Controles de salud durante la pandemia e impacto clínico del COVID-19 en niños con enfermedad neuromuscular / Health checkups during the pandemic and clinical impact of COVID-19 in children with neuromuscular disease

Introducción. Los niños con enfermedad neuromuscular (ENM) requieren cuidados crónicos de salud (CCS) y podrían presentar COVID-19 grave. Objetivos. Describir CCS para niños con ENM durante la pandemia y evolución del COVID-19 en este grupo. Población y métodos. Cohorte prospectiva unicéntrica. Se incluyeron pacientes de 2-18 años, con ≥ 1 año de seguimiento previo a la pandemia. Se recolectaron variables demográficas, relativas a los CCS y al COVID-19 mediante historias clínicas y encuestas telefónicas. Resultados. Se incluyeron 226 pacientes; el 71 % varones, mediana de edad 11,3 años. Presentaban distrofias musculares (55,7 %) y atrofia muscular espinal (23 %). Comparando el primer año de pandemia con el previo, el 30 % no realizó controles médicos y el 25 % no realizó kinesioterapia. Otros disminuyeron la frecuencia. Hubo 52 casos de COVID-19. Fueron sintomáticos el 82 %: el 88,4 % leves/moderados y el 11,6 % graves. No hubo fallecidos. Conclusiones. La pandemia impactó negativamente en los CCS y los casos de COVID-19 fueron mayormente leves.

Introduction. Children with neuromuscular disease (NMD) require chronic health care (CHC) and may develop severe COVID-19. Objectives. To describe CHC for children with NMD during the pandemic and the course of COVID-19 in this group. Population and methods. Prospective, single-center cohort. Patients aged 2 to 18 years with ≥ 1 year of follow-up prior to the pandemic were included. Demographic variables in relation to CHC and COVID-19 were collected from medical records and via telephone surveys. Results. A total of 226 patients with a median age of 11.3 years were included; 71% were males. They had muscular dystrophy (55.7%) and spinal muscular atrophy (23%). When comparing the first year of the pandemic with the previous year, 30% did not have a health checkup and 25% did not receive kinesiotherapy. Others did, but with a lower frequency. A total of 52 COVID-19 cases were reported; 82% were symptomatic: 88.4% were mild/moderate and 11.6%, severe. No patient died. Conclusions. The pandemic had a negative impact on CHC, and COVID-19 cases were mostly mild.

Congenital hyperinsulinism and surgical outcome in a single tertiary center in Brazil

Abstract Objective: Congenital hyperinsulinism (CHI) is a heterogeneous genetic disease characterized by increased insulin secretion and causes persistent hypoglycemia in neonates and infants due to dysregulation of insulin secretion by pancreatic β cells. Babies with severe hypoglycemia and for whom medical treatment has been ineffective usually require surgical treatment with near-total pancreatectomy. To evaluate the clinical and surgical aspects affecting survival outcomes in babies diagnosed with CHI in a single tertiary care center. Methods: Retrospective Cohort study involving a single university tertiary center for the treatment of CHI. The authors study the demographics, clinical, laboratory, and surgical outcomes of this casuistic. Results: 61 % were female, 39 % male, Birth weight: 3576 g (±313); Age of onset of symptoms: from the 2nd hour of life to 28 days; Time between diagnosis and surgery ranged between 10 and 60 days; Medical clinical treatment, all patients received glucose solution with a continuous glucose infusion and diazoxide. 81 % of the patients used corticosteroids, 77 %. thiazide, 72 % octreotide, 27 % nifedipine; Neurological sequelae during development and growth: 54 % had some degree of delay in neuropsychomotor development, 27 % obesity. Surgery was performed open in 6 and 12 minimally invasive surgery (MIS). Histopathology: 2 focal and 16 diffuse, Length of stay (days) was lower in MIS (p < 0.05). Survival was 100 %. Conclusions: CHI is a rare and difficult-to-manage tumor that must be performed in a multidisciplinary and tertiary center. Most surgical results are good and the laparoscopic approach to disease has been the best choice for patients.

Persistencia de signos y síntomas a los 6 meses posinfección por chikungunya en pacientes de un hospital público en Paraguay

Introducción: El virus chikungunya (CHIKV) causa una enfermedad con manifestaciones agudas bien documentadas, pero existen pocos datos sobre la persistencia de síntomas y secuelas a largo plazo. Objetivos: Evaluar la persistencia de signos, síntomas y factores asociados en pacientes con infección por CHIKV en un seguimiento de 6 meses posinfección. Materiales y métodos: Estudio de cohorte ambispectivo que incluyó casos confirmados de CHIKV notificados en abril de 2023 en Coronel Oviedo, Paraguay. Se realizaron entrevistas al mes, a los tres meses y a los 6 meses posinfección. Se analizaron características demográficas, comorbilidades, manifestaciones reumáticas y sintomáticas. Resultados: Ingresaron 333 participantes, completando seguimiento a 6 meses 170 pacientes. A los 6 meses persistieron: dolor de espalda (61.2%), artritis (57.1%), cefalea (54.1%), fatiga (51.2%), mialgia (49.4%), debilidad (47.6%), depresión (45.9%) y artralgia (45.9%). La persistencia de artritis (OR 7.54; p=0.008) y mialgia (OR 3.24; p=0.031) a 6 meses fue mayor en el grupo de 36-45 años. Conclusiones: Alta persistencia de síntomas musculoesqueléticos y fatiga hasta 6 meses posinfección, con tendencia decreciente, pero exacerbación de depresión. Edad entre 36-45 años asociada a mayor persistencia. Se requieren protocolos de seguimiento integral, investigar mecanismos fisiopatológicos y fortalecer prevención, dado el impacto individual y socioeconómico de la enfermedad.

Introduction: Chikungunya virus (CHIKV) causes a disease with well-documented acute manifestations, but there is limited data on the persistence of symptoms and long-term sequelae. Objectives: To evaluate the persistence of signs, symptoms, and associated factors in patients with CHIKV infection during a 6-month post-infection follow-up. Material and Methods: An ambispective cohort study that included confirmed cases of CHIKV reported in April 2023 in Coronel Oviedo, Paraguay. Interviews were conducted at 1, 3 and 6 months post-infection. Demographic characteristics, comorbidities, rheumatic, and symptomatic manifestations were analyzed. Results: 333 participants were enrolled, with 170 patients completing the 6-month follow-up. At 6 months, the following symptoms persisted: back pain (61.2%), arthritis (57.1%), headache (54.1%), fatigue (51.2%), myalgia (49.4%), weakness (47.6%), depression (45.9%), and arthralgia (45.9%). The persistence of arthritis (OR 7.54, p=0.008) and myalgia (OR 3.24, p=0.031) at 6 months was higher in the 36-45 age group. Conclusions: High persistence of musculoskeletal symptoms and fatigue up to 6 months post-infection, with a decreasing trend but exacerbation of depression. Age between 36-45 years was associated with greater persistence. Comprehensive follow-up protocols, investigation of pathophysiological mechanisms, and strengthening prevention are required, given the individual and socioeconomic impact of the disease.

