Avaliação da relação entre a qualidade da anotação dos parâmetros fisiológicos, o Escore para Alerta Precoce e a adoção do Plano de Ação em enfermaria de um Hospital Universitário / Assessment of the relationship between the quality of the recording of physiological parameters, the Early Warning Score, and the adoption of the Action Plan in the ward of a University Hospital

Introdução: Em pacientes em enfermarias, eventos adversos evitáveis podem decorrer de deterioração clínica despercebida, frequentemente antecedida por alterações nos sinais vitais, fornecendo oportunidade para intervenção precoce. A adoção de Equipe de Resposta Rápida (ERR) pode melhorar esse desfecho, porém é altamente dependente do monitoramento dos parâmetros fisiológicos e da notificação da ERR. Objetivo: Avaliar a qualidade das informações em prontuários e da resposta assistencial a pacientes em enfermarias com agravamento do estado clínico, resultando em óbito ou transferência para UTI em um Hospital Universitário e fornecer dados para comparação de resultados após implantação da ERR. Material e Métodos: Estudo documental retrospectivo, entre junho de 2013 e julho de 2014, em 128 prontuários de pacientes com piora clínica que resultou em óbito ou admissão em UTI ("evento"). Foram coletados os parâmetros fisiológicos, a pontuação no Escore para Alerta Precoce e o Plano de Ação registrado em 11 momentos que antecederam o "evento", resultando em 11 escores. A relação entre a pontuação do Escore de Alerta Precoce e a execução do Plano de Ação foi classificada como "adequada", "inadequada" ou "ausente". Resultados: Quanto mais se afastava momento de ocorrência do "evento", maior foi o número de dados faltantes, ocasionando Escores de Alerta Precoce não calculáveis. O número de casos adequados foi menor quanto mais distante estava o "evento" do momento da aferição dos parâmetros fisiológicos. Conclusão: Os tempos de resposta foram inadequados ao Plano de Ação. A falha em socorrer pacientes em deterioração clínica é complexa e multifatorial, mas acredita-se que no presente relato isto se deveu, pelo menos em parte, à anotação inadequada dos parâmetros fisiológicos. Esforços devem ser envidados no sentido de reforçar a importância do registro dos parâmetros fisiológicos, de reconhecer, de intervir e de comunicar agravos, essenciais para o correto funcionamento das alças aferente e eferentes das ERR.

Introduction: Preventable adverse events may result from unnoticed clinical deterioration in inpatients, which are often preceded by changes in warning signs, providing an opportunity for early intervention. The adoption of the Rapid Response Team (ERR) can improve the outcome; however, it is highly dependent on monitoring of the physiological parameters and on notification of the ERR. Objective: To evaluate the quality of information in medical records and the care response to patients in wards with worsening of the clinical status, which resulting in death or transfer to the ICU in a University Hospital and provide data for future comparison of results after ERR deployment. Material and Methods: Documentary retrospective study, between June 2013 and July 2014, of 128 medical records of patients with clinical worsening who died in death or admission to the ICU ("event"). The physiological parameters, the score on the Early Warning Score and the Action Plan recorded in 11 moments that preceded the "event" were collected, resulting in 11 scores. The relationship between the Early Warning Score and Action Plan execution was classified as "adequate", "inadequate" or "absent". Results: The further away from the moment of occurrence of the "event", greater the number of missing data, causing non- calculable Early Warning Scores. The number of adequate cases was smaller the further away the "event" was from the moment of measurement of the physiological parameters. Conclusion: Response times were inadequate to the Action Plan. Failure to rescue patients in the clinic is a complex and multifactorial, but it is believed that in the present report this was due, at least in part, to inadequate recording of physiological parameters. Efforts should be made to reinforce the importance of recording physiological parameters, recognizing, intervening, and communicating injuries, which are essential for the correct functioning of the afferent and efferent loops of the ERR.

Effectiveness, implementation, and monitoring variables of intermittent hypoxic bicycle training in patients recovered from COVID-19: The AEROBICOVID study.

