Development and validation of a faecal immunochemical test-based model in the work-up of patients with iron deficiency anaemia.

Objective: In patients with iron deficiency anaemia (IDA), the diagnostic yield of gastroscopy and colonoscopy (bidirectional endoscopy) in detecting neoplastic lesions is low. This study aimed to develop and validate a faecal immunochemical test (FIT)-based model to optimise the work-up of patients with IDA. Methods: Outpatients with IDA were enrolled in a prospective, multicentre study from April 2016 to October 2019. One FIT was performed before bidirectional endoscopy. Significant gastrointestinal lesions were recorded and a combined model developed with variables that were independently associated with significant colorectal lesions in the multivariate analysis. The model cut-off was selected to provide a sensitivity of at least 95% for colorectal cancer (CRC) detection, and its performance was compared to different FIT cut-offs. The data set was randomly split into two groups (developed and validation cohorts). An online calculator was developed for clinical application. Results: The development and validation cohorts included 373 and 160 patients, respectively. The developed model included FIT value, age, and sex. In the development and validation cohorts, a model cut-off of 0.1375 provided a negative predictive value of 98.1 and 96.7% for CRC and 90.7 and 88.3% for significant colorectal lesions, respectively. This combined model reduced the rate of missed significant colorectal lesions compared to FIT alone and could have avoided more than one-fourth of colonoscopies. Conclusion: The FIT-based combined model developed in this study may serve as a useful diagnostic tool to triage IDA patients for early endoscopic referral, resulting in considerable reduction of unnecessary colonoscopies.

An artificial intelligence-generated model predicts 90-day survival in alcohol-associated hepatitis: A global cohort study.

BACKGROUND AND AIMS: Alcohol-associated hepatitis (AH) poses significant short-term mortality. Existing prognostic models lack precision for 90-day mortality. Utilizing artificial intelligence in a global cohort, we sought to derive and validate an enhanced prognostic model. APPROACH AND RESULTS: The Global AlcHep initiative, a retrospective study across 23 centers in 12 countries, enrolled patients with AH per National Institute for Alcohol Abuse and Alcoholism criteria. Centers were partitioned into derivation (11 centers, 860 patients) and validation cohorts (12 centers, 859 patients). Focusing on 30 and 90-day postadmission mortality, 3 artificial intelligence algorithms (Random Forest, Gradient Boosting Machines, and eXtreme Gradient Boosting) informed an ensemble model, subsequently refined through Bayesian updating, integrating the derivation cohort's average 90-day mortality with each center's approximate mortality rate to produce posttest probabilities. The ALCoholic Hepatitis Artificial INtelligence Ensemble score integrated age, gender, cirrhosis, and 9 laboratory values, with center-specific mortality rates. Mortality was 18.7% (30 d) and 27.9% (90 d) in the derivation cohort versus 21.7% and 32.5% in the validation cohort. Validation cohort 30 and 90-day AUCs were 0.811 (0.779-0.844) and 0.799 (0.769-0.830), significantly surpassing legacy models like Maddrey's Discriminant Function, Model for End-Stage Liver Disease variations, age-serum bilirubin-international normalized ratio-serum Creatinine score, Glasgow, and modified Glasgow Scores ( p < 0.001). ALCoholic Hepatitis Artificial INtelligence Ensemble score also showcased superior calibration against MELD and its variants. Steroid use improved 30-day survival for those with an ALCoholic Hepatitis Artificial INtelligence Ensemble score > 0.20 in both derivation and validation cohorts. CONCLUSIONS: Harnessing artificial intelligence within a global consortium, we pioneered a scoring system excelling over traditional models for 30 and 90-day AH mortality predictions. Beneficial for clinical trials, steroid therapy, and transplant indications, it's accessible at: https://aihepatology.shinyapps.io/ALCHAIN/ .

Asynchronous electronic consultation between primary care and specialized care proved effective for continuum of care for viraemic hepatitis C patients / La consulta electrónica asíncrona entre atención primaria y atención especializada resultó eficaz para la continuidad de la atención a los pacientes con hepatitis C virémica

