A prática de atividade física por acadêmicos de medicina durante a pandemia causada pelo SARS-CoV-2: um estudo transversal / The practice of physical activity of medical students during the pandemic caused by SARS-CoV-2: a cross-sectional study

Introdução: o contexto de pandemia instaurada pelo SARS-CoV-2 acarretou um cenário de isolamento social, dificultando a prática de atividade física regular. Somado a isso, os estudantes de Medicina ainda possuem uma carga horária sobrecarregada. O objetivo do trabalho foi conhecer a qualidade de vida e a prevalência da prática de atividade física e seus efeitos durante o período de pandemia em acadêmicos de Medicina. Métodos: estudo observacional transversal realizado a partir da aplicação do questionário "Prática de atividade física por acadêmicos de Medicina durante a pandemia" em 286 estudantes de ambos os sexos, de todos os períodos de uma faculdade. Resultados: notou-se que os participantes, cursando Medicina com ensino remoto, que tinham mais motivação e tempo livre praticavam mais atividade física, enquanto os participantes que tinham menos motivação e tempo livre diminuíram a prática no período analisado. Discussão: Os estudantes compreendem que a prática de atividade física é benéfica, mesmo ela sendo impedida por cargas horárias extenuantes, até mesmo devido à educação que recebem durante a graduação. Conclusão: constatou-se que acadêmicos de Medicina que possuem aulas de educação remota durante o período estabelecido de isolamento social, consideraram apresentar mais tempo livre para a prática de atividade física. Entretanto, nem todos dedicaram esse tempo para a realização de exercícios [au]

Introduction: the context of the SARS-CoV-2 pandemic led to a scenario of social isolation, hindering the practice of regular physical activity. In addition, medical students still have a very high workload. The objective of this study was to assess the quality of life and the prevalence of physical activity and its effects among medical students during the pandemic period. Methods: cross-sectional observational study conducted through the application of the questionnaire "Engagement in physical activity among medical students during the pandemic" in 286 students of both genders, from all course periods. Results: it was found that the participants on remote medical training who had more motivation and free time exercised more, while the participants who had less motivation and free time decreased their practice of exercises in the analyzed period. Discussion: Students understand that physical activity is beneficial, even though it is hindered by strenuous workloads, due to the education they receive in the course. Conclusion: it was found that medical students who had remote classes during the period of social isolation considered they had more free time for the practice of exercises. However, not all of the dedicated this time to physical activity [au]

Changes in Body Size during Early Growth Are Independently Associated with Arterial Properties in Early Childhood.

Nutritional status in early life stages has been associated with arterial parameters in childhood. However, it is still controversial whether changes in standardized body weight (z-BW), height (z-BH), BW for height (z-BWH) and/or body mass index (z-BMI) in the first three years of life are independently associated with variations in arterial structure, stiffness and hemodynamics in early childhood. In addition, it is unknown if the strength of the associations vary depending on the growth period, nutritional characteristics and/or arterial parameters analyzed. AIMS: First, to compare the strength of association between body size changes (Δz-BW, Δz-BH, Δz-BWH, Δz-BMI) in different time intervals (growth periods: 0-6, 0-12, 0-24, 0-36, 12-24, 12-36, 24-36 months (m)) and variations in arterial structure, stiffness and hemodynamics at age 6 years. Second, to determine whether the associations depend on exposure to cardiovascular risk factors, body size at birth and/or on body size at the time of the evaluation (cofactors). Anthropometric (at birth, 6, 12, 24, 36 m and at age 6 years), hemodynamic (peripheral and central (aortic)) and arterial (elastic (carotid) and muscular (femoral) arteries; both hemi-bodies) parameters were assessed in a child cohort (6 years; n =632). The association between arterial parameters and body size changes (Δz-BW, Δz-BH, Δz-BWH, Δz-BMI) in the different growth periods was compared, before and after adjustment by cofactors. RESULTS: Δz-BW 0-24 m and Δz-BWH 0-24 m allowed us to explain inter-individual variations in structural arterial properties at age 6 years, with independence of cofactors. When the third year of life was included in the analysis (0-36, 12-36, 24-36 m), Δz-BW explained hemodynamic (peripheral and central) variations at age 6 years. Δz-BH and Δz-BMI showed limited associations with arterial properties. CONCLUSION: Δz-BW and Δz-BWH are the anthropometric variables with the greatest association with arterial structure and hemodynamics in early childhood, with independence of cofactors.