Hypoxic exposure is safely associated with exercise for many pathological conditions, providing additional effects on health outcomes. COVID-19 is a new disease, so the physiological repercussions caused by exercise in affected patients and the safety of exposure to hypoxia in these conditions are still unknown. Due to the effects of the disease on the respiratory system and following the sequence of AEROBICOVID research work, this study aimed to evaluate the effectiveness, tolerance and acute safety of 24 bicycle training sessions performed under intermittent hypoxic conditions through analysis of peripheral oxyhemoglobin saturation (SpO2), heart rate (HR), rate of perceived exertion (RPE), blood lactate concentration ([La-]) and symptoms of acute mountain sickness in patients recovered from COVID-19. Participants were allocated to three training groups: the normoxia group (GN) remained in normoxia (inspired fraction of O2 (FiO2) of ∼20.9%, a city with 526 m altitude) for the entire session; the recovery hypoxia group (GHR) was exposed to hypoxia (FiO2 ∼13.5%, corresponding to 3,000 m altitude) all the time except during the effort; the hypoxia group (GH) trained in hypoxia (FiO2 ∼13.5%) throughout the session. The altitude simulation effectively reduced SpO2 mean with significant differences between groups GN, GHR, and GH, being 96.9(1.6), 95.1(3.1), and 87.7(6.5), respectively. Additionally, the proposed exercise and hypoxic stimulus was well-tolerated, since 93% of participants showed no or moderate acute mountain sickness symptoms; maintained nearly 80% of sets at target heart rate; and most frequently reporting session intensity as an RPE of "3" (moderate). The internal load calculation, analyzed through training impulse (TRIMP), calculated using HR [TRIMPHR = HR * training volume (min)] and RPE [TRIMPRPE = RPE * training volume (min)], showed no significant difference between groups. The current strategy effectively promoted the altitude simulation and monitoring variables, being well-tolerated and safely acute exposure, as the low Lake Louise scores and the stable HR, SpO2, and RPE values showed during the sessions.

Use of a Risk Analytic Algorithm to Inform Weaning From Vasoactive Medication in Patients Following Pediatric Cardiac Surgery.

OBJECTIVES: Advanced clinical decision support tools, such as real-time risk analytic algorithms, show promise in assisting clinicians in making more efficient and precise decisions. These algorithms, which calculate the likelihood of a given underlying physiology or future event, have predominantly been used to identify the risk of impending clinical decompensation. There may be broader clinical applications of these models. Using the inadequate delivery of oxygen index, a U.S. Food and Drug Administration-approved risk analytic algorithm predicting the likelihood of low cardiac output state, the primary objective was to evaluate the association of inadequate delivery of oxygen index with success or failure of weaning vasoactive support in postoperative cardiac surgery patients. DESIGN: Multicenter retrospective cohort study. SETTING: Three pediatric cardiac ICUs at tertiary academic children's hospitals. PATIENTS: Infants and children greater than 2 kg and less than 12 years following cardiac surgery, who required vasoactive infusions for greater than 6 hours in the postoperative period. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Postoperative patients were identified who successfully weaned off initial vasoactive infusions (n = 2,645) versus those who failed vasoactive wean (required reinitiation of vasoactive, required mechanical circulatory support, renal replacement therapy, suffered cardiac arrest, or died) (n = 516). Inadequate delivery of oxygen index for final 6 hours of vasoactive wean was captured. Inadequate delivery of oxygen index was significantly elevated in patients with failed versus successful weans (inadequate delivery of oxygen index 11.6 [sd 19.0] vs 6.4 [sd 12.6]; p < 0.001). Mean 6-hour inadequate delivery of oxygen index greater than 50 had strongest association with failed vasoactive wean (adjusted odds ratio, 4.0; 95% CI, 2.5-6.6). In patients who failed wean, reinitiation of vasoactive support was associated with concomitant fall in inadequate delivery of oxygen index (11.1 [sd 18] vs 8.9 [sd 16]; p = 0.007). CONCLUSIONS: During the de-escalation phase of postoperative cardiac ICU management, elevation of the real-time risk analytic model, inadequate delivery of oxygen index, was associated with failure to wean off vasoactive infusions. Future studies should prospectively evaluate utility of risk analytic models as clinical decision support tools in de-escalation practices in critically ill patients.

