RESUMO
BACKGROUND: The objective of this study was to assess long-term outcome in patients with spontaneous intracerebral hemorrhage admitted to the intensive care unit. METHODS: Mortality and Glasgow Outcome Scale, Barthel Index, and 5-level EQ-5D version (EQ-5D-5L) scores were analyzed in a multicenter cohort study of three Spanish hospitals (336 patients). Mortality was also analyzed in the Medical Information Mart for Intensive Care III (MIMIC-III) database. RESULTS: The median (25th percentile-75th percentile) age was 62 (50-70) years, the median Glasgow Coma Score was 7 (4-11) points, and the median Acute Physiology and Chronic Health disease Classification System II (APACHE-II) score was 21 (15-26) points. Hospital mortality was 54.17%, mortality at 90 days was 56%, mortality at 1 year was 59.2%, and mortality at 5 years was 66.4%. In the Glasgow Outcome Scale, a normal or disabled self-sufficient situation was recorded in 21.5% of patients at 6 months, in 25.5% of patients after 1 year, and in 22.1% of patients after 5 years of follow-up (4.5% missing). The Barthel Index score of survivors improved over time: 50 (25-80) points at 6 months, 70 (35-95) points at 1 year, and 90 (40-100) points at 5 years (p < 0.001). Quality of life evaluated with the EQ-5D-5L at 1 year and 5 years indicated that greater than 50% of patients had no problems or slight problems in all items (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). In the MIMIC-III study (N = 1354), hospital mortality was 31.83% and was 40.5% at 90 days and 56.2% after 5 years. CONCLUSIONS: In patients admitted to the intensive care unit with a diagnosis of nontraumatic intracerebral hemorrhage, hospital mortality up to 90 days after admission is very high. Between 90 days and 5 years after admission, mortality is not high. A large percentage of survivors presented a significant deficit in quality of life and functional status, although with progressive improvement over time. Five years after the hemorrhagic stroke, a survival of 30% was observed, with a good functional status seen in 20% of patients who had been admitted to the hospital.
Assuntos
Hemorragia Cerebral , Cuidados Críticos , Estado Funcional , Mortalidade Hospitalar , Qualidade de Vida , Humanos , Pessoa de Meia-Idade , Idoso , Masculino , Feminino , Hemorragia Cerebral/mortalidade , Hemorragia Cerebral/terapia , Escala de Resultado de Glasgow , Espanha/epidemiologia , Unidades de Terapia Intensiva , Seguimentos , APACHE , Estudos de CoortesRESUMO
The prevalence of multivariate time series data across several disciplines fosters a demand and, subsequently, significant growth in the research and advancement of multivariate time series analysis. Drawing inspiration from a popular natural language processing model, the Transformer, we propose the Spatio-Temporal Transformer with Relative Embeddings (STTRE) to address multivariate time series forecasting. This work primarily focuses on developing a Transformer-based framework that can fully exploit the spatio-temporal nature of a multivariate time series by incorporating several of the Transformer's key components, but with augmentations that allow them to excel in multivariate time series forecasting. Current Transformer-based models for multivariate time series often neglect the data's spatial component(s) and utilize absolute position embeddings as their only means to detect the data's temporal component(s), which we show is flawed for time series applications. The lack of emphasis on fully exploiting the spatio-temporality of the data can incur subpar results in terms of accuracy. We redesign relative position representations, which we rename to relative embeddings, to unveil a new method for detecting latent spatial, temporal, and spatio-temporal dependencies more effectively than previous Transformer-based models. We couple these relative embeddings with a restructuring of the Transformer's primary sequence learning mechanism, multi-head attention, in a way that allows for full utilization of relative embeddings, thus achieving up to a 24% improvement in accuracy over other state-of-the-art multivariate time series models on a comprehensive selection of publicly available multivariate time series forecasting datasets.