Guía de práctica clínica para el tratamiento y seguimiento de personas con cáncer diferenciado de tiroides. Parte I: Vigilancia activa

Introducción: El cáncer de tiroides es una enfermedad frecuente en el mundo, con mayor prevalencia del tipo diferenciado. El diagnóstico temprano y manejo pertinente, individualizado y adaptable puede mejorar su pronóstico. Objetivo: Generar recomendaciones basadas en evidencia sobre el tratamiento y seguimiento de personas adultas con cáncer diferenciado de tiroides (CDT). Metodología: Guía de práctica clínica (GPC) a partir de revisión sistemática de literatura (RSL) y consenso de expertos clínicos. El grupo desarrollador definió el alcance y cuatro preguntas que se resolvieron a través de revisión de evidencia de GPC existentes, RSL, estudios primarios publicadas en español o inglés en diferentes fuentes de información desde 2013. Las preguntas de investigación fueron: 1. ¿Cuáles son las indicaciones de la vigilancia activa?, ¿cómo realizarla?, ¿cuándo y con que periodicidad realizarla? 2. ¿Cuál es el tratamiento y su indicación en pacientes con nódulos tiroideos sospechosos de cáncer? 3. ¿Cómo y cuándo realizar seguimiento de pacientes con CDT de acuerdo con el riesgo dinámico? 4. ¿Cuál es el manejo actual de los pacientes iodo refractarios? Se propusieron recomendaciones basadas en la evidencia, y analizadas y discutidas por el colectivo experto en sesiones asincrónicas. Se evalúo la calidad de la evidencia y las recomendaciones fueron gradadas en fuerte o condicional y a favor o en contra a partir del análisis de la calidad de la evidencia, contexto de implementación (disponibilidad e implementación) y la experticia clínica. En el presente documento se desarrollada la primera pregunta, referente a vigilancia activa. Resultados: 86 recomendaciones fueron propuestas y acordadas por el grupo desarrollador, categorizadas en tratamiento y seguimiento para resolver las preguntas planteadas. 10 de las recomendaciones corresponden a vigilancia activa y se incluyen en el presente documento. Recomendaciones claves incluyen, brindar información completa y oportuna a pacientes, conformación de equipos multidisciplinarios, análisis individualizado del paciente para la decisión de tratamiento, estadificación rutinaria de riesgo dinámico para evaluar la respuesta al tratamiento y ajustarlo, minimización de procedimientos fútiles o que aportan poco a la supervivencia y calidad de vida de los pacientes. Conclusión: Se presentan recomendaciones que esperan incidir en la estandarización de la práctica clínica cotidiana de pacientes con CDT y mejores resultados en salud.

Introduction: Thyroid cancer is a common disease in the world, with a higher prevalence of the differentiated type. Early diagnosis individualized and adaptive management can improve prognosis. Objective: Generate evidence-based recommendations on the treatment and follow-up of adults with differentiated thyroid carcinoma (DTC). Methodology: Clinical practice guideline (CPG) based on systematic literature review (RSL) and consensus of clinical experts. The development group defined the range and four questions that were resolved through a review of evidence from existing CPGs, RSLs, primary studies published in Spanish or English in various sources of information since 2013. The research questions were: 1. What are the indications for active surveillance? How to carry it out? When and how often to carry it out? 2. What is the treatment and its indication in patients with thyroid nodules suspicious for cancer? 3. How and when to follow up patients with CDT according to dynamic risk? 4. What is the current management of iodine refractory patients? Evidence-based recommendations analyzed and discussed by the expert group in asynchronous sessions were proposed. The quality of the evidence was evaluated, and the recommendations were graded as strong or conditional and in favor or against based on the analysis of the quality of the evidence, implementation context (availability and implementation) and clinical expertise. In this document, is developed the first question, referring to active surveillance. Results: 86 recommendations were proposed and agreed upon by the development group, categorized into treatment and follow-up to solve the questions raised. 10 of the recommendations correspond to active surveillance and are included in this document. Key recommendations include providing complete and timely information to patients, develop of multidisciplinary teams, individualized patient analysis for treatment decisions, routine dynamic risk staging to evaluate response to treatment and adjust it, minimization of futile procedures or that contribute little to the survival and quality of life of patients. Conclusion: Recommendations are presented that longs to influence the standardization of the daily clinical practice of patients with DTC and better health outcomes.

Orientaciones para el manejo ambulatorio de adultos que viven con VIH en Chile / Guidelines for the primary care of adult people living with HIV in Chile

El enfrentamiento de las personas que viven con VIH es amplio y requiere dedicación en múltiples dimensiones, más allá de la terapia antirretroviral. Estas recomendaciones abordan el manejo desde el diagnóstico, primera visita, seguimiento, manejo de comorbilidades infecciosas y no infecciosas, tamizaje de neoplasias, profilaxis antimicrobiana y vacunas, entre otras.

Management of people living with HIV is broad and multiple dimensions must be considered, beyond antiretroviral therapy. These recommendations include management from diagnosis, first visit, patient follow-up, infectious and non-infectious comorbidities, malignancies screening, antimicrobial and immunizations prophylaxis, among others.