Internet of Things Applied in Healthcare Based on Open Hardware with Low-Energy Consumption.

OBJECTIVES: The Internet of Things (IoT) and its applications are growing simultaneously. These applications need new intelligent devices along heterogeneous networking. Which makes them costly to implement indeed. Platforms and open devices designed for open-source hardware are possible solutions. This research was conducted under an IoT design, implementation, and assessment model for the remote monitoring of pulse oximetry via oxygen partial saturation (SpO2) and heart rate (HR) with low-energy consumption. METHODS: This study focused on the development of SpO2 and HR measurements that will allow the monitoring and estimation in real time of the user's state and health related to the established parameters. Measurements were acquired and recorded using a remote web server that recorded the acquired variables for further processing. The statistical analysis data allows comparison of the registered data measured with theoretical models. RESULTS: The IoT model was developed use Bluetooth low-energy devices, which comply with low-cost and open-hardware solutions operated via 'HTTP requests' for data transmission and reception from a cloud server to an edge device. Network performance assessment was conducted to guarantee the availability and integrity of the acquired values and signals. The system measured SpO2 and HR variables. The most significant result was to achieve energy consumption 20% lower than that of devices in the market. CONCLUSIONS: In summary, the acquired data validation based on the IoT model had a transmission error of 0.001% which proves its applicability in healthcare.

Lung monitoring with electrical impedance tomography: technical considerations and clinical applications.

In recent years there has been substantial progress in the imaging evaluation of patients with lung disease requiring mechanical ventilatory assistance. This has been demonstrated by the inclusion of pulmonary ultrasound, positron emission tomography, electrical impedance tomography (EIT), and magnetic resonance imaging (MRI). The EIT uses electric current to evaluate the distribution of alternating current conductivity within the thoracic cavity. The advantage of the latter is that it is non-invasive, bedside radiation-free functional imaging modality for continuous monitoring of lung ventilation and perfusion. EIT can detect recruitment or derecruitment, overdistension, variation of poorly ventilated lung units (silent spaces), and pendelluft phenomenon in spontaneously breathing patients. In addition, the regional expiratory time constants have been recently explored.

Cost Effectiveness of Intracranial Pressure Monitoring in Pediatric Patients with Severe Traumatic Brain Injury: A Simulation Modeling Approach.

OBJECTIVES: To conduct an economic evaluation of intracranial pressure (ICP) monitoring on the basis of current evidence from pediatric patients with severe traumatic brain injury, through a statistical model. METHODS: The statistical model is a decision tree, whose branches take into account the severity of the lesion, the hospitalization costs, and the quality-adjusted life-year for the first 6 months post-trauma. The inputs consist of probability distributions calculated from a sample of 33 surviving children with severe traumatic brain injury, divided into two groups: with ICP monitoring (monitoring group) and without ICP monitoring (control group). The uncertainty of the parameters from the sample was quantified through a probabilistic sensitivity analysis using the Monte-Carlo simulation method. The model overcomes the drawbacks of small sample sizes, unequal groups, and the ethical difficulty in randomly assigning patients to a control group (without monitoring). RESULTS: The incremental cost in the monitoring group was Mex$3,934 (Mexican pesos), with an increase in quality-adjusted life-year of 0.05. The incremental cost-effectiveness ratio was Mex$81,062. The cost-effectiveness acceptability curve had a maximum at 54% of the cost effective iterations. The incremental net health benefit for a willingness to pay equal to 1 time the per capita gross domestic product for Mexico was 0.03, and the incremental net monetary benefit was Mex$5,358. CONCLUSIONS: The results of the model suggest that ICP monitoring is cost effective because there was a monetary gain in terms of the incremental net monetary benefit.

