Consensus of the Brazilian association of hematology, hemotherapy and cellular therapy on patient blood management: Assessment and management of coagulation in the preoperative period.

Managing coagulation disorders and potential bleeding risks, especially in the context of anticoagulant medications, is of immense value both clinically and prior to surgery. Coagulation disorders can lead to bleeding complications, affecting patient safety and surgical outcomes. The use of Patient Blood Management protocols offers a comprehensive, evidence-based approach that effectively addresses these challenges. The problem is to find a delicate balance between preventing thromboembolic events (blood clots) and reducing the risk of bleeding. Anticoagulant medications, although crucial to preventing clot formation, can increase the potential for bleeding during surgical procedures. Patient blood management protocols aim to optimize patient outcomes by minimizing blood loss and unnecessary transfusions.

Consensus of the Brazilian association of hematology, hemotherapy and cellular therapy on patient blood management: Assessment and management of coagulation in the preoperative period

Abstract Managing coagulation disorders and potential bleeding risks, especially in the context of anticoagulant medications, is of immense value both clinically and prior to surgery. Coagulation disorders can lead to bleeding complications, affecting patient safety and surgical outcomes. The use of Patient Blood Management protocols offers a comprehensive, evidence-based approach that effectively addresses these challenges. The problem is to find a delicate balance between preventing thromboembolic events (blood clots) and reducing the risk of bleeding. Anticoagulant medications, although crucial to preventing clot formation, can increase the potential for bleeding during surgical procedures. Patient blood management protocols aim to optimize patient outcomes by minimizing blood loss and unnecessary transfusions.

Profile of specific and associated autoantibodies in patients with idiopathic inflammatory myopathies in a Colombian population.

Objectives: Idiopathic inflammatory myopathies (IIMs) are chronic, autoimmune diseases with several forms of presentation. Diagnosis is mostly clinical in our region. Our aim was to evaluate the autoantibody profile of patients with IIMs. Methods: This study is a cross-sectional study with a prospective recollection of data, conducted between 2019-2021, in a single center in Cali, Colombia. Patients with a clinical diagnosis or suspicion of IIM were included. The presence of myositis-specific/associated antibodies was evaluated by immunoblotting in serum samples. Phenotypic characterization was performed. Results: A total of 36 patients were included. The mean age was 50.6 (16.7) years, and 20 (55.6%) were female. Eighteen (50%) patients were seropositive, of which 11 (30.5%) presented one positive antibody, with anti-TIF1É£being the most frequent (n = 4, 11.1%), followed by anti-Ro52 (n = 2, 5.6%). Seven patients (19.4%) showed >1 positive antibody. Dermatomyositis was the most frequent type of IIM in seropositive patients (n = 8, 44.4%), followed by anti-synthetase syndrome (n = 4, 22.2%). Weakness was symmetric and presented in the upper and lower extremities in 11 (61.1%) patients each. Both respiratory insufficiency and weight loss were seen in 7 (38.9%) patients, Gottron papules in six (33.3%) patients, and heliotrope rash, esophageal dysmotility, and myalgia in 5 (27.8%) patients. Pulmonary interstitial disease was seen in 4 (22.2%, with antibodies for anti-Ro52, anti-MDA5 + anti-Jo1 + anti-TIF1É£, anti-MDA5 + anti-SAE1 + anti-NXP2, and anti-cN1A + anti-Ro52) patients, and malignancy was seen in 2 (11.1%) patients (1 with anti-Mi2ß and 1 with anti-TIF1É£ + anti-Mi2α). In all, 7 (19.4%) patients required intensive care (2 seropositive, 1 with anti-PL7, 1 with anti-MDA5 + anti-Jo1 + anti-TIF1É£), and 1 (2.8%) (seronegative) patient died. Conclusion: This study is the first study in the Southwest of Colombia that evaluates myositis-specific/associated antibodies in IIM. Half of the patients were seropositive. Anti-TIF1É£was the most frequent MSA and anti-Ro52 was the most frequent MAA. Several patients presented antibody combinations. Further studies are needed to fully associate phenotypes with antibodies.

Routine Laboratory Tests are not Necessary After Primary Total Joint Arthroplasty: A Prospective Study Utilizing a Selective Algorithmic Approach.