Seguimiento de niños con diagnóstico de asma grave antes y durante la pandemia por COVID-19 / Follow-up of children diagnosed with severe asthma before and during the COVID-19 pandemic

En la pandemia por COVID-19 se exploraron estrategias de atención para garantizar el seguimiento de niños con asma grave. Estudio prospectivo, observacional, comparativo. Se incluyeron pacientes del programa de asma grave de un hospital pediátrico de tercer nivel (n 74). Se evaluó el grado de control, exacerbaciones y hospitalizaciones durante un período presencial (PP), marzo 2019-2020, y uno virtual (PV), abril 2020-2021. En el PP, se incluyeron 74 pacientes vs. 68 (92 %) del PV. En el PP, el 68 % (46) de los pacientes presentaron exacerbaciones vs. el 46 % (31) de los pacientes en el PV (p 0,003). En el PP, se registraron 135 exacerbaciones totales vs. 79 en el PV (p 0,001); hubo una reducción del 41 %. En el PP, el 47 % (32) de los pacientes tuvieron exacerbaciones graves vs. el 32 % (22) de los pacientes en el PV (p 0,048). Hubo 91 exacerbaciones graves en el PP vs. 49 en el PV (p 0,029), reducción del 46 %. No hubo diferencias en las hospitalizaciones (PP 10, PV 6; p 0,9). La telemedicina fue efectiva para el seguimiento de pacientes con asma grave

During the COVID-19 pandemic, health care strategies were explored to ensure the follow-up of children with severe asthma. This was a prospective, observational, and comparative study. Patients in the severe asthma program of a tertiary care children's hospital were included (n: 74). The extent of control, exacerbations, and hospitalizations during an in-person period (IPP) (March 2019­2020) and an online period (OP) (April 2020­2021) was assessed. A total of 74 patients were enrolled in the IPP compared to 68 (92%) in the OP. During the IPP, 68% (46) of patients had exacerbations versus 46% (31) during the OP (p = 0.003). During the IPP, 135 total exacerbations were recorded compared to 79 during the OP (p = 0.001); this accounted for a 41% reduction. During the IPP, 47% (32) of patients had severe exacerbations versus 32% (22) during the OP (p = 0.048). A total of 91 severe exacerbations were recorded during the IPP compared to 49 during the OP (p = 0.029); the reduction was 46%. No differences were observed in terms of hospitalization (IPP: 10, OP: 6; p = 0,9). Telemedicine was effective for the follow-up of patients with severe asthma.

Seguimiento Funcional hasta Seis Meses después de Sobrevivir a Cuidados Intensivos: Lecciones aprendidas de un Estudio Chileno Multicéntrico / Functional follow-up six months after surviving intensive care: lessons learned from a Chilean multicenter study

Introducción. Las tasas de retención en los estudios de seguimiento oscilan entre el 32 y 100%, demostrando el desafío que implica realizar estudios longitudinales de sobrevivientes de la unidad de cuidados intensivos (UCI). Objetivo. Identificar las estrategias implementadas y lecciones aprendidas en un estudio prospectivo multicéntrico de seguimiento de sobrevivientes de la UCI durante la pandemia. Métodos. Estudio post-hoc de las lecciones aprendidas mediante encuestas y entrevistas dirigidas a explorar la experiencia de los investigadores y coordinadores del estudio IMPACCT COVID-19, realizado en siete centros chilenos entre octubre 2020 y abril 2021 evaluando el síndrome post-cuidados intensivos de sobrevivientes hasta seis meses después. Resultados. Identificamos ocho lecciones: 1) selección de instrumentos de medición, 2) identificación de centros participantes, 3) aprobación del estudio, 4) financiamiento, 5) capacitación de evaluadores, 6) coordinación/aseguramiento de calidad, 7) reclutamiento y 8) seguimiento de pacientes. Incluso durante el primer año de pandemia, reclutamos 252 pacientes a una tasa de 1,4 pacientes/día con una retención del 48% a los 6 meses de seguimiento. El uso de redes académicas existentes y las estrategias de comunicación entre investigadores, coordinadores y evaluadores fueron aspectos positivos; mientras que la fidelización con evaluadores al egreso de la UCI y con pacientes durante el seguimiento son aspectos que deberían considerarse en futuros estudios. Conclusiones. Se evaluaron más de 250 pacientes en seis meses durante la pandemia, con tasas de retención post UCI acorde a la literatura. Futuros estudios debiesen optimizar los procesos de medición y de seguimiento para minimizar la pérdida de pacientes.

Background. Retention rates of follow-up studies range from 32 to 100%, demonstrating the challenge to conduct longitudinal studies of intensive care unit (ICU) survivors. Objective. To identify the strategies implemented and lessons learned in a multicenter prospective follow-up study of ICU survivors during pandemic times. Methods. Post-hoc study of lessons learned through surveys and interviews aimed at exploring the experience of the researchers and coordinators of the IMPACCT COVID-19 study. The original study was performed in seven Chilean sites between October 2020 and April 2021 evaluating the post-intensive care syndrome of survivors up to six-month follow-up. Results. We identified eight lessons: 1) selection of measurement instruments, 2) identification of participating sites, 3) Study approval, 4) funding, 5) evaluators training, 6) coordination/quality assurance, 7) recruitment, and 8) patient follow-up. Even during the first year of the pandemic, we recruited 252 patients at a rate of 1.4 patients/day with a retention rate of 48% at 6 months of follow-up. The use of existing academic networks and communication strategies between researchers, coordinators and evaluators were positive aspects; while evaluators fidelity at ICU discharge and patient engagement during follow-up are aspects should be considered. Conclusions. More than 250 patients were evaluated in six months during the pandemic, with post-ICU retention rates consistent with the literature. Future studies should optimize measurement and monitoring processes to minimize patient atrition.

Calidad asistencial y seguimiento de los pacientes operados por cáncer colorrectal en un Hospital de Paysandú, Uruguay / Quality of care and follow-up of patients operated on forcolorectal cancer at the Paysandú Hospital, Uruguay

Introducción: el cáncer colorrectal (CCR) es la segunda causa de muerte dentro de las enfermedades neoplásicas. El pronóstico individual está signado por el estadio de la enfermedad al momento del diagnóstico y la posibilidad de realizar un tratamiento curativo. Este también depende de la estratificación post quirúrgica y de la aparición de complicaciones ulteriores. El objetivo del seguimiento es diagnosticar la recidiva en un estadio potencialmente curable y detectar otros cánceres primarios. Objetivo: realizar una valoración de la calidad de la cirugía colorrectal y el seguimiento de los pacientes operados de CCR en nuestro hospital. Diseño: estudio descriptivo, observacional, retrospectivo. Material y métodos: se analizaron todos los pacientes con CCR operados en el servicio de cirugía del Hospital de Paysandú entre enero de 2017 y diciembre de 2020. Se describen diversas variables que influyen en la calidad quirúrgica y se analizan las relacionadas al seguimiento post operatorio dividiendo a los pacientes en 3 grupos, seguimiento completo, perdidos y sin datos de seguimiento. Resultados: se incluyeron 39 pacientes, con una edad media de 68 años. El 28% se diagnosticaron en estadio IV, con porcentajes bajos en estadios tempranos. Hubo 57% de cirugías de urgencia y 43% electivas. La causa más frecuente de urgencia fue la oclusión intestinal (36,6%). La tasa de dehiscencia anastomótica fue 16,6% y la de mortalidad 15,3%. Solo el 33% de los pacientes tuvieron seguimiento completo. Conclusión: existe un déficit en la atención y el seguimiento de los pacientes operados por CCR en nuestro hospital. Se impone la creación de un equipo específico en el área de coloproctología, así como un protocolo de seguimiento unificado para mejorar estos resultados. (AU)