Introduction: It has been proposed that primary care diagnose and treat hepatitis C virus (HCV) infection. However, a care circuit between primary and specialized care based on electronic consultation (EC) can be just as efficient in the micro-elimination of HCV. It is proposed to study characteristics and predictive factors of continuity of care in a circuit between primary and specialized care. Methods: From February/2018 to December/2019, all EC between primary and specialized care were evaluated and those due to HCV were identified. Variables for regression analysis and to identify predictors of completing the care cascade were recorded. Results: From 8098 EC, 138 were performed by 89 (29%) general practitioners over 118 patients (median 50.8 years; 74.6% men) and were related to HCV (1.9%). Ninety-two patients (78%) were diagnosed>6 months ago, and 26.3% met criteria for late presentation. Overall, 105 patients required assessment by the hepatologist, 82% (n=86) presented for the appointment, of which 67.6% (n=71) were viraemic, 98.6% of known. Finally, 61.9% (n=65) started treatment. Late-presenting status was identified as an independent predictor to complete the care cascade (OR 1.93, CI 1.71–1.99, p<0.001). Conclusion: Communication pathway between Primary and Specialized Care based on EC is effective in avoiding significant losses of viraemic patients. However, the referral rate is very low, high in late-stage diagnoses, heterogeneous, and low in new diagnoses. Therefore, early detection strategies for HCV infection in primary care are urgently needed.(AU)

Introducción: Se ha propuesto que atención primaria diagnostique y trate la infección por virus de la hepatitis C (VHC). Sin embargo, un circuito asistencial entre atención primaria y especializada basado en la consulta electrónica (CE) puede ser igual de eficiente en la microeliminación del VHC. Se propone estudiar características y factores predictivos de la continuidad asistencial en un circuito entre atención primaria y especializada. Métodos: Desde febrero/2018 y diciembre/2019 se evaluaron todas las CE entre atención primaria y especializada, y se identificaron aquellas por VHC. Se registraron variables para análisis de regresión e identificar factores predictores de completar cascada de atención. Resultados: De un total de 8.098 CE, 138 realizadas por 89 (29%) médicos generales de 118 pacientes (mediana de 50,8 años; 74,6% varones) fueron por VHC (1,9%). Noventa y dos pacientes (78%) fueron diagnosticados hace más de 6 meses), y el 26,3% cumplía criterios de presentación tardía. En total, 105 pacientes requirieron valoración por el hepatólogo. El 82% (n=86) se presentaron a la cita, de los cuales el 67,6% (n=71) eran virémicos, el 98,6% de los conocidos. Finalmente, el 61,9% (n=65) inició tratamiento. El estado de presentación tardía se identificó como un factor predictivo independiente para completar la cascada de atención (OR: 1,93; IC 95%: 1,71-1,99; p<0,001). Conclusión: La comunicación entre atención primaria y especializada basada en la CE es eficaz para evitar pérdidas significativas de pacientes virémicos. Sin embargo, la tasa de derivación es muy baja, elevada en diagnósticos en fase tardía, heterogénea y escasa en nuevos diagnósticos. Por tanto, se necesitan con urgencia, estrategias de detección precoz de infección por VHC en atención primaria.(AU)

Mayor ralentización en el diagnóstico de la hepatitis C en estrategias descentralizas y en grupos de alta prevalencia durante la pandemia por COVID-19 / A slowdown of hepatitis C diagnosis in high-prevalence groups and with decentralized diagnostic strategies during the COVID-19 pandemic

Introducción: la pandemia por COVID-19 ha tenido una importante repercusión en el diagnóstico del virus de la hepatitis C (VHC) obstaculizando el camino hacia su eliminación,aunque es probable que de forma desigual según la estrategia diagnóstica y el grupo de riesgo.Métodos: se registraron las solicitudes de anticuerpos/ARNpor venopunción en hospital y Atención Primaria (centralizado) y mediante venopunción o test de gota de sangre seca enprisión y centros de drogodependencias remitidos para procesamiento central (descentralizado integrado) durante un añoantes y después del inicio de la alerta sanitaria por COVID-19.Resultados: se registró un total de 20.600 determinaciones(51 % varones, 47,9 ± 15,8 años) realizadas el 96,5 % deforma centralizada y el 3,5 % de forma descentralizada,con una tasa de infección activa del 0,2 % y el 2,3 %(p < 0,001), respectivamente. Durante el periodo de pandemia, comparado con el de prepandemia, hubo un descensoen el número de determinaciones del 31,3 %, que fue mayor en diagnóstico descentralizado comparado con centralizado (60 vs. 30 %, p < 0,001). Además, se contabilizó undescenso en el cribado del 31,5 % y en el diagnóstico denuevos casos de infección activa, del 18,2 %, con mayordescenso en el diagnóstico descentralizado comparado concentralizado.Conclusiones: durante la pandemia por COVID-19 se ha objetivado un descenso en el esfuerzo diagnóstico del VHC,especialmente en estrategias descentralizadas y con mayorprevalencia de infección. Estos resultados sugieren un retraso diagnóstico que dificultará alcanzar la meta de eliminación en nuestro país en 2023, por lo que urge reactivarestrategias principalmente en grupos prioritarios. (AU)