BACKGROUND: Laboratory tests are obtained following total joint arthroplasty (TJA) despite a lack of supporting evidence. No prior study has prospectively analyzed the effect of discontinuing routine laboratory tests. This study aimed to determine whether discontinuing routine laboratory tests in TJA patients resulted in a difference in 90-day complications. METHODS: This was a prospective protocol change study at a high-volume center. Prior to protocol change, patients underwent routine laboratory tests following primary unilateral TJA (control group). After the change, an algorithmic approach was used to selectively order laboratory tests (protocol group). Patients with bleeding disorders, chronic obstructive pulmonary disease, arrhythmia, coronary artery disease, congestive heart failure, chronic renal failure, dementia, abnormal preoperative sodium, potassium, or hemoglobin <10 g/dL were excluded. In-hospital and 90-day data were collected. Student's t-test was used to analyze continuous variables and chi-squared test was used for categorical variables. A pre-hoc analysis examining the primary outcome required 607 patients per group to achieve 80% power. RESULTS: The protocol group included 937 patients, whereas the control group included 891 patients. The protocol group had fewer females and total hip arthroplasties. There were no differences in age, body mass index, American Society of Anesthesiologists classification, tranexamic acid administration, or estimated blood loss between the protocol and control groups. There were also no differences in transfusions, electrolyte corrections, unplanned consults, length of stay, or transfers. The protocol cohort had more fluid boluses and home discharges. There was no difference in 90-day complications between the 2 groups. CONCLUSIONS: This study utilizing an algorithmic approach to laboratory collection demonstrates that discontinuing routine laboratory tests following TJA is safe and effective. We believe this protocol can be implemented for most patients undergoing primary unilateral TJA.

Laboratory profile after mining dam breach: Brumadinho Health Project results / Perfil laboratorial após rompimento de barragem de mineração: resultados do Projeto Saúde Brumadinho

ABSTRACT Objective: To evaluate changes in selected laboratory tests in the population included in the Brumadinho Health Project, according to the exposure to the dam failure. Methods: Cross-sectional study carried out on representative sample of residents (≥12 years) in Brumadinho, Minas Gerais, including: 1) non-exposed; 2) directly affected by tailings sludge; 3) residents in mining area. The prevalence of abnormal results of blood count, total, HDL and LDL cholesterol, triglycerides, aspartate aminotransferase, alanine aminotransferase, creatinine, urea, estimate of glomerular filtration rate (eGFR) and high-sensitivity C-reactive protein (hs-CRP) were estimated. The Prevalence Ratios (PR) and 95% Confidence Intervals (95%CI) of having an abnormal laboratory finding were estimated using Generalized Linear Models with Poisson probability distribution. Crude and adjusted models were estimated for age range, gender, diabetes, body mass index, smoking, hypertension. Results: After adjusting, there was no difference in PR between the three populations for most tests, with the exception of the population residing in an area with mining activity and not directly affected by the mud, with a lower chance of having altered total cholesterol (PR: 0.84; 95%CI 0.74-0.95) and a higher chance of having altered HDL cholesterol (PR: 1.26; 95%CI 1.07-1.50), hs-CRP (PR: 1.19; 95%CI 1.04-1.37), and eGFR <60mL/min/1,73 m2 (PR: 1.51; 95%CI 1.05-2.19). Conclusion: No significant differences were found in the prevalence of biochemical and hematological alterations between the populations directly exposed and not exposed to tailings. Only the group residing in the mining area had a higher prevalence of alterations related dyslipidemia, renal disease, and inflammation.

RESUMO Objetivo: Avaliar alterações em parâmetros laboratoriais na população do Projeto Saúde Brumadinho, segundo exposição ao rompimento da barragem. Métodos: Estudo transversal realizado em amostra representativa de residentes (≥12 anos) em Brumadinho, Minas Gerais, incluindo: não expostos (grupo referência); diretamente atingidos pela lama de rejeitos; e residentes em área de mineração. Foram estimadas as prevalências de resultados alterados de hemograma, colesterol total, colesterol lipoproteína de alta densidade (HDL), colesterol lipoproteína de baixa densidade (LDL), triglicérides, aspartato aminotransferase, alanina aminotransferase, creatinina, ureia, estimativa da taxa de filtração glomerular (TFGe) e proteína C-reativa ultrassensível (PCRus). As razões de prevalência (RP) e os intervalos de confiança de 95% (IC95%) de ter o exame alterado foram estimados por meio de modelos lineares generalizados com distribuição de probabilidade Poisson. Estimaram-se modelos brutos e ajustados por faixa etária, sexo, diabetes, índice de massa corporal, tabagismo, hipertensão. Resultados: Após ajustes, não se observou diferença nas RP entre as populações estudadas para a maioria dos testes, com exceção da população residente em área com atividade de mineração e não diretamente atingida pela lama, com menor chance de ter colesterol total alterado (RP=0,84; IC95% 0,74-0,95) e maior chance de ter colesterol HDL (RP=1,26; IC95% 1,07-1,50) e PCRus (RP=1,19; IC95% 1,04-1,37) alterado e TFGe<60 mL/min/1,73 m2 (RP=1,51; IC95% 1,05-2,19). Conclusão: Não foram encontradas diferenças significativas na prevalência de alterações bioquímicas e hematológicas entre a população diretamente exposta aos rejeitos e a população não exposta. Apenas o grupo residente em área de mineração apresentou maior prevalência de alterações relacionadas com dislipidemia, disfunção renal e inflamação.