Introduction: colorectal cancer (CRC) is the second cause of death among neoplastic diseases. The individual prognosis is determined by the stage of the disease at the time of diagnosis and the possibility of curative treatment. This also depends on the postsurgical stratification and the appearance of subsequent complications. The goal of follow-up is to diagnose recurrence at a potentially curable stage and detect other primary cancers. Objective: to carry out an evaluation of the quality of colorectal surgery and the follow-up of patients operated on for CRC in our hospital. Design: descriptive, retrospective observational study. Material and methods: all patients with CRC operated on in the surgery service of the Paysandú Hospital between January 2017 and December 2020 were analyzed. Variables that influence surgical quality are described and those related to postoperative follow-up are analyzed by dividing patients in 3 groups, complete follow-up, lost to follow-up and without follow-up data. Results: Thirty-nine patients were included, with a mean age of 68 years. Twenty-eight percent were diagnosed in stage IV, with low percentages in early stages. There were 57% emergency procedures and 43% elective proceduress. The most common cause of emergency was intestinal obstruction (36.6%). The anastomotic dehiscence rate was 16.6% and the mortality rate was 15.3%. Only 33% of patients had complete follow-up. Conclusion: there is a deficit in the care and follow-up of patients undergoing CRC surgery in our hospital. The creation of a specific team in the area of coloproctology is required, as well as a unified monitoring protocol to improve these results. (AU)

Recurrence rate of oral melanotic macule treated with Q-switched alexandrite laser versus surgical excision: a retrospective cohort study / 口腔疾病防治

Objective@#To compare the recurrence rates between 755 nm Q-switched alexandrite laser (QSAL) treatment and surgical excision of oral melanotic macules (OMM).@*Methods@#This study was reviewed and approved by the Ethics Committee, and informed consent was obtained from the patients. A retrospective cohort study was designed to collect demographic and clinical characteristics and follow-up data from patients with OMM. Patients who received QSAL or surgical excision in the Department of Oral Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine from January 2019 to August 2021 were included. The one-year recurrence rate was investigated as the primary outcome. Long-term adverse reaction rates were investigated as safety indicators. Kaplan-Meier analyses were performed to analyze the recurrence-free rates between the groups.@*Results@#A total of 57 patients were enrolled in this study. 16 patients underwent surgical excision, and 41 underwent QSAL. The baseline demographic and clinical characteristics between the groups were not significantly different. No recurrence (0%) of OMM was observed in the surgical excision group, while in the QSAL group, the macule recurred in 12 patients (29.27%). The average duration of recurrence was 6.08 months after treatment. Recurrence was not found to be associated with smoking (P = 1.000), gastrointestinal polyps (P = 1.000), longitudinal melanonychia (P = 0.187), family history (P = 0.552), treatment sessions (P = 0.567) or multiple macule lesions (P = 0.497). Compared with treatment with surgical excision, the odds ratio of recurrence for treatment with QSAL was 4.41, with a 95% confidence interval of 1.27-15.24 (P = 0.020). In the surgical excision group, 3 patients (18.75%) reported depressions and scars on the lesion, while no long-term adverse reactions (0%) were reported in the QSAL group (P = 0.019).@*Conclusion@#Compared with surgical excision, the advantage of QSAL is the low long-term adverse reaction rate, while the disadvantage is the relatively high one-year recurrence rate. It is necessary to communicate the advantages and disadvantages of the two methods with OMM patients to assist in clinical decision-making.

Survival rate and quality of life in patients with liver cirrhosis complicated with bacterial infection / 公共卫生与预防医学

Objective To analyze the short-term survival and prognostic quality of life of patients with liver cirrhosis complicated by bacterial infection. Methods This study collected and analyzed 300 patients with liver cirrhosis complicated with infection who were hospitalized in the First Affiliated Hospital of Hebei North University, and followed up to discuss their survival and quality of life. Results In this study, the top two causes of infection were spontaneous bacterial peritonitis (60.67% of patients) and pneumonia (50.67% of patients). The second causes were urinary tract infections (15.33%), gastrointestinal infections (12.33%), and other causes. There was no statistically significant difference between male and female patients (P>0.05). In addition, the proportion of hospital infections was 71.00%, and there was no statistically significant difference between male and female patients (P>0.05). A total of 353 strains of pathogenic bacteria were isolated in this study (73.37% of patients with hospital infections). The distribution analysis of pathogenic bacteria showed that the highest proportion of ECO was 35.98%, followed by Klebsiella pneumoniae (18.98%). The distribution trend of 259 strains of pathogenic bacteria among hospital patients was consistent with that of all strains, and the difference was not statistically significant (P>0.05). Gram negative bacteria accounted for 79.60% (281/353) of all detected strains, of which Escherichia coli was mostly detected in patients with spontaneous bacterial peritonitis, Klebsiella Pneumoniae (KPN) and Pseudomonas aeruginosa (PAE) were mostly detected in patients with pneumonia, and Enterococcus (ENF) was mostly detected in patients with urinary tract infection; Among gram-negative bacteria, Staphylococcus epidermidis (SEP) and Staphylococcus aureus (SAU) are mostly found in patients with other infectious causes (blood flow infection, etc.) , and Streptococcus (STR) accounts for a high proportion in patients with Spontaneous bacterial peritonitis. In this study, 9 cases of death prognosis were detected during follow-up, and there was no statistically significant difference in the detection of death prognosis between different bacterial strains in both genders, as well as the difference in detection of death prognosis between hospital infections and out of hospital infections in both genders (P>0.05). There was no statistically significant difference in the detection of death prognosis between males and females due to different causes of infection, P>0.05. The quality of life scores of 291 surviving patients were compared between baseline and follow-up, indicating an increase in follow-up scores, especially in the dimensions of physiological function and physical pain. There was no statistically significant difference between different bacterial strains, infection causes, and hospital/non hospital infections (P>0.05) . Conclusion Spontaneous bacterial peritonitis and pneumonia are the main causes of infection that deserve special attention, and the main pathogens of infection are Gram negative bacteria. Targeted treatment and rehabilitation should be provided for patients with liver cirrhosis complicated by infection. At the same time, the proportion of hospital infections is relatively high, and attention should be paid to, prevention and control measures should be implemented as well.