Clinical validation study of the SignCare Vital Signs Monitor of Fundación Cardiovascular de Colombia / Estudio de validación clínica del monitor de signos vitales SignCare de la Fundación Cardiovascular de Colombia

Abstract Introduction: In Colombia, due to the difficult access to health services and to geographic conditions, the implementation and innovation of telemedicine technological tools is a priority. Having a validated vital signs monitor (VSM) improves proper medical treatment and diagnosis. Objective: To design and perform clinical trials for the SignCare VSM. Materials and methods: A device for continuous monitoring of electrocardiography, respiration, oxygen saturation, temperature and noninvasive blood pressure (NIBP) was designed. This device was validated in a laboratory in order to ensure a robust prototype, close to the level of commercial medical devices. Clinical trials were performed through a cross -section study with 98 patients, whose vital signs were measured using the SignCare monitor and a commercial monitor. These two measurements were compared using Pearson's correlation coefficients. Results: There were no statistically significant differences between the results obtained with the SignCare VSM and the commercial monitor. The highest correlations were found for the following items: heart rate by electrocardiogram (r=0.844), heart rate by oxymetry (r=0.821), body temperature (r=0.895), systolic blood pressure (r=0.780), and diastolic blood pressure (r=0.811). Conclusions: The SignCare device is as reliable as the commercial monitor in the qualitative detection of morphologic alterations of electrocardiogram records, as well as in breathing, temperature, oxygen saturation and blood pressure parameters, which makes it recommendable for clinical use in adult population.

Resumen Introducción. Debido a las dificultades geográficas y de acceso a los servicios de salud en Colombia, la implementación e innovación con herramientas de telemedicina se convierte en un tema prioritario; contar con un monitor de signos vitales validado favorece el tratamiento médico oportuno. Objetivos Diseñar y realizar la validación clínica del monitor de signos vitales SignCare. Materiales y métodos. Se diseñó un equipo para el monitoreo constante de las señales de electrocardiografía, respiración, saturación de oxígeno, temperatura y presión arterial no invasiva. El dispositivo fue validado en el laboratorio para asegurar un prototipo robusto a nivel de dispositivos médicos comerciales. La validación clínica se hizo mediante un estudio de corte transversal en 98 pacientes a los que se les realizaron mediciones con el monitor SignCare y con un monitor comercial. Se compararon estas dos mediciones mediante coeficientes de correlación de Pearson. Resultados. No hubo diferencias estadísticamente significativas en cuanto a los resultados obtenidos con el monitor SignCare y con el monitor comercial. Las mayores correlaciones se presentaron en la frecuencia cardíaca por electrocardiograma (r=0.844), frecuencia cardíaca por oximetría (r=0.821), temperatura corporal (r=0.895), tensión arterial sistólica (r=0.780) y tensión arterial diastólica (0.811). Conclusiones. El monitor SignCare es tan confiable como el monitor comercial para la detección cualitativa de alteraciones morfológicas del registro electrocardiográfico, lo que hace posible su recomendación para uso clínico en población adulta.

Costo fisiológico de marcha confortable según el nivel socioeconómico en adultos mayores autovalentes de la comunidad en Talca, Chile / Psychological Cost of Comfortable Gait According to Socioeconomic Status in Self-Reliant Elderly in Talca, Chile / Custo fisiológico de caminhada confortável de acordo com a status socioeconômica em idosos autovalentes comunidade em Talca, Chile

Introducción: la funcionalidad en adultos mayores (AM) se encuentra condicionada por aspectos sociales, económicos y culturales; al respecto, la velocidad de marcha confortable (MC) es considerada su indicador más específico, lo que traduce un costo fisiológico (CF) asociado. En este escenario, el propósito de esta investigación es evaluar el CF de MC, según el nivel socioeconómico (NSE) en AM autovalentes. Materiales y métodos: participaron 75 AM autovalentes, los cuales fueron clasificados según el NSE en medio-bajo y medio-alto. Se solicitó a cada participante que caminara naturalmente durante 3 minutos en una pista de forma elíptica, se registró cada 15 segundos la distancia recorrida y la frecuencia cardiaca de trabajo, esto para el correspondiente cálculo del índice de costo fisiológico (ICF). Además, se estableció como punto crítico fisiológico (PCF) el aumento significativo del ICF desde el estado basal. Resultados: el ICF fue similar según NSE (p = 0,885), siendo mayor en mujeres (≈0,3 lat/m) que en hombres (≈0,2 lat/m; p < 0,001). La distancia recorrida fue alrededor de 200 metros en ambos NSE y géneros, siendo superior en el NSE medio-bajo para el grupo masculino frente al femenino (p = 0,009). En mujeres el PCF aparece 15 segundos antes en el NSE medio-alto, mientras que en hombres el ICF se mantiene estable durante toda la prueba. Conclusión: el NSE no influye en el CF de mc de AM autovalentes, no obstante, se confirma al género como principal factor en su traducción. Se recomienda la inclusión metodológica del PCf, dada su pertinencia para el análisis de la eficiencia de marcha.