The clinical laboratory evolution in coccidioidomycosis detection: Future perspectives.

Coccidioidomycosis is a systemic disease caused by the fungi Coccidioides immitis and C. posadasii. It is a prevalent disease in arid regions with high temperatures and low precipitations in America. Coccidioidomycosis is a highly endemic disease of US-Mexico border states but commonly underdiagnosed. The diagnosis of coccidiomycosis is not easy due to the lack of specific symptoms; it is usually an integral approach, including clinical laboratory tests as an essential part of the diagnosis. Nevertheless, despite various laboratory tests available, affordability can be a limitation, mainly in developing countries. This review's objectives are 1) to learn the different laboratory approaches that arose and their application for clinical diagnosis; 2) to discuss their advantages and weaknesses, and finally, 3) propose what is on the horizon for future advances in clinical laboratory diagnosis of coccidioidomycosis. It has been a long way in laboratory tests evolution to detect coccidioidomycosis from tissue microscopy to Real-Time PCR. However, there is a delay in technology adoption for Coccidioides spp. detection in the clinical laboratory. The molecular Point of Care Testing (POCT) technology has reached us in our trench while research in PCR variants stills on-going. None of the currently existing scientific literature in coccidioidomycosis research has mentioned it. However, this trend in infectious and non-infectious disease diagnosis will continue in that way in order to offer better options for an easy and fast diagnosis. Undoubtedly, the implementation of molecular POCT for Coccidioides spp. would save resources in health care attention and improve access to diagnostic tools.

Exámenes clínicos preoperatorios para la cirugía de catarata / Routine preoperative clinical tests for cataract surgery

La catarata senil es la primera causa de ceguera reversible en el mundo y la cirugía constituye el único método para solucionar esta enfermedad, con alto nivel de seguridad y elevada mejoría en calidad visual y de vida. Por ser una afectación que ocurre en pacientes de la tercera edad, con frecuencia presentan enfermedades sistémicas como hipertensión arterial, diabetes mellitus, enfermedades cardiovasculares, entre otras. Hasta esta fecha se indican exámenes de laboratorio de rutina en el preoperatorio que para algunas instituciones son innecesarios por el bajo riesgo de esta técnica quirúrgica. Se realizó una búsqueda bibliográfica en Pubmed, Cochrane y Google Académico con el objetivo de revisar lo relacionado con la necesidad de efectuar estos exámenes de laboratorio como rutina antes de la cirugía de catarata. Existen pocos artículos referentes al tema, por lo que se seleccionaron los de mayor evidencia científica. Se pudo concluir que no hay evidencia sobre los requerimientos y necesidades de estudios de laboratorio en el preoperatorio, ya que sus resultados no aportan la capacidad de predecir la morbilidad o de cambiar la conducta relacionada con el proceder quirúrgico o anestésico(AU)

Senile cataract is the leading cause of reversible blindness worldwide. Surgery is the only method available to heal this condition, with a high level of safety and considerable improvement in visual quality and quality of life. Being as it is a condition occurring in elderly patients, systemic diseases such as hypertension, diabetes mellitus and cardiovascular diseases, among others, are usually present. Routine preoperative laboratory tests are customarily indicated which some institutions consider unnecessary due to the low risk of this surgical procedure. A bibliographic search was conducted in PubMed, Cochrane and Google Scholar with the purpose of reviewing published information about the need to conduct these laboratory tests as routine practice before cataract surgery. Since few papers about the topic were available, a selection was made of the ones providing the most relevant scientific evidence. It was concluded that no evidence exists about the requirements of and need for preoperative laboratory studies, since their results do not contribute to the ability to predict morbidity or change the conduct related to the surgical or anesthetic procedure(AU)

Inborn Errors of Immunity: how to diagnose them?

Abstract Objectives: Inborn Errors of Immunity are characterized by infectious conditions and manifestations of immune dysregulation. The diversity of clinical phenotypes can make it difficult to direct the laboratory investigation. This article aims to update the investigation of immunological competence in the context of primary defects of the immune system. Source of data: Searches were carried out on Pubmed to review articles published in the last five years, in English, French or Spanish, using the terms "diagnosis" OR "investigation" AND "immunodeficiency" or "primary immunodeficiency" or "inborn errors of immunity" NOT "HIV". Recent textbook editions have also been consulted. Summary of findings: The immune system competence investigation should be started based on clinical phenotypes. Relevant data are: characterization of infectious conditions (location, recurrence, types of infectious agents, response to treatment), age during symptom onset and associated manifestations (growth impairment, allergy, autoimmunity, malignancies, fever and signs of inflammation without the identification of infection or autoimmunity) and family history. These data contribute to the selection of tests to be performed. Conclusions: The diagnostic investigation of Inborn Errors of Immunity should be guided by the clinical characterization of patients, aiming to optimize the use of complementary tests. Many diagnoses are attained only through genetic tests, which are not always available. However, the absence of a diagnosis of certainty should never delay the implementation of therapeutic measures that preserve patient life and health.