El paciente tratado de hepatitis C como fuente potencial de derivación de nuevos casos / Hepatitis C-treated patients as a potential source for referral of new cases

Introducción: Los antivirales de acción directa (AAD) representan una oportunidad para la eliminación del virus de la hepatitis C (VHC) por su simplicidad. No obstante, se precisan estrategias dirigidas a diagnosticar nuevos pacientes y a atraer diagnosticados sin evaluación. En este sentido, los pacientes con otras enfermedades virales crónicas que reciben un trato satisfactorio promueven la derivación a consulta de otros pacientes. Nuestro objetivo fue evaluar en qué grado los pacientes que han sido tratados con AAD recomendarían seguimiento y tratamiento a otros pacientes, así como las características de los pacientes que influyen en esta decisión. Pacientes y métodos: Se incluyó a 202 pacientes infectados por VHC tratados con AAD. Se les preguntó sobre conocimiento de otros infectados y deseos de compartir su experiencia, y se realizó encuesta de satisfacción general (cuestionario Baker) y específica de VHC (cuestionario HCVTSat). Además, se registraron variables demográficas, socioeconómicas y de la infección por VHC. Resultados: A pesar de que el 54,4% de los pacientes refería conocer a otros afectados, un 34,2% no estaría totalmente de acuerdo en compartir su experiencia global en consulta. El análisis de satisfacción general y específica mostró que los pacientes que compartirían su experiencia referían una percepción de mayor atención por parte del especialista (4,7±0,4 vs. 4,3±0,6, p=0,001), tenían más información sobre el tratamiento (4,6±0,5 vs. 4,0±0,7, p=0,001) y mayor apoyo social (4,5±0,7 vs. 4,0±0,8, p=0,001). Conclusiones: La percepción por parte del paciente tratado sobre satisfacción general del proceso de atención sanitaria e información de beneficios influye en el grado de recomendación a otros infectados. Se debe prestar atención y mejorar el conocimiento del tratamiento y la percepción de mejora en salud de los pacientes tratados, ya que puede contribuir a aumentar las derivaciones a consulta especializada.(AU)

Introduction: Direct-acting antivirals (DAAs) are an opportunity for hepatitis C virus (HCV) elimination. Strategies are needed to diagnose new patients and to attract those diagnosed without evaluation. Patients with other chronic viral diseases who receive satisfactory treatment promote referral of other patients for evaluation. Our aim was to evaluate whether patients who have been treated with DAAs would recommend follow-up and treatment to other patients as well as the characteristics that influence this decision. Patients and methods: Two-hundred and 2HCV-infected patients treated with DAAs were included. Patients were asked about whether they knew other infected people and their willingness to share their experience. A general satisfaction survey and a specific HCV satisfaction survey were carried out. Demographic, socioeconomic and HCV infection variables were recorded. Results: Despite the fact that 54.4% of the patients reported knowing others infected, 34.2% would not fully agree to share their experience. The analysis of general and specific satisfaction showed that patients who shared their experience mentioned a perception of greater care from the specialist (4.7±0.4 vs. 4.3±0.6, P=.001) and had more information on treatment expectations (4.6±0.5 vs. 4.0±0.7, P=.001) and social support (4.5±0.7 vs. 4.0±0.8, P=.001). Conclusions: The perception by treated patients of general satisfaction with the healthcare process and information about benefits influences the degree of recommendation to other infected people. Knowledge about treatment and perception of improvement in health of treated patients should be enhanced as it can contribute to increasing referrals to specialized consultation.(AU)

Evaluación de la precisión diagnóstica del sistema Cobas 6800 para la detección de los niveles de viremia del virus de la hepatitis C a partir de muestras de gotas de sangre seca en papel de filtro / Diagnostic test accuracy of the cobas 6800 system for detection of hepatitis c virus viraemia levels from dried blood spots