Stroke volume and cardiac output non-invasive monitoring based on brachial oscillometry-derived pulse contour analysis: Explanatory variables and reference intervals throughout life (3-88 years).

BACKGROUND: Non-invasive assessment of stroke volume (SV), cardiac output (CO) and cardiac index (CI) has shown to be useful for the evaluation, diagnosis and/or management of different clinical conditions. Through pulse contour analysis (PCA) cuff­based oscillometric devices would enable obtaining ambulatory operator-independent non-invasive hemodynamic monitoring. There are no reference intervals (RIs), when considered as a continuum in childhood, adolescence and adult life, for PCA-derived SV [SV(PCA)], CO [CO(PCA)] and CI [CI(PCA)]. The aim of the study were to analyze the associations of SV(PCA), CO(PCA) and CI(PCA) with demographic, anthropometric, cardiovascular risk factors (CVRFs) and hemodynamic parameters, and to define RIs and percentile curves for SV(PCA), CO(PCA) and CI(PCA), considering the variables that should be considered when expressing them. METHODS: In 1449 healthy subjects (3-88 years) SV(PCA), CO(PCA) and CI(PCA) were non-invasively obtained (Mobil-O-Graph; Germany). ANALYSIS: associations between subject characteristics and SV(PCA), CO(PCA) and CI(PCA) levels (correlations; regression models); RIs and percentiles for SV(PCA), CO(PCA) and CI(PCA) (parametric methods; fractional polynomials). RESULTS: Sex, age, and heart rate would be explanatory variables for SV, CO, and CI levels. SV levels were also examined by body height, while body surface area (BSA) contributing to evaluation of CO and CI. CVRFs exposure did not contribute to independently explain the values of the dependent variables. SV, CO and CI levels were partially explained by the oscillometric-derived signal quality. RIs and percentiles were defined. CONCLUSIONS: Reference intervals and percentile for SV(PCA), CO(PCA) and CI(PCA), were defined for subjects from 3-88 years of age, results are expressed according to sex, age, heart rate, body height and/or BSA.

Carotid and Femoral Atherosclerotic Plaques in Asymptomatic and Non-Treated Subjects: Cardiovascular Risk Factors, 10-Years Risk Scores, and Lipid Ratios´ Capability to Detect Plaque Presence, Burden, Fibro-Lipid Composition and Geometry.

Carotid and/or femoral atherosclerotic plaques (AP) assessment through imaging studies is an interesting strategy for improving individual cardiovascular risk (CVR) stratification and cardiovascular disease (CVD) and/or events prediction. There is no consensus on who would benefit from image screening aimed at determining AP presence, burden, and characteristics. AIMS: (1) to identify, in asymptomatic and non-treated subjects, demographic factors, anthropometric characteristics and cardiovascular risk factors (CRFs), individually or grouped (e.g., CVR equations, pro-atherogenic lipid ratios) associated with carotid and femoral AP presence, burden, geometry, and fibro-lipid content; (2) to identify cut-off values to be used when considering the variables as indicators of increased probability of AP presence, elevated atherosclerotic burden, and/or lipid content, in a selection scheme for subsequent image screening. METHODS: CRFs exposure and clinical data were obtained (n = 581; n = 144 with AP; 47% females). Arterial (e.g., ultrasonography) and hemodynamic (central [cBP] and peripheral blood pressure; oscillometry/applanation tonometry) data were obtained. Carotid and femoral AP presence, burden (e.g., AP number, involved territories), geometric (area, width, height) and fibro-lipid content (semi-automatic, virtual histology analysis, grayscale analysis and color mapping) were assessed. Lipid profile was obtained. Lipid ratios (Total cholesterol/HDL-cholesterol, LDL-cholesterol/HDL-cholesterol, LogTryglicerides(TG)/HDL-cholesterol) and eight 10-years [y.]/CVR scores were quantified (e.g., Framingham Risk Scores [FRS] for CVD). RESULTS: Age, 10-y./CVR and cBP showed the highest levels of association with AP presence and burden. Individually, classical CRFs and lipid ratios showed almost no association with AP presence. 10-y./CVR levels, age and cBP enabled detecting AP with large surfaces (˃p75th). Lipid ratios showed the largest association with AP fibro-lipid content. Ultrasound evaluation could be considered in asymptomatic and non-treated subjects aiming at population screening of AP (e.g., ˃ 45 y.; 10-y./FRS-CVD ˃ 5-8%); identifying subjects with high atherosclerotic burden (e.g., ˃50 y., 10-y./FRS-CVD ˃ 13-15%) and/or with plaques with high lipid content (e.g., LogTG/HDL ˃ 0.135).