Inborn Errors of Immunity: how to diagnose them?

OBJECTIVES: Inborn Errors of Immunity are characterized by infectious conditions and manifestations of immune dysregulation. The diversity of clinical phenotypes can make it difficult to direct the laboratory investigation. This article aims to update the investigation of immunological competence in the context of primary defects of the immune system. SOURCE OF DATA: Searches were carried out on Pubmed to review articles published in the last five years, in English, French or Spanish, using the terms "diagnosis" OR "investigation" AND "immunodeficiency" or "primary immunodeficiency" or "inborn errors of immunity" NOT "HIV". Recent textbook editions have also been consulted. SUMMARY OF FINDINGS: The immune system competence investigation should be started based on clinical phenotypes. Relevant data are: characterization of infectious conditions (location, recurrence, types of infectious agents, response to treatment), age during symptom onset and associated manifestations (growth impairment, allergy, autoimmunity, malignancies, fever and signs of inflammation without the identification of infection or autoimmunity) and family history. These data contribute to the selection of tests to be performed. CONCLUSIONS: The diagnostic investigation of Inborn Errors of Immunity should be guided by the clinical characterization of patients, aiming to optimize the use of complementary tests. Many diagnoses are attained only through genetic tests, which are not always available. However, the absence of a diagnosis of certainty should never delay the implementation of therapeutic measures that preserve patient life and health.

Non-specific blood tests as proxies for COVID-19 hospitalisation: are there plausible associations after excluding noisy predictors?

This study applied causal criteria in directed acyclic graphs for handling covariates in associations for prognosis of severe coronavirus disease 2019 (COVID-19) cases. To identify non-specific blood tests and risk factors as predictors of hospitalisation due to COVID-19, one has to exclude noisy predictors by comparing the concordance statistics (area under the curve - AUC) for positive and negative cases of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). Predictors with significant AUC at negative stratum should be either controlled for their confounders or eliminated (when confounders are unavailable). Models were classified according to the difference of AUC between strata. The framework was applied to an open database with 5644 patients from Hospital Israelita Albert Einstein in Brazil with SARS-CoV-2 reverse transcription - polymerase chain reaction (RT-PCR) exam. C-reactive protein (CRP) was a noisy predictor: hospitalisation could have happened due to causes other than COVID-19 even when SARS-CoV-2 RT-PCR is positive and CRP is reactive, as most cases are asymptomatic to mild. Candidates of characteristic response from moderate-to-severe inflammation of COVID-19 were: combinations of eosinophils, monocytes and neutrophils, with age as risk factor; and creatinine, as risk factor, sharpens the odds ratio of the model with monocytes, neutrophils and age.

Identification of Clinical and Laboratory Variables Associated with Cardiotoxicity Events Due to Doxorubicin in Breast Cancer Patients: A 1-Year Follow-Up Study.

Cardiovascular adverse events in patients with breast cancer undergoing chemotherapy (CT) are frequent due to the high cardiotoxic potential of treatments, especially doxorubicin (DOXO). This study aimed to evaluate the association of plasma levels of various biomarkers with cardiotoxicity in women with breast cancer on DOXO-based chemotherapy. In this single center prospective cohort, 80 breast cancer patients who used DOXO as a first-line treatment for cancer were evaluated. Patients were assessed at three time points: before CT (T0), 1 week after (T1) and 12 months after DOXO treatment (T2). The predominant histological classification was ductal carcinoma, n = 72 (90.0%); the most frequent molecular classification was Human epidermal growth factor receptor-type 2 positive (HER2+), n = 34 (43.0%). In patients submitted to complementary treatment with trastuzumab (n = 23), there was no association with cardio-specific biomarkers. Evaluating the clinical variables and the laboratory parameters in T1 and T2 in relation to T0, the reduction any time of N-terminal-pro hormone B-type natriuretic peptide (NT-proBNP), triglycerides and hematocrit levels showed an association with higher cardiotoxicity risk. In addition, increased levels of troponin I (cTnI) and glycated hemoglobin (HbA1c) showed an independent association with the occurrence of cardiotoxicity. These results suggest that the evaluation of these laboratory tests should be included routinely to identify breast cancer patients under DOXO treatment at cardiotoxicity risk.

Divergent: Age, Frailty, and Atypical Presentations of COVID-19 in Hospitalized Patients.