Establishment and application of a prospective follow-up research method for acute infectious diseases in Shanghai community residents / 上海预防医学

ObjectiveTo present the exploration and application of a prospective follow-up research method for acute infectious disease surveillance based on natural community populations， using COVID-19 infection as an example， and to provide a reference for improving the infectious disease surveillance and early warning system. MethodsA multi-stage probability proportional sampling method was employed to sample residents from all communities of 16 administrative districts in Shanghai， with households as the units. A cohort for acute infectious diseases based on natural community populations was established. The baseline survey was conducted for all cohort subjects， and COVID-19 antigen test kits were distributed. From December 21， 2022 to September 30， 2023， prospective follow-up monitoring of COVID-19 antigen and nucleic acid was carried out on the study subjects on a weekly basis. The baseline characteristics and follow-up information of the cohort subjects were described. ResultsThe cohort for acute infectious diseases included a total of 12 881 subjects， comprising 6 098 males （47.3%） and 6 783 females （52.7%）. The baseline survey revealed that 35.2% （4 540/12 881） of the subjects had a history of COVID-19 infection. During the follow-up period from December 21， 2022 to September 30， 2023， the average incidence density in the cohort was 0.61/person-year， with a higher incidence density in females （0.63/person-year） compared to males （0.59/person-year）. Individuals aged 60 and above （0.64/person-year） and those with underlying health conditions （0.67/person-year） had a higher incidence density. Healthcare workers showed a notably higher incidence density （0.84/person-year） than that in other occupational groups. As of September 30， 2023， a total of 340 subjects in the cohort experienced secondary infections， with a median interval of 170 days between the first and second infections. ConclusionThis study applies cohort study method to acute infectious disease surveillance， providing crucial data support for estimating infection rates and forecasting alerts for acute infectious diseases in the community. This method can be promoted and applied as a new approach for acute infectious disease surveillance.

Longitudinal study on anxiety and intolerance of uncertainty among Chinese college students / 中国学校卫生

Objective@#To explore the longitudinal changes and related predictive factors of anxiety and intolerance of uncertainty (IU) among Chinese college students, so as to provide theoretical reference for promoting students mental health.@*Methods@#Intolerance of Uncertainty Scale-short Form and the 7 item Generalized Anxiety Disorder Scale were administered among 5 683 students from 22 universities in Guangdong Province from September 10 to October 17, 2021 (T1, baseline survey), and from March 15 to April 22, 2023 (T2). Using paired sample t-test to analyze the changes in anxiety and IU among college students, a linear regression model was established to explore factors that can predict anxiety, IU and their changes during T1 and T2 periods.@*Results@#During the T1 period, the average scores of anxiety and IU among college students were (3.26±3.46, 34.88±7.96), while during the T2 period, they were (4.41±4.16, 36.40±8.07). During the T2 period, the levels of anxiety and IU among college students were higher than those during the T1 period ( t=19.59, 13.67, P <0.01). The linear regression results showed that age ( B = -0.02 ), moderate ( B =-0.18) and poor ( B =-0.88) mental health status, as well as online browsing of Corona Virus Disease 2019 (COVID-19) epidemic (later called as epidemic) related information for >1-<3 hours ( B =-0.30) and ≥3 hours ( B =-0.22), all of which could negatively predict changes in anxiety during T1 to T2 periods. Living in rural areas ( B =0.11) could positively predict changes in anxiety during T1 to T2 periods ( P <0.05). Moderate ( B =-0.19) and poor ( B =-0.47) mental health status, browsing epidemic related information online for >1-<3 hours ( B =-0.32) and ≥3 hours ( B =-0.33), academic performance being moderately affected by the epidemic ( B =-0.10), and personal planning being moderately affected by the epidemic ( B =-0.13) and severely affected ( B =-0.22), all of which could negatively predict changes in IU during T1 to T2 periods ( P <0.05).@*Conclusions@#Levels of anxiety and intolerance of uncertainty increases significantly after epidemic. Mental health status of college students should need long term monitoring, and students with poor mental health should need special attention.

Prognostic Impact of Residual Moderate Mitral Regurgitation Following Valve-in-Valve Transcatheter Aortic Valve Implantation

ABSTRACT Introduction: The impact of mitral regurgitation (MR) on valve-in-valve transcatheter aortic valve implantation (VIV-TAVI) in patients with failed bioprostheses remains unclear. The purpose of this study was to assess the prognostic impact of residual moderate MR following VIV-TAVI. Methods: We retrospectively analyzed 127 patients who underwent VIV-TAVI between March 2010 and November 2021. At least moderate MR was observed in 51.2% of patients before the procedure, and MR improved in 42.1% of all patients. Patients with postoperative severe MR, previous mitral valve intervention, and patients who died before postoperative echocardiography were excluded from further analyses. The remaining 114 subjects were divided into two groups according to the degree of postprocedural MR: none-mild MR (73.7%) or moderate MR (26.3%). Propensity score matching yielded 23 pairs for final comparison. Results: No significant differences were found between groups before and after matching in early results. In the matched cohort, survival probabilities at one, three, and five years were 95.7% vs. 87.0%, 85.0% vs. 64.5%, and 85.0% vs. 29.0% in the none-mild MR group vs. moderate MR-group, respectively (log-rank P=0.035). Among survivors, patients with moderate MR had worse functional status according to New York Heart Association (NYHA) class at follow-up (P=0.006). Conclusion: MR is common in patients with failed aortic bioprostheses, and improvement in MR-status was observed in over 40% of patients following VIV-TAVI. Residual moderate MR after VIV-TAVI is not associated with worse early outcomes, however, it was associated with increased mortality at five years of follow-up and worse NYHA class among survivors.

Functional status of children and adolescents with COVID-19 in a reference hospital in southern Brazil / Estado funcional de crianças e adolescentes com COVID-19 em um hospital de referência no sul do Brasil

Abstract Introduction COVID-19 could leave important consequences, including functional decline. Objective Eval-uate functional status in pediatric patients hospitalized with COVID-19 and correlate with clinical variables. Methods Prospective and retrospective longitudinal study with patients with COVID-19. Hospitalization data were collected from medical record review and post discharge data were collected by telephone contact. Functional status was evaluated by Functional Status Scale (FSS-Brazil) in three moments (hospital admission, hospi-tal discharge and after hospital discharge). Spearman test was used to correlate continuous variables and the linear model with generalized estimation equations was used to verify differences in the proportion of functional impairment occurrence (FSS-Brazil ≥ 8) at different mo-ments of the study and previous disease presence. Results It was included 232 patients, 56% male, median age of five years old. Seventy (30.2%) patients had post discharge data. The mean global score of FSS-Brazil was 7.3 at hospital admission, 6.8 at discharge hospital and 6.8 after discharge hospital. Functional status was adequate in the three different moments evaluated in 75% of the sample. The ventilatory support needed was not correlated with functional status and the length of hos-pital stay and oxygen therapy showed weak correlations with functional status. Having no previous disease reduced the risk of functional impairment by 94%. Conclusion The majority of the patients maintained adequate functional status. Absence of previous disease was a protective factor for long term functional impairment.