Manejo de pacientes con síndrome de Budd-Chiari. Revisión de tema / Treatment of patients with Budd-Chiari syndrome. Literature review

El síndrome de Budd-Chiari (SBC), descrito en 1845, se define como la obstrucción del flujo venoso hepático en ausencia de enfermedad cardíaca o pericárdica. En Colombia no se tienen datos epidemiológicos claros de esta patología, la cual alrededor del mundo se considera poco frecuente. Se diagnostica al demostrar la obstrucción del flujo de las venas hepáticas. Tiene diversas manifestaciones clínicas como fiebre, ascitis, dolor abdominal y circulación colateral, entre otras. En ciertos casos es asintomática y en su gran mayoría se acompaña de patologías protrombóticas. El manejo inicial depende de la condición del paciente; sin embargo, se ha propuesto el manejo escalonado, donde se inicia con anticoagulación, se continúa con angioplastia, luego con desvío portosistémico intrahepático transyugular (TIPS), y se termina con trasplante hepático. El pronóstico depende de un diagnóstico precoz y un tratamiento adecuado. En las mejores circunstancias se alcanza una sobrevida a cinco años en el 90% de los casos, mientras que en ausencia de manejo, la tasa de mortalidad a un año alcanza el mismo porcentaje.

Budd-Chiari syndrome (SBC), described in 1845, is defined as the obstruction of hepatic venous flow in the absence of heart or pericardial disease. In Colombia there are no clear epidemiological data of this pathology, that around the world is considered rare. It is diagnosed by demonstrating the obstruction of the flow of the hepatic veins. It has various clinical manifestations such as fever, ascites, abdominal pain and collateral circulation, among others. In certain cases, it is asymptomatic but in the great majority it is accompanied by prothrombotic pathologies. Initial management depends on the patient's condition; however, staggered management has been proposed, beginning with anticoagulation, continuing with angioplasty, then with transjugular intrahepatic portosystemic shunt (TIPS), and finally, with liver transplantation. The prognosis depends on an early diagnosis and proper treatment. In the best circumstances, a five-year survival is achieved in 90% of cases, while in the absence of treatment, the one-year mortality rate reaches the same percentage.

Aortic pressure and forward and backward wave components in children, adolescents and young-adults: Agreement between brachial oscillometry, radial and carotid tonometry data and analysis of factors associated with their differences.

Non-invasive devices used to estimate central (aortic) systolic pressure (cSBP), pulse pressure (cPP) and forward (Pf) and backward (Pb) wave components from blood pressure (BP) or surrogate signals differ in arteries studied, techniques, data-analysis algorithms and/or calibration schemes (e.g. calibrating to calculated [MBPc] or measured [MBPosc] mean pressure). The aims were to analyze, in children, adolescents and young-adults (1) the agreement between cSBP, cPP, Pf and Pb obtained using carotid (CT) and radial tonometry (RT) and brachial-oscillometry (BOSC); and (2) explanatory factors for the differences between approaches-data and between MBPosc and MBPc.1685 subjects (mean/range age: 14/3-35 y.o.) assigned to three age-related groups (3-12; 12-18; 18-35 y.o.) were included. cSBP, cPP, Pf and Pb were assessed with BOSC (Mobil-O-Graph), CT and RT (SphygmoCor) records. Two calibration schemes were considered: MBPc and MBPosc for calibrations to similar BP levels. Correlation, Bland-Altman tests and multiple regression models were applied. Systematic and proportional errors were observed; errors´ statistical significance and values varied depending on the parameter analyzed, methods compared and group considered. The explanatory factors for the differences between data obtained from the different approaches varied depending on the methods compared. The highest cSBP and cPP were obtained from CT; the lowest from RT. Independently of the technique, parameter or age-group, higher values were obtained calibrating to MBPosc. Age, sex, heart rate, diastolic BP, body weight or height were explanatory factors for the differences in cSBP, cPP, Pf or Pb. Brachial BP levels were explanatory factors for the differences between MBPosc and MBPc.