Introduction: Elderly functionality is conditioned by social, economic and cultural aspects. The Comfortable Gait Speed (CGS) is considered the most specific indicator of functional capacity, reflecting an associated Physiological Cost (FC). Under this scenario, the purpose of this research is to evaluate the Comfortable Gait Physiologic Cost (CGPC) according to Socioeconomic Status (SES) in self-reliant elderly. Materials and methods: 75 self-reliant elderly were classified into medium-low and medium-high SES levels. Each participant was asked to walk naturally for three minutes on an elliptical track. Traveled distance and heart rate were recorded every 15 seconds for the Physio-logical Cost Index (PCI) calculation. Furthermore, the significant increase from baseline PCI was established as the Critical Physiological Point (CPP). Results: There was no difference in the PCI in relation to the SSE (p = 0.885). However, it was higher in women (≈0,3 lat / m) when compared to men (≈ 0.2 beats/m; p < 0.001). The traveled distance was about 200 meters in both SES and gender, showing higher in the medium-low SES for the male versus the female group (p = 0.009). In women the CPP appears 15 seconds earlier in the medium-high SES, while in men the pci remains stable throughout the test. Conclusions: The SES does not influence the CGPC in self-reliant elderly; however gender is confirmed as the main factor in its translation. Methodological CPP inclusion is recommended given its relevance to the analysis of gait efficiency.

Introdução: A capacidade funcional em idosos é condicionada por aspectos sociais, econômicos e culturais. A Velocidade de Caminhada Confortável (VCC) é considerada o indicador mais específico da capacidade funcional, traduzindo um Custo Fisiológico (CF) associado. Neste cenário, o objetivo deste estudo é avaliar o CF da VCC relacionada ao Status Socioeconômico (SSE) de idosos autovalentes. Materiais e métodos: Fizeram parte deste estudo 75 idosos independentes, os quais foram classificados de acordo com o SSE em média-baixa e média-alta. Cada participante foi motivado a caminhar naturalmente por 3 minutos em uma pista elíptica. Foram registrados a cada 15 segundos distância percorrida e da freqüência cardíaca, para o cálculo do Índice de Custo Fisiológico (ICF). Além disso, estabeleceu-se como um Ponto Crítico Fisiológico (PCF) em ICF aumento significativo a partir da linha de base. Resultados: Não houve diferença no ICF em relação ao SSE (p = 0,885), porém, o mesmo foi maior em mulheres (≈0,3 lat/m) comparado aos homens (≈0,2 lat/m; p < 0,001). A distância percorrida foi de cerca de 200 metros em ambos SSE e gêneros, sendo maior no SSE médio-baixo para o sexo masculino em relação o grupo feminino (p = 0,009). Nas mulheres, o PCF aparece 15 segundos antes no SSE médio-alto, nos homens o ICF permanece estável ao longo do teste. Conclusão: O SSE não influencia o CF da VCC de idosos independentes, no entanto, o gênero influência de forma importante na tradução do CF. É recomendada a inclusão metodológica do PCF devido à sua relevância para a análise da eficiência da marcha.