Resumo Introdução A COVID-19 pode deixar sequelas impor-tantes, como declínio funcional. Objetivo Avaliar a funcionalidade dos pacientes pediátricos internados com COVID-19 e correlacionar com variáveis clínicas. Métodos Estudo longitudinal retrospectivo e prospectivo, com pacientes pediátricos com COVID-19. Os dados de internação hospitalar foram coletados a partir da revisão de prontuários e os dados pós-alta através de contato telefônico. A funcionalidade foi avaliada através da Escala de Estado Funcional Pediátrica (FSS-Brasil) em três momentos (admissão, alta e pós-alta hospitalar). A correlação entre as variáveis contínuas foi avaliada pelo teste de Spearman e utilizou-se o modelo linear com equações de estimação generalizada para verificar as diferenças nas proporções de ocorrência de prejuízo funcional (FSS-Brasil ≥ 8) nos diferentes momentos do estudo e na presença de doenças prévias. Resultados Foram incluídos 232 pacientes, 56% do sexo masculino, mediana de 5 anos de idade. Foram obtidos dados de seguimento pós-alta hospitalar de 70 (30,2%) crianças. O escore global médio da FSS-Brasil foi de 7,3 na admissão, 6,8 na alta e 6,8 após a alta. A funcionalidade apresentou-se adequada nos três momentos de avalia-ção em 75% da amostra. A necessidade de suporte ven-tilatório não foi correlacionado com a funcionalidade, e o tempo de internação e oxigenoterapia apresentaram correlações fracas com a funcionalidade. A inexistência de doenças prévias reduziu em 94% o risco de prejuízo funcional. Conclusão A maioria das crianças manteve funcionalidade adequada. Não ter doenças prévias foi um fator de proteção para o prejuízo funcional em longo prazo.

Desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde: revisão integrativa / Outcomes of intrauterine device insertions by nurses in healthcare institutions: an integrative review

RESUMO Objetivo identificar quais os desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde. Métodos revisão integrativa realizada em oito bases de dados, com auxílio de um gerenciador de referências bibliográficas, utilizando o modelo de JBI para a análise do nível de evidência. Os dados foram organizados, categorizados e discutidos por meio de síntese descritiva. Resultados 10 estudos compuseram a amostra final, sendo dois apenas com enfermeiros e os demais com enfermeiros e médicos. Os principais desfechos avaliados foram perfuração e expulsão, sem diferenças significativas entre os profissionais que realizaram o procedimento. As taxas de sucesso, continuidade e satisfação foram semelhantes entre médicos e enfermeiros. Conclusão os desfechos das inserções de dispositivos intrauterinos por enfermeiros em instituições de saúde são similares aos realizados por médicos, com ampliação do acesso, sem aumentar as complicações relacionadas a esse método contraceptivo, contribuindo para a integralidade da assistência no campo do planejamento reprodutivo. Contribuições para a prática: os achados podem contribuir para o enfrentamento de barreiras pelos enfermeiros, servindo como subsídio para diretrizes e políticas de saúde que incentivem a inserção do dispositivo intrauterino por estes profissionais, principalmente, em contextos onde esta prática ainda não ocorre.

ABSTRACT Objective to identify the outcomes of intrauterine device insertions by nurses in healthcare institutions. Methods integrative review carried out in eight databases, with the help of a bibliographic reference manager, using the JBI model for analyzing the evidence level. The data was organized, categorized and discussed using descriptive summaries. Results 10 studies made up the final sample, two with nurses only and the others with nurses and physicians. The main outcomes assessed were perforation and expulsion, with no significant differences between the professionals who performed the procedure. Success rates, continuity and satisfaction were similar between physicians and nurses. Conclusion the outcomes of intrauterine device insertions by nurses in health institutions are similar to those carried out by physicians, with increased access, without increasing the complications related to this contraceptive method, contributing to comprehensive care in the field of reproductive planning. Contributions to practice: the findings could help nurses to tackle barriers and serve as a basis for guidelines and health policies that encourage the insertion of the intrauterine device by these professionals, especially in contexts where this practice does not yet take place.

Ações para o controle do câncer do colo do útero na Atenção Primária à Saúde (APS) do Município do Rio de Janeiro / Actions to control cervical cancer in Primary Health Care (PHC) in the City of Rio de Janeiro

O presente estudo descreve o panorama do Estado e Município do Rio de Janeiro relativo ao rastreamento para o câncer do colo do útero, os resultados de exames citopatológicos e o seguimento das mulheres registrados no Sistema de Informação do Câncer (SISCAN) no período de 2015 a 2022. O estudo ressalta a importância da atenção primária à saúde nas ações para o controle efetivo e a prevenção do câncer do colo do útero na população. A metodologia utiliza o levantamento do referencial teórico através da análise das produções bibliográficas encontradas na literatura para contextualização temática do estudo, a utilização de dados secundários e a obtenção dos achados disponibilizados no SISCAN com relação aos registros dos laudos de exames citopatológicos realizados pelas mulheres no período de análise do estudo. Como resultados, foi possível identificar falhas de registro, baixo número de exames e fragilidades para o gerenciamento do sistema de informação pela gestão estadual e municipal. Com os resultados preliminares, foi necessário analisar a produção de exames citopatológicos no Sistema de Informação ambulatorial (SIA) para subsidiar as discussões e hipóteses para o encontrado, como a baixa produção de exames citopatológicos e o sub-registro no SISCAN no Estado e Município do Rio de Janeiro. Considera-se que existe a necessidade urgente de uma reorganização dos serviços locais para implementar as ações do rastreamento para o câncer do colo do útero, incluindo a garantia do acesso para detecção precoce e o acompanhamento das mulheres encaminhadas a outros níveis de atenção da rede para confirmação diagnóstica, acompanhamento e tratamento. Ressalta-se a importância de assegurar a integralidade das ações para o controle efetivo do câncer do colo do útero em todo o Estado e Município do Rio de Janeiro. (AU)

