos à hemodiálise. Estudos futuros devem investigar se a ETCC pode potencialmente induzir um efeito hipotensor protetor durante a hemodiálise.

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ABSTRACT Objectives: to develop a Middle-Range Theory for the Risk for imbalanced blood pressure pattern among incarcerated women. Methods: theoretical development study to obtain the theoretical-causal validity of the Nursing Diagnosis Risk for unstable blood pressure. The Middle-Range Theory was developed according to six stages: establishment of the approach to developing the theory; definition of the conceptual models to be later analyzed; definition of the main conceptions; a pictorial diagram; propositions; causal relationships and evidence for practice. Results: two attributes and 20 antecedents related to imbalanced blood pressure were identified, a pictorial diagram was developed, and nine theoretical propositions were presented. Conclusions: the theory developed here favors the diagnostic reasoning of nurses and contributes to planning actions to promote the cardiovascular health of incarcerated women. A new proposition for the diagnosis of Risk for unstable blood pressure was also structured with a new title, definition, and etiological factors.

RESUMEN Objetivos: desarrollar una Teoría de Alcance Mediano para Riesgo de patrón de presión arterial desequilibrada, en mujeres encarceladas. Métodos: desarrollo teórico para la validez teórica-causal del Diagnóstico de Enfermería Riesgo de Presión Arterial Inestable. Fue construida una Teoría de Alcance Mediano en seis etapas: definición del abordaje para construcción de la teoría; definición de modelos conceptuales que serán analizados; definición de conceptos principales; desarrollo del diagrama pictórico; construcción de proposiciones; establecimiento de relaciones causales; y, evidencias para la práctica. Resultados: fueron identificados dos atributos y 20 antecedentes relacionados al patrón de presión arterial desequilibrado; se construyó diagrama pictórico; se presentaron nueve proposiciones teóricas. Conclusiones: la teoría desarrollada favorece el raciocinio diagnóstico de enfermeros y contribuye para planificar acciones promotoras de salud cardiovascular en mujeres encarceladas. Fue posible estructurar nueva propuesta para el diagnóstico Riesgo de Presión Arterial Inestable, con nuevo título, nueva definición y nuevos factores etiológicos.

RESUMO Objetivos: desenvolver Teoria de Médio Alcance para o Risco de padrão pressórico desequilibrado em mulheres encarceradas. Métodos: estudo de desenvolvimento teórico para a validade teórico-causal do Diagnóstico de Enfermagem Risco de pressão arterial instável. Construiu-se Teoria de Médio Alcance a partir de seis etapas: definição da abordagem para construção da teoria; definição dos modelos conceituais a serem analisados; definição dos conceitos principais; desenvolvimento do diagrama pictórico; construção das proposições; estabelecimento das relações causais e evidências para a prática. Resultados: identificaram-se dois atributos e 20 antecedentes relacionados ao padrão pressórico desequilibrado; além da construção de um diagrama pictorial e nove proposições teóricas. Conclusões: a teoria desenvolvida favorece o raciocínio diagnóstico dos enfermeiros e contribui para o planejamento de ações promotoras da saúde cardiovascular das mulheres encarceradas. Ademais, foi possível estruturar uma nova proposta para o diagnóstico Risco de pressão arterial instável, com novo título, nova definição e novos fatores etiológicos.

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SUMMARY OBJECTIVE: The aim of this study was to evaluate mitofusin-2 levels and fetal Doppler ultrasonography effects in patients with severe preeclampsia. METHODS: This single-center case-control study was conducted in the gynecology service of the university hospital in Van. A total of 90 pregnant women aged 18-40 years were included in the study. Of these, 30 are normal, 30 have mild preeclampsia, and 30 are pregnant with severe preeclampsia. In this study, especially in severe preeclampsia patients, serum mitofusin-2 levels and important fetal Doppler flows such as uterine arterial pressure, umbilical arterial pressure, and 1st and 5th minute Apgar scores, birth weight, and the relationship between postnatal outcomes such as week of birth and the number of patients in the neonatal intensive care unit were investigated. RESULTS: There was a significant difference between the three groups in terms of mitofusin-2 levels, which was the highest in the group (p<0.05). Maternal serum mitofusin-2 levels were positively correlated with uterine arterial pressure (r=0.543, p=0.007), umbilical arterial pressure (r=0.238, p=0.008), diastolic blood pressure, and systolic blood pressure (p<0.001). Receiver operating characteristic curve of mitofusin-2 in predicting preeclampsia is as follows: optimal cutoff 1.6 ng/mL; area under the curve: 0.861; 95%CI: 0.786-0.917; sensitivity: 83.9%; and specificity: 70.0%, (p≤0.001). A one-unit increase in mitofusin-2 resulted in a statistically significant 4.21-fold increase in preeclampsia risk. CONCLUSION: This study recommends the use of mitofusin-2 together with fetal Doppler ultrasound findings as a reliable indicator of preeclampsia severity.