Assuntos
Aprendizagem , Processamento de Linguagem Natural , Fatores de TempoRESUMO
Objetivo Estudio transversal prospectivo realizado para conocer la prevalencia y el patrón de consumo de alcohol (CA) de los pacientes con carcinoma hepatocelular (CHC) y evaluar la utilidad del AUDIT en estos. Métodos Se incluyeron 102 pacientes consecutivos atendidos en consulta entre febrero y marzo de 2022; se excluyeron aquellos con encefalopatía hepática en el momento de la entrevista, pacientes en lista de espera para trasplante por esta indicación y aquellos en seguimiento postrasplante. Resultados La prevalencia del CA en pacientes con diagnóstico de CHC es del 35%, si bien menos del 10% consume más de 100g de etanol a la semana. El CA fue más frecuente en varones, ambiente urbano, con diagnóstico de CHC hace más de un año y en pacientes en estadio inicial/muy inicial del BCLC. La puntuación AUDIT mayor o igual a 3 (AUROC 0,849) predice cualquier CA con una sensibilidad del 75% (IC 95%: 59,47-90,53%) y con una especificidad del 84% (IC 95%: 74,70-94,05%). Conclusiones A pesar del diagnóstico de CHC, más de un tercio de los pacientes consume alcohol. La puntuación AUDIT igual o mayor de 3 discrimina cualquier CA con una sensibilidad del 75% y una especificidad del 84% en esta población (AU)
Aim Prospective cross-sectional study conducted to determine the prevalence and pattern of alcohol consumption (AC) in patients with hepatocellular carcinoma (HCC) and to assess the utility of the AUDIT in HCC patients. Methods One hundred and two consecutive patients form our HCC monographic outpatient clinic visited between February and March 2022 were included. Patients with hepatic encephalopathy at the time of the interview, on the waiting list for liver transplantation and those undergoing post-transplant follow-up were excluded. Results The prevalence of AC in patients diagnosed with HCC is 35%, although less than 10% consume more than 100g per week. AC was more frequent in males, in an urban environment, with a diagnosis of HCC more than a year ago, and in patients in early/very early stages of BCLC. AUDIT score greater than or equal to 3 (AUROC 0.849) predicts any AC with a sensitivity of 75% (95% CI: 59.47-90.53%) and a specificity of 84% (95% CI: 74.70-94.05%). Conclusions Despite the diagnosis of HCC, more than a third of the patients consume alcohol. An AUDIT score equal to or greater than 3 discriminates any AC with a sensitivity of 75% and a specificity of 84% in this population (AU)
Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Consumo de Bebidas Alcoólicas/epidemiologia , Carcinoma Hepatocelular , Neoplasias Hepáticas , Entrevistas como Assunto , Estudos Transversais , Estudos Prospectivos , PrevalênciaRESUMO
Background: The Clinical Trial of Sarilumab in Adults With COVID-19 (SARICOR) showed that patients with coronavirus disease 2019 (COVID-19) pneumonia and increased levels of interleukin (IL)-6 might benefit from blockade of the IL-6 pathway. However, the benefit from this intervention might not be uniform. In this subanalysis, we sought to determine if other immunoactivation markers, besides IL-6, could identify which subgroup of patients benefit most from this intervention. Methods: The SARICOR trial was a phase II, open-label, multicenter, controlled trial (July 2020-March 2021) in which patients were randomized to receive usual care (UC; control group), UC plus a single dose of sarilumab 200â mg (sarilumab-200 group), or UC plus a single dose of sarilumab 400â mg (sarilumab-400 group). Patients who had baseline serum samples for cytokine determination (IL-8, IL-10, monocyte chemoattractant protein-1, interferon-inducible protein [IP]-10) were included in this secondary analysis. Progression to acute respiratory distress syndrome (ARDS) according to cytokine levels and treatment received was evaluated. Results: One hundred one (88%) of 115 patients enrolled in the SARICOR trial had serum samples (control group: n = 33; sarilumab-200: n = 33; sarilumab-400: n = 35). Among all evaluated biomarkers, IP-10 showed the strongest association with treatment outcome. Patients with IP-10 ≥2500â pg/mL treated with sarilumab-400 had a lower probability of progression (13%) compared with the control group (58%; hazard ratio, 0.19; 95% CI, 0.04-0.90; P = .04). Conversely, patients with IP-10 <2500â pg/mL did not show these differences. Conclusions: IP-10 may predict progression to ARDS in patients with COVID-19 pneumonia and IL-6 levels >40â pg/mL. Importantly, IP-10 value <2500â pg/mL might discriminate those individuals who might not benefit from sarilumab therapy among those with high IL-6 levels.