BACKGROUND: Although frailty has been associated with atypical manifestations of infections, little is known about COVID-19 presentations in hospitalized frail patients. We aimed to investigate the association between age, frailty, and clinical characteristics of COVID-19 in hospitalized middle-aged and older adults. METHOD: Longitudinal observational study comprising 711 patients aged ≥50 years consecutively admitted to a university hospital dedicated to COVID-19 severe cases, between March and May 2020. We reviewed electronic medical records to collect data on demographics, comorbidities, COVID-19 signs/symptoms, and laboratory findings on admission. We defined frailty using the Clinical Frailty Scale (CFS = 1-9; frail ≥5). We also documented in-hospital mortality. We used logistic regressions to explore associations between age, frailty, and COVID-19 signs/symptoms; and between typical symptoms (fever, cough, dyspnea) and mortality. RESULTS: Participants had a mean age of 66 ± 11 years, and 43% were female. Overall, 25% were frail, and 37% died. The most common COVID-19 presentations were dyspnea (79%), cough (74%), and fever (62%), but patients aged ≥65 years were less likely to have a co-occurrence of typical symptoms, both in the absence (OR = 0.56; 95% CI = 0.39-0.79) and in the presence of frailty (OR = 0.52; 95% CI = 0.34-0.81). In contrast, older age and frailty were associated with unspecific presentations, including functional decline, acute mental change, and hypotension. After adjusting for age, sex, and frailty, reporting fever was associated with lower odds of mortality (OR = 0.70; 95% CI = 0.50-0.97). CONCLUSIONS: Atypical COVID-19 presentations are common in frail and older hospitalized patients. Providers should be aware of unspecific disease manifestations during the management and follow-up of this population.

Suspected infection, absenteeism at work and testing for COVID-19 among nursing professionals / Sospecha de infección, ausentismo laboral y pruebas de detección de COVID-19 entre profesionais de enfermería / Suspeita de infecção, abstenção no trabalho e testagem para COVID-19 entre profissionais de enfermagem

ABSTRACT Objective: to identify the occurrence of the factors associated with: (1) suspected infection by the virus that causes COVID-19; (2) absenteeism at work due to suspected infection or diagnosis of infection by the virus that causes COVID-19; and (3) performance of tests for the screening of infection by the virus that causes COVID-19 among Nursing professionals. Method: a cross-sectional study conducted with 890 nurses in June and July 2020. The associations between the outcomes and the other variables were explored using Poisson regression models with robust variance estimators. Results: occurrence of the outcomes was (1) 35.5%, (2) 16.2% and (3) 38.2%, respectively. For suspected infection, associations were observed with assessment of the working conditions as deficient (RR: 1.55; 95% CI: 1.21-1.99) and with lack of Personal Protective Equipment (RR: 1.27; 95% CI: 1.06-1.51). Absenteeism at work was associated with the adoption of moderate social distancing (RR: 1.49; 95% CI: 1.00-2.21). To perform the screening tests, the associations with links to outpatient (RR: 2.47; 95% CI: 1.52-4.01) and hospital (RR: 2.49; 95% CI: 1.60-3.89) services stood out, in addition to direct contact with patients with confirmed COVID-19 diagnoses (RR: 1.65; 95% CI: 1.33-2.05). Conclusion: despite the high occurrence of suspected infection and a considerable incidence of absenteeism at work among professionals from the various services under study, disparity in access to the screening tests was evidenced, especially with regard to the professionals who work in Primary Care.

RESUMEN Objetivo: identificar la incidencia y los factores asociados con: (1) sospecha de infección por el virus que causa COVID-19; (2) ausencia laboral debido a sospecha o diagnóstico de infección por el virus que causa COVID-19; y (3) pruebas para detectar la infección por el virus que causa COVID-19 entre profesionales de Enfermería. Método: estudio transversal realizado con 890 profesionales de Enfermería durante los meses de junio y julio de 2020. Las asociaciones entre los resultados y las demás variables se estudiaron por medio de modelos de regresión de Poisson con estimadores robustos de varianza. Resultados: la incidencia de los resultados fue: (1) 35,5%, (2) 16,2% y (3) 38,2%. Para la sospecha de infección, se observaron asociaciones con condiciones de trabajo evaluadas como deficientes (RR: 1,55; IC 95%: 1,21-1,99) y con la falta de Equipos de Protección Personal (RR: 1,27; IC 95%: 1,06-1,51). La ausencia laboral se asoció con la adopción de distanciamiento social moderado (RR: 1,49; IC 95%: 1,00-2,21). Para llevar adelante las pruebas de detección, se destacaron las asociaciones con la vinculación a servicios ambulatorios (RR: 2,47; IC 95%: 1,52-4,01) y hospitalarios (RR: 2,49; IC 95%: 1,60-3,89), además del contacto directo con pacientes con diagnósticos confirmados da COVID-19 (RR: 1,65; IC 95%: 1,33-2,05). Conclusión: pese a la elevada incidencia de sospechas de infección y una considerable cantidad de ausencias laborales entre profesionales de los diversos servicios estudiados, se evidenció cierta disparidad en el acceso a las pruebas de detección, especialmente en lo que se refiere a los profesionales de Atención Primaria.