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OBJECTIVES: Traumatic hemorrhagic shock is a major death-related factor contributing to mortality in emergencies and can be effectively handled by the Limited Fluid Resuscitation (LFR) method. In the current investigation, the authors analyzed the influence of different administrating blood pressure on the treatment outcomes of LFR. METHODS: 276 participants were enrolled in the current study retrospectively from January 2016 to December 2021 and were divided into three groups based on the administrating blood pressure of LFR. The difference among the three groups regarding serum levels of cytokines as well as blood hemodynamics parameters was analyzed. RESULTS: The results showed after the T2 stage treatment, cytokine levels in the three groups were all significantly influenced by different LFR strategies with medium MAP showing the strongest effects on the expression of all cytokine genes. Moreover, the MAP value was in positive correlation with IL-6, IL-10, and TNF-α levels, but showed no clear relation with IL-4 level in all three groups. Regarding the effects on hemodynamics parameters, the levels of CVP, CO, and CI were slightly increased by the different LFR administrating strategies, and the effect of medium and high MAP was statistically stronger than that of low MAP. CONCLUSION: The present results showed that LFR would influence serum inflammatory levels by improving blood hemodynamics parameters. Medium MAP showed the strongest improving effects with the least side effects, which can be employed as the optimal administrating strategy for LFR in the future.

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Background: Acute intracerebral hemorrhage affects annually more than 1 million people worldwide. Chronic systemic arterial hypertension is the most important modifiable risk factor for spontaneous intracerebral hemorrhage. Objective: To determine the relationship between the decrease in systolic blood pressure (SBP) in patients with intracranial hemorrhage and their short-term functional prognosis. Material and methods: Observational, longitudinal, prospective study in patients with intraparenchymal hemorrhage secondary to hypertensive dyscontrol, older than 18 years, of both sexes. Blood pressure was recorded at admission, every hour during the first 6 hours and every two hours from 8 to 24 hours after admission. Functionality was assessed using the modified Rankin scale at admission, at 6 and 24 hours after admission. Results: 58 patients were included, in whom the reduction of systolic blood pressure at admission was 17.04% and at 24 hours was 31.3 mm Hg; the mean systolic blood pressure was 183.62 mm Hg as opposed to 152.3 mm Hg at discharge (p < 0.001). Conclusions: In the first 6 hours, reduction in ASR is significantly associated with hospital outcome in patients with intracranial hemorrhage. A linear association was observed with improvement and favorable functional prognosis as measured by the modified Rankin scale.

Introducción: la hemorragia intracerebral aguda afecta anualmente a más de un millón de personas en todo el mundo. La hipertensión arterial sistémica crónica es el factor de riesgo modificable más importante para la hemorragia intracerebral espontánea. Objetivo: determinar la relación entre la disminución de la presión arterial sistólica (TAS) en pacientes con hemorragia intracraneal y su pronóstico funcional a corto plazo. Métodos: estudio observacional, longitudinal, prospectivo, en pacientes con hemorragia intraparenquimatosa secundaria a descontrol hipertensivo, mayores de 18 años, de ambos sexos. Se realizaron registros de presión arterial al ingreso, cada hora durante las primeras seis horas y cada dos horas desde las ocho a las 24 horas posterior al ingreso. Se evaluó funcionalidad mediante escala de Rankin modificada al ingreso, a las seis y a las 24 horas después del ingreso. Resultados: se incluyeron 58 pacientes, en quienes la reducción de la TAS al ingreso fue de 17.04% y a las 24 horas fue de 31.3 mm Hg de la presión arterial sistólica; la media de la TAS fue de 183.62 mm Hg a diferencia de la registrada al egreso, que fue de 152.3 mm Hg (p < 0.001). Conclusiones: en las primeras seis horas, la reducción de la TAS está significativamente asociada con el resultado hospitalario en pacientes con hemorragia intracraneal. Se observó una asociación lineal con la mejoría y un pronóstico funcional favorable, medido por la escala de Rankin modificada.