RESUMO
AIM: Prospective cross-sectional study conducted to determine the prevalence and pattern of alcohol consumption (AC) in patients with hepatocellular carcinoma (HCC) and to assess the utility of the AUDIT in HCC patients. METHODS: One hundred and two consecutive patients form our HCC monographic outpatient clinic visited between February and March 2022 were included. Patients with hepatic encephalopathy at the time of the interview, on the waiting list for liver transplantation and those undergoing post-transplant follow-up were excluded. RESULTS: The prevalence of AC in patients diagnosed with HCC is 35%, although less than 10% consume more than 100g per week. AC was more frequent in males, in an urban environment, with a diagnosis of HCC more than a year ago, and in patients in early/very early stages of BCLC. AUDIT score greater than or equal to 3 (AUROC 0.849) predicts any AC with a sensitivity of 75% (95% CI: 59.47-90.53%) and a specificity of 84% (95% CI: 74.70-94.05%). CONCLUSIONS: Despite the diagnosis of HCC, more than a third of the patients consume alcohol. An AUDIT score equal to or greater than 3 discriminates any AC with a sensitivity of 75% and a specificity of 84% in this population.
Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Masculino , Humanos , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/etiologia , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/etiologia , Neoplasias Hepáticas/diagnóstico , Estudos Prospectivos , Prevalência , Estudos Transversais , Estadiamento de Neoplasias , Consumo de Bebidas Alcoólicas/efeitos adversos , Consumo de Bebidas Alcoólicas/epidemiologiaRESUMO
The development of a competent (pre)catalyst for the oxygen evolution reaction (OER) to produce green hydrogen is critical for a carbon-neutral economy. In this aspect, the low-temperature, single-source precursor (SSP) method allows the formation of highly efficient OER electrocatalysts, with better control over their structural and electronic properties. Herein, a transition metal (TM) based chalcogenide material, nickel sulfide (NiS), is prepared from a novel molecular complex [NiII (PyHS)4 ][OTf]2 (1) and utilized as a (pre)catalyst for OER. The NiS (pre)catalyst requires an overpotential of only 255 mV to reach the benchmark current density of 10 mA cm-2 and shows 63 h of chronopotentiometry (CP) stability along with over 95% Faradaic efficiency in 1 m KOH. Several ex situ measurements and quasi in situ Raman spectroscopy uncover that NiS irreversibly transformed to a carbonate-intercalated γ-NiOOH phase under the alkaline OER conditions, which serves as the actual active structure for the OER. Additionally, this in situ formed active phase successfully catalyzes the selective oxidation of alcohol, aldehyde, and amine-based organic substrates to value-added chemicals, with high efficiencies.
RESUMO
This article investigates the local stability and local convergence of a class of neural network (NN) controllers with error integrals as inputs for reference tracking. It is formally proved that if the input of the NN controller consists exclusively of error terms, the control system shows a non-zero steady-state error for any constant reference except for one specific point, for both single-layer and multi-layer NN controllers. It is further proved that adding error integrals to the input of the (single- and multi-layers) NN controller is one sufficient way to remove the steady-state error for any constant reference. Due to the nonlinearity of the NN controllers, the NN control systems are linearized at the equilibrium points. We provide proof that if all the eigenvalues of the linearized NN control system have negative real parts, local asymptotic stability and local exponential convergence are guaranteed. Two case studies were explored to verify the theoretical results: a single-layer NN controller in a 1-D system and a four-layer NN controller in a 2-D system applied to renewable energy integration. Simulations demonstrate that when NN controllers and the corresponding generalized proportional-integral (PI) controllers have the same eigenvalues, all control systems exhibit almost the same responses in a small neighborhood of their respective equilibrium points.
Assuntos
Algoritmos , Redes Neurais de Computação , Simulação por Computador , Dinâmica não Linear , RetroalimentaçãoRESUMO
Clear cell renal cell carcinoma is the most common renal neoplasm in adults. It has a relatively slow growth pattern that delays diagnosis until the onset of local, paraneoplastic or metastasis-related manifestations, and an unpredictable behavior ranging from aggressive tumors with poor short-term prognosis to late recurrence cases where metastases are identified years after nephrectomy, the latter scenario being the subject of the case we herein report.
Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Humanos , Carcinoma de Células Renais/complicações , Carcinoma de Células Renais/diagnóstico por imagem , Neoplasias Renais/complicações , Neoplasias Renais/diagnóstico por imagem , Estômago/patologia , Hemorragia Gastrointestinal/complicações , Nefrectomia , Recidiva Local de NeoplasiaRESUMO
Unplanned hospital readmission is a problem that affects hospitals worldwide and is due to different factors. The identification of those factors can help determine which patients are at greater risk of hospital readmission for early intervention. Our end goal is to predict and identify patterns to (i) feed a decision support system for efficient management of patients and resources and (ii) detect patients at high risk of 30-days readmission enabling preventive actions to improve management of hospital discharges. This study aims to analyze whether natural language processing and specifically keyword extractions tools and sentiment analysis can support 30-days readmission prediction. Features extracted from medical history notes and discharge reports were used to train a Logistic Regression model. The resulting model obtains an AUC of 0.63 indicating that the sentiment polarity score of the discharge report and several of the extracted keywords are representative features to consider.
Assuntos
Prontuários Médicos , Readmissão do Paciente , Análise de Sentimentos , Humanos , Modelos Logísticos , Processamento de Linguagem Natural , Alta do Paciente , Estudos Retrospectivos , Fatores de RiscoRESUMO
The usage of context open data, such as environmental data, socio-economic resources, etc., in clinical settings has been limited till now. But in recent years the number of studies that consider these factors is increasing. However, for clinicians, researchers or other stakeholders to be able to use this information in clinical practice, appropriate visualizations tools must be developed. At the same time, the data are generally displayed in formats that are difficult to interpret. The use of geolocalized visualizing tools through maps provides a better understanding in most cases. The proposed tool aims to contribute to the development of systems that can help to the exploitation of clinical and context open data, making them more easily interpretable.
Assuntos
Humanos , Feminino , Idoso , Neoplasias dos Ductos Biliares/diagnóstico por imagem , Neoplasias dos Ductos Biliares/cirurgia , Ductos Biliares Intra-Hepáticos/diagnóstico por imagem , Ductos Biliares Intra-Hepáticos/patologia , Procedimentos Cirúrgicos do Sistema Biliar , Colangiocarcinoma/diagnóstico por imagem , Colangiocarcinoma/cirurgia , Dilatação Patológica , Papiloma/diagnóstico por imagem , Papiloma/cirurgiaAssuntos
Humanos , Feminino , Pessoa de Meia-Idade , Neoplasias do Sistema Digestório , Ressecção Endoscópica de Mucosa/métodos , Fibroma/diagnóstico por imagem , Fibroma/cirurgia , Mucosa Gástrica/patologia , Mucosa Gástrica/cirurgia , Gastroscopia/métodos , Neoplasias Gástricas/diagnóstico por imagem , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Resultado do TratamentoRESUMO
Nasopharynx metastases are an extremely rare cause of hepatocarcinoma debut. We report the case of a 71 year old man who presented symptoms of nosebleed and diplopia event, diagnosed by imaging and biopsy of ethmoidal metastasis of hepatocarcinoma.
Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Idoso , Biópsia , Carcinoma Hepatocelular/patologia , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/patologia , MasculinoRESUMO
We report the case of a 78-year-old woman with dyspepsia for several years and a history of cholecystectomy, informed by pathology as calculous cholecystopathy, where CT revealed a left-sided intrahepatic bile duct dilation. Cholangio-MRI confirmed a size increase in the distal intrahepatic bile duct on the left side, with T2-hyperintense contents with scarce contrast enhancement, which resulted in the observed dilation. . A Spybite® forceps was used to obtain a biopsy sample, which showed a benign papillary growth compatible with biliary papillomatosis. Biliary papillomatosis or intraductal papillary neoplasm of the biliary tract is a rare, uncommon condition characterized by intraductal papillary growth of the biliary epithelium. It has a tendency towards malignization, hence must be considered a premalignant condition . Major symptoms include jaundice, abdominal pain, and repeat cholangitis, with imaging studies being key for diagnostic suspicion . The development of cholangioscopy with biopsies allows an early diagnosis of malignant precursor lesions of the bile duct, thus allowing early treatment.