Arterial Structural and Functional Characteristics at End of Early Childhood and Beginning of Adulthood: Impact of Body Size Gain during Early, Intermediate, Late and Global Growth.

An association between nutritional characteristics in theearlylife stages and the state of the cardiovascular (CV) system in early childhood itself and/or at the beginning of adulthood has been postulated. It is still controversial whether changes in weight, height and/or body mass index (BMI) during childhood or adolescence are independently associated with hemodynamics and/or arterial properties in early childhood and adulthood. AIMS: First, to evaluate and compare the strength of association between CVproperties (at 6 and 18 years (y)) and (a) anthropometric data at specific growth stages (e.g., birth, 6 y, 18 y) and (b) anthropometric changes during early (0-2 y), intermediate (0-6 y), late (6-18 y) and global (0-18 y) growth. Second, to determine whether the associations between CVproperties and growth-related body changes depend on size at birth and/or at the time of CVstudy. Third, to analyze the capacity of growth-related body size changes to explain hemodynamic and arterial properties in early childhood and adulthood before and after adjusting for exposure to CV risk factors. Anthropometric, hemodynamic (central, peripheral) and arterial parameters (structural, functional; elastic, transitional and muscular arteries) were assessed in two cohorts (children, n = 682; adolescents, n = 340). Data wereobtained and analyzed following identical protocols. RESULTS: Body-size changes in infancy (0-2 y) and childhood (0-6 y) showed similar strength of association with CV properties at 6 y. Conversely, 0-6, 6-18 or 0-18 ychanges were not associated with CV parameters at 18 y. The association between CV properties at 6 yand body-size changes during growth showed: equal or greater strength than the observed for body-size at birth, and lower strength compared to that obtained for current z-BMI. Conversely, only z-BMI at 18 y showed associations with CV z-scores at 18 y. Body size at birth showed almost no association with CVproperties at 6 or 18 y. CONCLUSION: current z-BMI showed the greatest capacity to explain variations in CV properties at 6 and 18 y. Variations in some CV parameters were mainly explained by growth-related anthropometric changes and/or by their interaction with current z-BMI. Body size at birth showed almost no association with arterial properties at 6 or 18 y.

Colangiocarcinoma en pacientes con colangitis esclerosante primaria / Cholangiocarcinoma in patients with primary sclerosing cholangitis

Resumen La colangitis esclerosante primaria (CEP) es una enfermedad inflamatoria poco común que afecta los conductos biliares, produciendo colestasis. Actualmente, el único tratamiento disponible es el manejo sintomático con ácido ursodesoxicólico y el trasplante hepático. Además de ser una etiología de cirrosis a largo plazo, en su historia natural tiene una asociación importante con el colangiocarcinoma (CCA), una neoplasia agresiva que es casi exclusiva de este grupo de pacientes, y hoy en día constituye su principal causa de muerte debido a que es de difícil diagnóstico y cuenta con opciones muy limitadas de tratamiento. En el presente artículo se exponen conceptos actuales sobre esta patología, enfatizando la importancia de realizar una adecuada tamización con pruebas diagnósticas efectivas (CA 19-9 y colangiorresonancia) que ayuden a diferenciar el CCA de procesos benignos y poder detectarlo en estadios tempranos donde la probabilidad de tratamiento curativo es mucho mayor.

Abstract Primary sclerosing cholangitis (PSC) is an uncommon inflammatory disease that affects the bile ducts to produce cholestasis. Currently, the only treatment available is management of symptoms with ursodeoxycholic acid and liver transplantation. In addition to its relation to long-term cirrhosis, its natural history has an important association with cholangiocarcinoma (CCA), an aggressive neoplasia which is almost exclusive to this group of patients. Today CCA is the main cause of death of these patients, primarily due to the difficultly of diagnosis and the very limited treatment options. This article discusses current ideas about this pathology and emphasizes the importance of appropriate screening with effective diagnostic tests (CA 19-9 and magnetic resonance cholangiopancreatography (MRC)) that help differentiate CCA from benign processes and can detect it in early stages when the probability of curative treatment is much greater.

Peripheral and Central Aortic Pressure, Wave-Derived Reflection Parameters, Local and Regional Arterial Stiffness and Structural Parameters in Children and Adolescents: Impact of Body Mass Index Variations.