RESUMO Objetivo: identificar a ocorrência e os fatores associados a: (1) suspeita de infecção pelo vírus causador da COVID-19; (2) abstenção no trabalho devido a suspeita ou ao diagnóstico de infecção pelo vírus causador da COVID-19 e (3) realização de testes para o rastreio de infecção pelo vírus causador da COVID-19 entre profissionais de Enfermagem. Método: estudo transversal realizado com 890 enfermeiros entre os meses de junho e julho de 2020. As associações entre os desfechos e as demais variáveis foram exploradas com a utilização de modelos de regressão de Poisson com estimadores robustos de variância. Resultados: a ocorrência dos desfechos foi de (1) 35,5%, (2) 16,2% e (3) 38,2%. Para a suspeita de infecção, foram observadas associações com a avaliação das condições de trabalho como ruins (RR: 1,55; IC 95%: 1,21-1,99) e a falta de equipamentos de proteção individual (RR: 1,27; IC 95%: 1,06-1,51). A abstenção do trabalho esteve associada com a adoção de distanciamento social moderado (RR: 1,49; IC 95%: 1,00-2,21). Para a realização de testes de rastreio, destacam-se as associações com a vinculação a serviços ambulatoriais (RR: 2,47; IC 95%: 1,52-4,01) e hospitalares (RR: 2,49; IC 95%: 1,60-3,89), além do contato direto com pacientes confirmadamente acometidos pela COVID-19 (RR: 1,65; IC 95%: 1,33-2,05). Conclusão: apesar da elevada ocorrência de suspeitas de infecção e um número considerável de abstenção do trabalho entre profissionais dos diversos serviços estudados, foi evidenciada uma disparidade no acesso aos testes de rastreio, especialmente no que se refere aos profissionais da Atenção Primária.

Increasing molecular diagnostic capacity and COVID-19 incidence in Brazil.

Different countries have adopted strategies for the early detection of SARS-CoV-2 since the declaration of community transmission by the World Health Organization (WHO) and timely diagnosis has been considered one of the major obstacles for surveillance and healthcare. Here, we report the increase of the number of laboratories to COVID-19 diagnosis in Brazil. Our results demonstrate an increase and decentralisation of certified laboratories, which does not match the much higher increase in the number of COVID-19 cases. Also, it becomes clear that laboratories are irregularly distributed over the country, with a concentration in the most developed state, São Paulo.

The sensitivity, specificity, and agreement of a point of care method: an assessment of the diagnostic accuracy / Sensibilidade, especificidade e concordância do método point of care: um estudo de precisão diagnóstica

Abstract The use of new technologies can improve screening in communities with difficult access to health. This article aims to evaluate the sensitivity, specificity, and agreement of a point of care test in comparison to laboratory methods for the determination of glucose (GLI), triglyceride (TG), and total cholesterol (TC) concentrations. This prospective study used data from the remaining adult population of quilombolas in Brazil. Laboratory tests using conventional methods for the analysis of venipuncture samples were used as a standard method to measure the concentrations of GLI (mg/dL), TG (mg/dL), and TC (mg/dL) and compared to the metered dose from the collection of fingertip capillary blood (point of care). Contingency tables (2x2) were used to estimate the sensitivity and specificity of the methods. Lin and Bland & Altman coefficients were used to statistically assess agreement, the level of significance was 5%. There was substantial agreement between the methods for measuring TG and poor agreement for of TC and GLI. Analysis of the Bland & Altman coefficients revealed that the fingertip method did not produce good measures. The point of care method did not offer a good ability to measure compared to that of the reference laboratory method.

Resumo O uso de novas tecnologias pode melhorar o screening em comunidades de difícil acesso à saúde. O objetivo deste artigo é avaliar a sensibilidade, especificidade e concordância do teste de point of care em comparação com método laboratorial para dosagem de Glicose (GLI), Triglicerídeo (TG) e Colesterol total (CT). Estudo prospectivo com dados de população de adultos remanescentes de quilombolas no Brasil. Exames laboratoriais convencionais para análise foram obtidos por venopunção, utilizados como método padrão para mensuração das concentrações de GLI (mg/dL), TG (mg/dL) e CT (mg/dL) e comparados a mensuração por meio de técnica de ponta de dedo (point of care). Tabelas de contingência (2x2) foram utilizadas para estimar sensibilidade e especificidade dos métodos e o coeficiente de Lin e análises de Bland & Altman foram métodos de concordância com nível de significância de 5%. Houve concordância substancial entre os métodos para mensuração de TG e fraca concordância para mensuração de CT e GLI. Os coeficientes de Bland & Altman indicam que o método de ponta de dedo não apresentou boa mensuração. O método point of care não apresentou boa capacidade de mensuração de Glicose, Triglicerídeo e Colesterol total tendo como referência o método laboratorial.