The present case study describes an analysis of cytopathological exam reports registered in the Cancer Information System (SISCAN) from 2015 to 2022 in the Municipality and State of Rio de Janeiro. Above all, the study seeks to highlight the importance of primary health care in actions to control and prevent cervical cancer. The methodology used to develop the study consists of surveying the theoretical framework through the analysis of bibliographical productions found for the thematic contextualization of the study and the use of a secondary database and obtaining possible findings in SISCAN on the records of exam reports cytopathological. In this sense, it was possible to identify registration flaws, a low number of exams and weaknesses in the management of the information system by state and municipal management. In view of this, it was necessary to analyze the production of cytopathological exams in the outpatient Information System (SIA) to support discussions and hypotheses of the results found, such as the high incidence and mortality from cervical cancer, the low production of cytopathological exams and under-registration in SISCAN in the State and Municipality of Rio de Janeiro. Concluding, therefore, the urgent and imminent need for the organization of local services to implement organized screening actions for cervical cancer, including ensuring access to early detection and monitoring of women referred to other levels of care in the network for diagnostic confirmation and treatment. Therefore, ensure the completeness of cervical cancer control actions throughout the State and Municipality of Rio de Janeiro. (AU)

Salud mental y bienestar psicológico: variaciones durante la pandemia de COVID 19 en estudiantes de una facultad universitaria chilena

Antecedentes: Existe un aumento sostenido de la prevalencia de trastornos mentales en estudiantes universitarios, situación agudizada por la pandemia por COVID-19. Objetivo: Caracterizar la sintomatología de salud mental y el bienestar psicológico en un grupo de universitarios chilenos y explorar cambios en su situación durante el año académico en pandemia. Metodología: Diseño longitudinal, con dos mediciones utilizando un conjunto de instrumentos validados incluidos en un sistema de seguimiento del bienestar psicológico estudiantil (SIS-BP) disponible en una plataforma en línea. La muestra, de 1176 estudiantes, no probabilística, fue obtenida por participación voluntaria. Resultados: Se encontraron diferencias entre las administraciones, mostrando que, junto con producirse deterioro de la salud mental y el bienestar psicológico, también se desarrollan procesos de fortalecimiento de capacidades. Conclusión: Se destaca la importancia de acciones institucionales oportunas para sostener la trayectoria estudiantil frente al impacto de situaciones de emergencia en la salud mental de esta población.

Background: There is a sustained increase in the prevalence of mental disorders in college students, a situation exacerbated in 2020 by the COVID-19 pandemic. Objectives. To characterize the symptoms of mental health and psychological well-being in Chilean college students and to explore changes in the situation of students throughout the academic year during the pandemic. Methodology: A longitudinal survey design was used, with two measurements using a set of validated instruments included in a student psychological well-being monitoring system (SIS-BP), available on an online platform. The non-probabilistic sample of 1176 students were obtained by voluntary participation. Results: Differences were found between the administrations, showing that, along with the deterioration of mental health and psychological well-being, capacity building processes are also developed. Conclusion: The importance of timely institutional actions to sustain the trajectory of its students in the face of the impact of emergency situations on the mental health of this population is highlighted.

Tratamiento endovascular de aneurismas con anatomía aórtica compleja / Endovascular treatment of aneurysms with complex aortic anatomy

RESUMEN Introducción: la anatomía arterial es la principal limitante para el abordaje aórtico endovascular estándar. Presentamos nuestra experiencia para la reparación endovascular de aneurismas aórticos complejos. Material y métodos: estudio observacional retrospectivo en pacientes con aneurismas complejos (yuxta/pararrenales y toracoabdominales) tratados en forma consecutiva mediante: endoprótesis fenestradas (FEVAR), ramificadas (BEVAR), con EndoAnchors (ESAR), o en chimenea (ChEVAR). La decisión de la técnica fue determinada con base en la anatomía arterial. Resultados: se evaluaron los últimos 50 procedimientos (6 mujeres; edad promedio 71,3 años; diámetro 69,6mm; 3 pacientes con aneurismas complicados), de los cuales 22 recibieron FEVAR (2,8 fenestraciones / paciente), 11 BEVAR, 11 ESAR y 6 ChEVAR (1,8 chimeneas /paciente). La tasa de éxito técnico fue del 100% (ausencia de endoleak I o III con permeabilidad adecuada de los vasos viscerales). A 30 días 3 pacientes fallecieron (6%). Durante el seguimiento, 5 pacientes presentaron oclusión de la arteria renal, repermeabilizada en 4. Cuatro pacientes desarrollaron un endoleak tipo IA (3 ESAR secundarios y un ChEVAR), un paciente un endoleak IC y un cuarto uno IIIB (22%, 3 de los 11 ESAR, ninguno de los FEVAR industriales). En el análisis de supervivencia, la supervivencia global fue del 88,6% al año, y libre de reoperación del 86,5%. Conclusiones: se trata de la primera publicación en nuestro medio que muestra un enfoque global del paciente con un aneurisma de aorta complejo, de acuerdo con sus características anatómicas. Estas tecnologías ya desempeñan un papel primario en el tratamiento de estos pacientes.

ABSTRACT Background: Arterial anatomy is the main limiting factor for standard endovascular aortic (EVAR) approach. We present our experience for endovascular repair of complex aortic aneurysms. Material and Methods: This is a retrospective observational study in patients with complex aneurysms (juxta/pararenal and thoracoabdominal) treated consecutively with: fenestrated (FEVAR), branched (BEVAR), EndoAnchors (ESAR), or chimney (ChEVAR) stents. The decision of the technique was determined based on the arterial anatomy. Results: The last 50 procedures were evaluated (6 women; mean age 71.3 years; diameter 69.6 mm; and 3 patients with complicated aneurysms), among whom 22 received FEVAR (2.8 fenestrated stents/patient), 11 BEVAR, 11 ESAR and 6 ChEVAR (1.8 chimney stents/patient). Technical success rate was 100% (absence of type I or III endoleak with adequate patency of the visceral vessels). Three patients died within the first 30 days (6%). During follow-up, 5 patients presented with renal artery occlusion, treated successfully in 4 cases. Four patients developed type IA endoleak (3 secondary ESAR and one ChEVAR), one patient IC endoleak and almost a quarter of cases type IIIB endoleak (22%, 3 out of 11 patients receiving ESAR, none of the industrial FEVAR group). In survival analysis, overall survival analysis was 88.6% at one year, and 86.5% of cases were free from reoperation. Conclusions: This is the first publication in our setting that shows a global approach to the patient with complex aortic aneurysm, according to the anatomical characteristics. These technologies already play a primary role in the treatment of these patients.