INTRODUCCIÓN: La infección por el virus de la hepatitis C (VHC) es curable en la mayoría de los casos tratados, siendo actualmente una prioridad diagnosticar a todos los infectados. Para ello se necesitan, especialmente en poblaciones de difícil diagnóstico, métodos diagnósticos simples, como es el uso de muestras de gotas de sangre seca (GSS), como alternativa a la extracción de sangre mediante venopunción. Como paso previo para poder implantarlo como método diagnóstico de detección de pacientes con VHC dentro del Sistema Nacional de Salud se precisa evaluar la precisión diagnóstica en equipos de uso hospitalario habitual. METODOLOGÍA: Se evaluaron in vitro y en ensayo de campo muestras de GSS tras ser procesadas en el equipo Cobas 6800, estableciendo una correlación con el resultado obtenido con sangre completa. Se realizaron pruebas de correlación y de variabilidad intraensayo de la determinación con sangre completa y GSS para cuantificar la carga viral del VHC. RESULTADOS: En muestras de sangre completa, con una carga viral ≥ 3 log10UI/ml, se detectó viremia en todos los casos cuando se utilizaron eluciones de 2 gotas (94 detecciones de 95 eluciones de círculos). El rendimiento con 2 gotas fue menor en muestras con < 3 log 10UI/ml (7/20). La correlación entre la viremia determinada con sangre completa y con GSS fue excelente (máximo con 2 gotas, r2 = 0,906; p < 0,001), con un coeficiente de variación del 0,05%. En práctica clínica habitual con muestras de pacientes analizados (n = 61) se obtuvo igualmente una excelente precisión diagnóstica. CONCLUSIÓN: La determinación de la carga viral mediante GSS, procesando al menos 2 gotas, es un método fiable para el diagnóstico de infección por el VHC. La estandarización del método es factible en nuestro equipo Cobas 6800 local, y nuestros resultados respaldan la incorporación de esta herramienta diagnóstica al Sistema Nacional de Salud para facilitar planes de microeliminación

INTRODUCTION: Because hepatitis C virus (HCV) infection is curable in the majority of cases, the diagnosis of all infected patients has become a priority. In difficult-to-diagnose populations, simpler diagnostic methods are required such as the use of dried blood spots (DBS) as an alternative to blood drawn by venipuncture (VP). Before being able to include it as a HCV diagnostic detection method within the Spanish National Health System, the diagnostic accuracy of standard hospital equipment must be evaluated. METHODOLOGY: DBS samples were evaluated in vitro and in a field test after being processed in the Cobas 6800 system, establishing a correlation with the result by VP. Performance with different viral loads and intra-assay variability was compared. RESULTS: In samples with a viral load of>3 log10IU/ml, viraemia was detected in all cases when at least two blood spot elutions were used (94 detections out of 95 spot elutions). The performance with 2 spots was lower in samples with<3 log10IU/ml (7/20). Correlation between VP and DBS viraemia was excellent (maximum with 2 spots, r2=0.906, P<.001) with a coefficient of variation of 0.05%. In routine clinical practice with specimens from screened subjects (n=61), excellent diagnostic accuracy was also observed. CONCLUSION: Viral load detection using DBS of at least two spots is a reliable method for HCV diagnosis. The standardisation of the method is feasible and our results support the incorporation of this diagnostic tool in Spain's Public Health System

Sexual behaviour and poor hygiene are related to recent hepatitis a virus community outbreaks

OBJECTIVES: there has been a global increase in the incidence of hepatitis A infection. The aim of this study was to examine the characteristics of the increase in our region and the degree of adherence to the recommended hygienic measures after discharge from hospital. METHODS: demographic, clinical and biochemical variables were collected from patients with acute hepatitis A in our health area. The patients were grouped as follows: January 2010 to December 2016 (historical cohort) and January 2017 to October 2017 (recent cohort). A phylogenetic analysis was also performed in the recent cohort. One month after discharge, bacterial growth was evaluated by a culture of the dominant hand imprint and were compared with a control group. RESULTS: a total of 110 cases were registered with a median age of 36.3 years (range 3-89) and 77.3 % were male. The incidence was 0.82/100,000 inhabitants/year and 22.75/100,000 inhabitants/year in the historical and recent cohorts, respectively. Patients in the recent cohort were more frequently male (52.6 % vs. 82.4 %, p = 0.008) and younger (51.7 [3-89] vs. 33.4 [4-74] years, p < 0.001). In addition, 63.8 % of the recent cohort were men who had sex with other men and had unsafe sexual practices (37.5 %). Phylogenetic analysis showed a predominance of genotype A and a high frequency of the VRD 521-2016 sequence. A higher growth of enterobacteria was observed in patients with hepatitis A compared to the control group (7.3 % vs. 1.2 %, p = 0.005), despite specific hygienic measures given at discharge. CONCLUSIONS: a recent outbreak of hepatitis A in our area was related with gender, younger age and sexual practices. Hepatitis A infected subjects showed a poor adherence to hygienic measures. Our data suggests the need for policies that encourage preventive actions, particularly vaccination in this high-risk group

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