AIM: The aim was to analyze and compare the associations between body mass index (BMI) and structural and functional cardiovascular variables measured in children and adolescents. METHODS: 609 healthy subjects (mean age/range 12/4-18 years, 45% females) were studied. Subjects' BMI and the corresponding z-scores (z-BMI) were determined. Cardiovascular measurements: peripheral and aortic blood pressure (BP), aortic wave-derived parameters, common carotid, femoral and brachial artery diameters and stiffness, carotid intima-media thickness, carotid-radial and carotid-femoral pulse wave velocity (crPWV, cfPWV) and cfPWV/crPWV ratio. Cardiovascular data were standardized (z-scores) using equations (fractional polynomials) obtained from a sub-group (reference population, n = 241) non-exposed to cardiovascular risk factors (CVRFs). Simple and multiple regression models were obtained for the associations between cardiovascular z-scores and z-BMI and/or z-BMI, age, sex and CVRFs. RESULTS: z-BMI was associated with standardized cardiovascular variables, regardless of age, sex and CVRFs. BP (peripheral rather than aortic) was the variable with the greatest variations associated with z-BMI. Systolic (SBP) and pulse pressure (PP; in that order) were the variables with the highest variations associated with z-BMI. Carotid, but not femoral or brachial stiffness showed BP-dependent variations associated with z-BMI. Arterial diameters were associated with z-BMI, without differences among arteries. CONCLUSION: In children and adolescents, z-BMI was gradually and positively associated with haemodynamic (peripheral and central BP) and vascular parameters (structural and functional) with independence of age, sex and other CVRFs (Dyslipidemia, Hypertension, Smoke, Diabetes). There were differences in the associations depending on the arteries studied and on whether central or peripheral haemodynamic parameters were analyzed.

Increases in Peripheral Systolic Pressure Levels and Z-score Associate Gradual Aortic Pressure Increase and Functional Arterial Impairment in Children and Adolescents.

BACKGROUND: Arterial changes associated with children and adolescents high blood pressure (HBP) states would vary depending on the arterial type, arterial indexes considered and/or on blood pressure (BP) levels. AIMS: To determine in children and adolescents: 1) if there is gradual structural-functional arterial impairment associated with gradual peripheral (brachial) systolic BP (pSBP) level or z-score increases, and 2) whether subjects with HBP levels and those with normal BP differ in the profiles of arterial changes associated with pSBP deviations. METHODS: 1005 asymptomatic children and adolescents were included. Clinical, anthropometric and arterial non-invasive evaluations were performed. Heart rate, brachial BP, aortic BP and wavederived parameters (i.e. augmentation index), carotid and femoral diameters, blood velocities and elastic modulus, carotid intima-media thickness and aortic pulse wave velocity, were obtained. Two groups were assembled: Reference (without cardiovascular risk factors (CVRFs); n=379) and HBP (n=175). Additionally, subjects were ascribed to groups according to their pSBP z-scores (z-score ≤ 0, 0< z-score < 1 or z-score ≥ 1). Age and sex-related mean and standard deviation equations were obtained for each variable (Reference group). Using those equations, data (entire population) were converted into z-scores. Groups were compared (absolute and z-scored variables) before and after adjusting for cofactors (ANOVA/ANCOVA). Linear regression analyses were done considering: pSBP and z-pSBP (independent) and absolute levels and z-scores for hemodynamic and arterial indexes (dependent variables). Differences in hemodynamic and arterial levels and z-scores variations (dependent) associated with variations in pSBP and z-pSBP (independent variable) were assessed. The slopes of the models for Reference and HBP groups were compared. CONCLUSION: HBP states associate hemodynamic and arterial changes not explained by exposure to other CVRFs, anthropometric or demographic factors. The higher the pSBP deviations from ageand sex-expected mean value in the Reference group, the higher the hemodynamic and arterial indexes deviation. The pSBP-related variations in hemodynamic and arterial indexes would not differ depending on whether HBP states are present or not.

Reprocessamento de artigos de uso único: conhecimento de funcionários do CME / Reprodessing of single-use items: knowledge of supply material staff

Preocupadas com a problemática do reprocessamento de artigos de suso único, as autoras objetivaram verificar o grau de conhecimento de 31 elementos da equipe de enfermagem (24 auxiliares, 4 técnicos e 3 enfermeiros) de um centro de material e esterilização sobre os aspectos legais que envolvem o processamento, bem como quais são os artigos de uso único reprocessados, a existência de controle e os critérios para avaliação desses artigos...