Análise contínua de medidas de cateter de artéria pulmonar volumétrico, ecotransesofágico, variações da pressão arterial sistêmica e marcadores de hipoperfusão tissular no choque hemorrágico em suínos / Continuous analyses of pulmonary, volumetric artery catheter parameters, transesophageal echocardiography, pressure pulse variation, and biomarkers of tissue hypoperfusion during hemorrhagic shock in swine: experimental study in swines

INTRODUÇÃO: Diferentes parâmetros hemodinâmicos, incluindo os indicadores estáticos de pré-carga cardíaca como o índice de volume diastólico final ventrículo direito (IVDFVD) e parâmetros dinâmicos como a variação de pressão de pulso (VPP) têm sido usados na tomada de decisão para considerar o processo da expansão volêmica em pacientes em estado grave. O objetivo deste estudo foi comparar a reanimação por fluidos guiados tanto por VPP ou IVDFVD após choque hemorrágico induzido experimentalmente. MÉTODO: vinte e seis suínos anestesiados e ventilados mecanicamente foram alocados em três grupos: controle (Grupo I), VPP (Grupo II) e IVDFVD (Grupo III). Foi induzido choque hemorrágico por retirada de sangue até atingir a pressão arterial média de 40mmhg, que foi mantida por 60 minutos. Parâmetros foram medidos no tempo basal (B), no tempo do choque (Choque 0), sessenta minutos depois do choque (Choque 60), imediatamente depois da ressuscitação com hidroxietilamido 6% (130/0. 4) (R0), uma hora (R60) e duas horas (R120) depois ressuscitação. Os pontos de avaliação da reanimação por fluidos foram determinados pelo retorno aos valores basais iniciais de VPP e IVDFVD. A análise estatística dos dados foi baseada em ANOVA para medidas repetidas seguidos pelo teste de Bonferroni (P<0.05%). RESULTADOS: O volume e tempo para ressuscitação foram maiores no grupo III do que no grupo II (Grupo III = 1305±331ml e Grupo II = 965±245ml; p<0.05 e Grupo III = 24.8± 4.7min e Grupo II = 8.8 ± 1.3 min, p<0.01, respectivamente). Todos os parâmetros estáticos e dinâmicos, bem como os biomarcadores de oxigenação tecidual foram afetados pelo choque hemorrágico e quase todos os parâmetros foram totalmente restaurados após a reanimação em ambos os grupos. CONCLUSÃO: Neste estudo em modelo de choque hemorrágico, a reanimação guiada pelo VPP utilizou menor quantidade de fluido e menor quantidade de tempo do que quando guiado por IVDFVD derivado de cateter de artéria pulmonar.

INTRODUCTION: Different hemodynamic parameters, including static indicators of cardiac preload as right ventricular end-diastolic volume index (RVEDVI) and dynamic parameters as pulse pressure variation (PPV) have been used in the decision-making process regarding volume expansion in critically ill patients. The objective of this study was to compare fluid resuscitation guided by either PPV or RVEDVI after experimentally-induced hemorrhagic shock. METHODS: 26 anesthetized and mechanically ventilated pigs were allocated into control (Group-I), PPV (Group-II) and RVEDVI (Group- III). Hemorrhagic shock was induced by blood withdrawal to target mean arterial pressure of 40mmHg, maintained for 60 minutes. Parameters were measured at baseline, time of shock, sixty minutes after shock, immediately after resuscitation with hydroxyethyl starch 6% (130/0.4), one hour and two hours thereafter. The endpoint of fluid resuscitation was determined as the baseline values of PPV and RVEDVI. Statistical analysis of data was based on ANOVA for repeated measures followed by the Bonferroni test (P<0.05). RESULTS: Volume and time to resuscitation were higher in Group-III than in Group-II (Group-III = 1305±331ml and Group-II = 965±245ml; p<0.05 and Group-IIII = 24.8±4.7min and Group-II = 8.8±1.3 min, p<0.05, respectively). All static and dynamic parameters and biomarkers of tissue oxygenation were affected by hemorrhagic shock and nearly all parameters were restored after resuscitation in both groups. CONCLUSION: In the proposed model of hemorrhagic shock, resuscitation to the established endpoints was achieved within a smaller amount of time and with less volume when guided by PPV than when guided by pulmonary artery catheter-derived RVEDVI.