Endosonographic Characteristics of Subepithelial Lesions of the Upper Digestive Tract: Experience of a Referral Center in Colombia

Introduction: Subepithelial lesions (SELs), described as bulges or masses covered by healthy-looking mucosa, are usually found incidentally during endoscopic studies. They are typically asymptomatic and are estimated to be identified in 1% of esophagogastroduodenoscopies performed. Materials and methods: A descriptive study was conducted with retrospective data collection. We included all patients treated at the Unión de Cirujanos, a referral gastroenterology unit of the Coffee Region in Manizales, between January 2020 and January 2022, who underwent endoscopic ultrasonography to study subepithelial-looking lesions located in the esophagus, stomach, and duodenum. Results: 152 endoscopic ultrasounds were performed, finding 108 SELs; 66.6% of the patients were women, and the average age was 58. Most SELs were located in the stomach (78.7%), the antrum being the most frequent location. The average diameter of the gastric SELs was 14.6 mm, and 47% of the lesions depended on the fourth echolayer; the most frequent presumptive diagnoses were gastrointestinal stromal tumor (GIST; 65.8%) and lipoma (11.7%). Conclusions: SELs of the GI tract originate in the muscularis mucosae, submucosa, or muscularis propria. They are most frequently located in the stomach, and their characterization usually requires endoscopic ultrasonography and histopathology. Treatment of these lesions remains controversial due to their low frequency, histological variety, and low malignant potential.

Introducción: las lesiones subepiteliales (LSE), descritas como abultamientos o masas cubiertas por mucosa de aspecto sano, se encuentran usualmente de manera incidental durante estudios endoscópicos; suelen ser asintomáticas y se estima que se identifican en el 1% de las esofagogastroduodenoscopias realizadas. Métodos: se realizó un estudio descriptivo con recolección retrospectiva de la información. Se incluyeron todos los pacientes atendidos en Unión de Cirujanos, unidad de gastroenterología de referencia del Eje Cafetero ubicada en la ciudad de Manizales, entre enero de 2020 y enero de 2022, a quienes se les realizó ultrasonografía endoscópica como parte del estudio de lesiones de aspecto subepitelial localizadas en el esófago, estómago y duodeno. Resultados: se realizaron 152 endosonografías y se encontraron 108 lesiones subepiteliales, 66,6% de los pacientes eran mujeres y el promedio de edad fue 58 años. La mayoría de las LSE se localizaron en el estómago (78,7%) y, de estas, la localización más frecuente fue el antro; el diámetro promedio de las LSE gástricas fue de 14,6 mm y el 47% de las lesiones eran dependientes de la cuarta ecocapa; los diagnósticos presuntivos más frecuentes fueron el tumor del estroma gastrointestinal (GIST; 65,8%) y lipoma (11,7%). Conclusiones: las LSE del tracto gastrointestinal se originan en la muscular de la mucosa, submucosa o muscular propia, de manera más frecuente se localizan en el estómago y su caracterización suele requerir la realización de ultrasonografía endoscópica y estudio histopatológico. El tratamiento de estas lesiones sigue siendo controversial debido a su baja frecuencia, variedad histológica y bajo potencial maligno.

Linfocitosis monoclonal de células B en familiares de pacientes colombianos con síndromes linfoproliferativos crónicos B

Introducción. La linfocitosis monoclonal de células B, generalmente, precede la leucemia linfocítica crónica y afecta alrededor del 12 % de la población adulta sana. Esta frecuencia se incrementa en familiares de pacientes con síndromes linfoproliferativos crónicos de células B. Objetivo. Determinar la frecuencia de linfocitosis monoclonal B en familiares de pacientes con síndromes linfoproliferativos crónicos B, sus características inmunofenotípicas y citogenéticas, posible relación con agentes infecciosos, y seguimiento a corto plazo de población colombiana. Materiales y métodos. Se estudiaron 50 adultos sanos con antecedentes familiares de síndromes linfoproliferativos crónicos de célula B, empleando citometría de flujo multiparamétrica, pruebas citogenéticas y serológicas, encuesta de hábitos de vida y seguimiento a dos años. Resultados. La frecuencia encontrada de linfocitosis monoclonal B fue del 8 %, con predominio del sexo femenino y edad avanzada, incrementándose al 12,5 % en individuos con antecedentes familiares de leucemia linfocítica crónica. Tres de cuatro individuos presentaron inmunofenotipo de tipo leucemia linfocítica crónica, todas con bajo recuento. A su vez, en estos individuos se observa de manera significativa un mayor número de células/ µl en subpoblaciones linfocitarias T, junto con mayor predisposición a la enfermedad. Las poblaciones clonales descritas aumentan a lo largo del tiempo de manera no significativa. Conclusiones. La frecuencia y comportamiento de la linfocitosis monoclonal de célula B en pacientes con antecedentes familiares de síndromes linfoproliferativos crónicos B es similar a lo encontrado en estudios relacionados, lo que sugiere que no existe afectación de genes de mayor relevancia que puedan desencadenar una proliferación clonal descontrolada, pero que generan desregulación inmunológica que podría indicar un mayor riesgo de infección grave en estos individuos.

Introduction. Monoclonal B-cell lymphocytosis generally precedes chronic lymphocytic leukemia, affecting about 12% of the healthy adult population. This frequency increases in relatives of patients with chronic B-cell lymphoproliferative disorders. Objective. To determine the frequency of monoclonal B-cell lymphocytosis in relatives of patients with chronic B-cell lymphoproliferative disorders, their immunophenotypic/ cytogenetic characteristics, a possible relationship with infectious agents, and short-term follow-up in the Colombian population. Materials and methods. Fifty healthy adults with a family history of chronic B-cell lymphoproliferative disorders were studied using multiparametric flow cytometry, cytogenetic/serological testing, lifestyle survey, and 2-year follow-up. Results. The frequency of monoclonal B-cell lymphocytosis found was 8%, with a predominance of female gender and advanced age, increasing to 12.5% for individuals with a family history of chronic lymphocytic leukemia. Three out of four individuals presented chronic lymphocytic leukemia-type immunophenotype, all with low counts. In turn, a significantly higher number of cells/µΙ is observed in these individuals in T lymphocyte subpopulations, together with a greater predisposition to the disease. The described clonal populations increase over time in a non-significant manner. Conclusions. The frequency and behavior of monoclonal B-cell lymphocytosis in patients with family history of chronic B-cell lymphoproliferative disorders are like those found in related studies, which suggests that there is no involvement of more relevant genes that can trigger uncontrolled clonal proliferation, but that generates immunological deregulation that could justify a greater risk of serious infection in these individuals.