Longitudinal analysis of laboratory tests in a population-based study / Análise longitudinal da qualidade dos exames laboratoriais em um estudo de base populacional

ABSTRACT Clinical laboratories must have quality management systems that guarantee the reliability of their results. Furthermore, in longitudinal studies, it is important that the generated data be analyzed over time, as an additional measure of quality control (QC), seeking to identify fluctuations not explainable by biological variables. Applying this strategy to the SHIP-Brazil study was the aim of this work. Thus, we analyzed the results of fasting glucose, post-load glucose and glycated hemoglobin in the participants of the SHIP-Brazil study, from July 2014 to November 2016, in relation to the following aspects: difference of each individual's results from the mean of the month over time, mean and median of results over time, and percentage of results above the reference values over time, with trend line. According to the observed data, in order to guarantee the correct association of laboratory parameters with different health and disease conditions, the fasting blood glucose and post-load glucose measurements in the samples collected during the first months of the study are consistent, despite being performed in two different facilities. This QC strategy has proved very useful, and may even be used by clinical laboratories in their routine, observing result fluctuations of their population in the course of time, being capable of eventually detect bias even before the routine practices of internal and external quality control.

RESUMEN Los laboratorios clínicos deben tener sistemas de gestión de calidad que garanticen la fiabilidad de los resultados. Además, en estudios longitudinales, es importante que los datos generados sean analizados a lo largo del tempo, como medida adicional de control de calidad (QC), buscando identificar fluctuaciones no explicables por variables biológicas. Aplicar esa estrategia al estudio SHIP-Brasil es el objetivo de este trabajo. Analizamos los resultados de glucemia en ayunas, prueba de sobrecarga de glucosa y hemoglobina glucada en los participantes del estudio SHIP-Brasil, en el período de julio de 2014 a noviembre de 2016, acerca de los siguientes aspectos: diferencia de los resultados de cada individuo con respecto a la media del mes con el tiempo; media y mediana de los valores con el tiempo; y porcentaje de resultados por encima de los valores de referencia con el tempo, con línea de tendencia. Según los datos observados, las mediciones de glucemia en ayunas y tras una sobrecarga de glucosa, en las muestras recolectadas en los primeros meses de estudio, resultan consistentes, a pesar de haber sido realizadas en dos laboratorios distintos. Esa estrategia de QC se presentó muy útil y puede, incluso, ser utilizada por laboratorios clínicos en su rutina, observando fluctuaciones de resultados de su población a lo largo del tiempo, detectando, eventualmente, desviaciones aún antes de las prácticas rutinarias de control interno y externo de calidad.

RESUMO Os laboratórios clínicos devem ter sistemas de gestão da qualidade que garantam a fidedignidade dos resultados. Ainda, em estudos longitudinais, é importante que os dados gerados sejam analisados ao longo do tempo, como medida adicional de controle de qualidade (CQ), buscando identificar flutuações não explicáveis por variáveis biológicas. Aplicar essa estratégia ao estudo SHIP-Brasil foi o objetivo deste trabalho. Analisamos os resultados de glicemia em jejum, glicemia pós-sobrecarga e hemoglobina glicada nos participantes do estudo SHIP-Brasil, no período de julho de 2014 a novembro de 2016, em relação aos seguintes aspectos: diferença dos resultados de cada indivíduo em relação à média do mês ao longo do tempo; média e mediana dos valores ao longo do tempo; e porcentagem de resultados acima dos valores de referência ao longo do tempo, com linha de tendência. De acordo com os dados observados, as dosagens de glicemia em jejum e glicemia pós-sobrecarga, nas amostras coletadas nos primeiros meses de estudo, apresentam-se consistentes, mesmo tendo sido realizadas em dois laboratórios distintos. Essa estratégia de CQ mostrou-se bastante útil e pode, inclusive, ser utilizada pelos laboratórios clínicos em sua rotina, observando as flutuações de resultados de sua população ao longo do tempo, detectando, eventualmente, desvios antes mesmo das práticas rotineiras de controle interno e externo da qualidade.