Assuntos
Neoplasias dos Ductos Biliares , Procedimentos Cirúrgicos do Sistema Biliar , Colangiocarcinoma , Papiloma , Idoso , Neoplasias dos Ductos Biliares/diagnóstico por imagem , Neoplasias dos Ductos Biliares/cirurgia , Ductos Biliares Intra-Hepáticos/diagnóstico por imagem , Ductos Biliares Intra-Hepáticos/patologia , Colangiocarcinoma/diagnóstico por imagem , Colangiocarcinoma/cirurgia , Dilatação Patológica , Feminino , Humanos , Papiloma/diagnóstico por imagem , Papiloma/cirurgiaRESUMO
We report the case of a 62-year-old woman with no history of interest who presented with dyspepsia of 2 years' standing. Gastroscopy revealed a subepithelial lesion at the greater antral curvature with irregular surface and preserved mucosal and vascular pattern, 15 mm in diameter. Because of clinical persistence a radial endoscopic ultrasonogram (EUS) was performed, which showed a well-delimited hypoechoic lesion with heterogeneous areas that was dependent on the muscularis mucosae layer. A biopsy was obtained using the "bite-on-bite" technique, which provided no pathological findings. With these findings an endoscopic submucosal dissection (ESD) procedure was performed with wide margins and no complications. Pathology found low-grade mesenchymal fusicellular proliferation dependent on the muscularis mucosae with immunohistochemistry positive for smooth-muscle vimentin and actin, consistent with plexiform fibromyxoma.
Assuntos
Neoplasias do Sistema Digestório , Ressecção Endoscópica de Mucosa , Fibroma , Neoplasias Gástricas , Ressecção Endoscópica de Mucosa/métodos , Feminino , Fibroma/diagnóstico por imagem , Fibroma/cirurgia , Mucosa Gástrica/patologia , Mucosa Gástrica/cirurgia , Gastroscopia/métodos , Humanos , Pessoa de Meia-Idade , Neoplasias Gástricas/diagnóstico por imagem , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Resultado do TratamentoRESUMO
Introduction: A multicenter prospective cohort study studied patients admitted to the intensive care unit (ICU) by coronavirus-19 (COVID-19) with respiratory involvement. We observed the number of occasions in which the value of procalcitonin (PCT) was higher than 0.5 ng/ml. Objective: Evaluation of PCT elevation and influence on mortality in patients admitted to the ICU for COVID-19 with respiratory involvement. Measurements and main results: We studied 201 patients. On the day of admission, acute physiology and chronic health evaluation (APACHE)-II was 13 (10-16) points. In-hospital mortality was 36.8%. During ICU stay, 104 patients presented 1 or more episodes of PCT elevation and 60 (57.7%) died and 97 patients did not present any episodes of PCT elevation and only 14 (14.4%) died (p < 0.001). Multivariable analysis showed that mortality was associated with APACHE-II: [odds ratio (OR): 1.13 (1.04-1.23)], acute kidney injury [OR: 2.21 (1.1-4.42)] and with the presentation of one or more episodes of escalating PCT: [OR: 5.07 (2.44-10.53)]. Of 71 patients who died, 59.2% had an elevated PCT value on the last day, and of the 124 patients who survived, only 3.2% had an elevated PCT value on the last day (p < 0.001). On the last day of the ICU stay, the sequential organ failure assessment (SOFA) score of those who died was 9 (6-11) and 1 (0-2) points in survivors (p < 0.001). Of the 42 patients who died and in whom PCT was elevated on the last day, 71.4% were considered to have a mainly non-respiratory cause of death. Conclusion: In patients admitted to the ICU by COVID-19 with respiratory involvement, numerous episodes of PCT elevation are observed, related to mortality. PCT was elevated on the last day in more than half of the patients who died. Serial assessment of procalcitonin in these patients is useful because it alerts to situations of high risk of death. This may be useful in the future to improve the treatment and prognosis of these patients.