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Introduction: The medial preoptic area (mPOA) participates in thermoregulatory control and blood pressure modulation as shown by studies with electrical stimulation of this area or cobalt chloride injection, a non-selective synapse inhibitor. This study aimed to investigate whether angiotensin II (Ang II) and GABA could act or not in the mPOA to mediate the cardiovascular and micturition control pathways. Methods: Female Wistar rats were submitted to stereotaxic surgery for implantation of a guide cannula into the mPOA 7 days prior to the experiments. Afterwards, the animals were isoflurane- anesthetized and submitted to the catheterization of the femoral artery and vein and urinary bladder cannulation for mean arterial pressure (MAP), heart rate (HR), and intravesical pressure (IP) recordings, respectively. After the baseline MAP, HR, and IP recordings for 15 min, Ang II (0.1 nM, 1 µL), losartan (AT-1 receptor antagonist, 100 nM, 1 µL), GABA (50 mM, 1 µL) or saline (1 µL) were injected into the mPOA, and the variables were measured for additional 30 min. In a different group of rats, the AT-1 receptor, angiotensin II converting enzyme (ACE), and GABAa receptor gene expression was evaluated in mPOA samples by qPCR. The data are as mean ± SEM and submitted to One-way ANOVA (Tukey posttest) or paired Student t-test (P <0.05). Results: The injection of Ang II into the mPOA evoked a significant hypotension (-37±10 mmHg, n = 6, p = 0.024) and bradycardia (-47 ± 20 bpm, p = 0.030) compared to saline (+1 ± 1 mmHg and +6 ± 2 bpm, n = 6). A significant increase in IP was observed after Ang II injection into the mPOA (+72.25 ± 17.91%, p = 0.015 vs. -1.80 ± 2.98%, n = 6, saline). No significant changes were observed in MAP, HR and IP after the losartan injection in the mPOA compared to saline injection. Injection of GABA into the mPOA evoked a significant fall in MAP and HR (-68 ± 2 mmHg, n = 6, p < 0.0001 and -115 ± 14 bpm, n = 6, p = 0.0002 vs. -1 ± 1 mmHg and +4 ± 2 bpm, n = 6, saline), but no significant changes were observed in IP. The AT-1 receptor, ACE and GABAa receptor mRNA expression was observed in all mPOA samples. Discussion: Therefore, in female rats, Ang II mediated transmission in the mPOA is involved in the cardiovascular regulation and in the control of central micturition pathways. A phasic control dependent on AT-1 receptors in the mPOA seems to be involved in the regulation of those cardiovascular and intravesical 3 parameters. In contrast, GABAergic transmission in the mPOA participates in the pathways of cardiovascular control in anesthetized female rats, nevertheless, this neurotransmission is not involved in the micturition control.

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OBJECTIVE: To explain the rationale and protocol of the methods and analyses to be used in the LIVER-PAM randomized clinical trial, which seeks to understand whether a higher mean arterial pressure is capable of reducing the incidence of renal dysfunction postoperatively after liver transplantation. METHODS: LIVER-PAM is an open-label, randomized, controlled, singlecenter clinical trial. Patients randomized to the intervention group will have a mean arterial pressure of 85 - 90mmHg in the initial 24 hours of postoperative management, while patients in the control group will have a mean arterial pressure of 65 - 70mmHg in the same period. A sample of 174 patients will be required to demonstrate a 20% reduction in the absolute incidence of renal dysfunction, with a power of 80% and an alpha of 0.05. CONCLUSION: If a 20% reduction in the absolute incidence of renal dysfunction in the postoperative period of liver transplantation is achieved with higher target mean arterial pressure in the first 24 hours, this would represent an inexpensive and simple therapy for improving current outcomes in the management of liver transplant patients.ClinicalTrials.gov Registry: NCT05068713.

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Previous studies from our laboratory have shown that the pressor response to intracerebroventricular (icv) administered ANG II in normotensive rats or spontaneously hypertensive rats (SHRs) is attenuated by increased central H2O2 concentration, produced either by direct H2O2 icv injection or by increased endogenous H2O2 centrally in response to local catalase inhibition with 3-amino-1,2,4-triazole (ATZ). In the present study, we evaluated the effects of ATZ administered peripherally on arterial pressure and sympathetic and angiotensinergic activity in SHRs. Male SHRs weighing 280-330 g were used. Mean arterial pressure (MAP) and heart rate (HR) were recorded in conscious freely moving SHRs. Acute intravenous injection of ATZ (300 mg/kg of body weight) did not modify MAP and HR during the next 4 h, however, the treatment with ATZ (300 mg/kg of body weight twice per day) for 3 days reduced MAP (144 ± 6, vs. saline, 183 ± 13 mmHg), without changing HR. Intravenous hexamethonium (ganglionic blocker) produced a smaller decrease in MAP 4 h after ATZ (-25 ± 3, vs saline -38 ± 4 mmHg). Losartan (angiotensinergic AT1 receptor blocker) produced a significant depressor response 4 h after ATZ (-22 ± 4, vs. saline: -2 ± 4 mmHg) and in 3-day ATZ treated SHRs (-25 ± 5, vs. saline: -9 ± 4 mmHg). The results suggest that the treatment with ATZ reduces sympathetic activity in SHRs and simultaneously increases angiotensinergic activity.

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