Avaliação de marcadores sorológicos treponêmicos e não-treponêmicos em doadores inaptos para sífilis atendidos em um hemocentro brasileiro / Evaluation of treponemal and non-treponemal serological markers in unfit blood donors for syphilis in a brazilian blood center

Introdução: A sífilis é uma doença infecciosa sistêmica de evolução crônica, causada pela bactéria Treponema pallidum, que pode ser transmitida por transfusões de sangue. A avaliação dos marcadores sorológicos na triagem para sífilis em doadores de sangue é fundamental para confirmar se o sangue doado pode estar contaminado com T. pallidum ou se há descarte por reações inespecíficas. Métodos: A população foi composta por doadores de sangue atendidos em todas as unidades do Hemopa, que atenderam aos critérios do estudo. Houve análise dos resultados obtidos através do VDRL e ELISA e informações socioeconômicas sobre a população: sexo, idade, escolaridade e estado civil, obtidos a partir do registro de doadores. Resultados: Durante o período do estudo, houve 103.187 doações de sangue. Um total de 883 doadores foram considerados inaptos para sífilis no teste de triagem (0,86%) e 271 pessoas (30,69%) compareceram ao hemocentro para realização de testes confirmatórios: 50,6% homens; 49,4% mulheres; idade média de 34 anos. Mais da metade declarou ter ensino médio completo e a maioria (75,6%) relatou ser solteiros. Mais de 50% dos doadores apresentaram titulação menor que 1/16; 91,5% também apresentou reatividade em ELISA. 15 pessoas (5,5%) apresentaram outro resultado reagente além da sífilis. Conclusão: Houve mais de 90% de resultados concordantes entre teste treponêmico e não treponêmico em nossa triagem laboratorial. Esses resultados podem auxiliar instituições na estratégia de triagem para sífilis em doadores de sangue. (AU)

Introduction: Syphilis is a chronic systemic infectious disease caused by Treponema pallidum, which can be transmitted by blood transfusions. The evaluation of serological markers for syphilis screening in blood donors is crucial to confirm whether the donated blood may be contaminated with T. pallidum or if it is discarded by nonspecific reactions. The aim of this study was to describe results obtained between nontreponemal and treponemal serological tests and sociodemographic profile of blood donors in a Brazilian blood center. Methods: The population consisted of all blood donors attended at Fundação Hemopa, who met the study criteria. The results obtained through the VDRL and ELISA tests, as well as socioeconomic information about the population ­ gender, age, education and marital status ­ were analyzed. Results: During the study period, there were 103,187 blood donations. 883 donors were considered unfit for syphilis in the screening test (0.86%) and 271 of these (30.69%) attended the blood center for confirmatory testing: 50.6% men; 49.4% women; average age 34 years. More than half reported having completed high school and 75.6% reported being single. More than 50% of donors had titers less than 1/16; 91.5% also had ELISA reactivity. Fifteen people (5.5%) presented another reagent result in serological screening besides syphilis. Conclusions: There were more than 90% concordant results between treponemal and non-treponemal testing in our laboratory screening. These results may assist institutions in the screening strategy for syphilis in blood donors. (AU)

Interpretación de las pruebas diagnósticas de sífilis en gestantes / Interpretación de las pruebas diagnósticas de sífilis en gestantes Interpretation of diagnostic tests for syphilis in pregnant women

In much of the American continent and particularly in Peru, gestational syphilis is a public health problem, which is particularly important because of the risk of infection to the fetus. Because of this, it is essential to use commonly used immunological tests that are vital to define the diagnosis and timely administration of the antibiotic treatment. The objective of this review is to disseminate the general characteristics of these tests, and their correct use and interpretation, according to current protocols.

En gran parte del continente americano y en el Perú en particular, la sífilis gestacional es un problema de salud pública, que adquiere particular importancia por el riesgo de la infección al feto, por lo que es indispensable la adecuada utilización de las pruebas inmunológicas de uso común, que son vitales para definir el diagnóstico y la administración oportuna del tratamiento antibiótico. El objetivo de esta revisión es difundir las características generales de dichas pruebas y su correcto empleo e interpretación, según los protocolos vigentes.

Neurosífilis: un problema antiguo que no pierde actualidad / Neurosyphilis: an Age-old Problem that is Still Relevant Today

Resumen La neurosífilis es una presentación clínica de la sífilis y puede suceder en estadios tempranos o tardíos de la infección. Aunque el tratamiento específico para todas las formas clínicas de la sífilis existe desde hace mucho tiempo, los estadios avanzados de la enfermedad aún son prevalentes, con las secuelas neurológicas irreversibles que ocasionan. Este artículo revisa la evidencia actual, los métodos diagnósticos y el tratamiento específico para la sífilis terciaria.

Abstract Neurosyphilis is the clinical manifestation of syphilis that can arise during either the early or late stages of infection. Even though dedicated treatment for all clinical forms of syphilis has been available for many years, the advanced stages of the disease are still prevalent, with irreversible sequelae. This article reviews the current evidence, diagnostic methods and specific treatment for tertiary syphilis.