A System for Structuring, Storage and Georeferenciation of Dengue Vector Surveillance Data.

Dengue is a main public health issue around the world and is an epidemic in Brazil. As part of the Brazilian national program to fight the disease, every municipality has a Zoonosis Control Center responsible for health and case surveillance, among other actions. The fieldwork includes routine visiting of houses and strategic sites (e.g. industries and vacant lands), water sampling, container elimination, and larvicide administration. However, the field data are gathered and summarized by hand. In this work, our goal is to ease the collection and visualization of field data to support decision-making. We have developed a mobile system to collect and georeference field data which could then be used to build geospatial and geo-temporal visualizations of indices such as House, Container, and Breteau1 indices. This solution could enhance entomological surveillance and leverage action planning and evaluation.

Proposed panel of diagnostic tools for accurate temporal classification of symptomatic T. gondii infection.

Serological tests available for the diagnosis of acute Toxoplasma gondii infection have limitations in establishing the temporal diagnosis of acute toxoplasmosis. The present analytical-descriptive investigation comprises of a prospective longitudinal cohort study to search for accurate biomarkers to distinguish acute, early and late convalescent T. gondii infection. Classic methods (immunofluorescence-IFA along with Enzyme-linked immunosorbent-ELISA and fluorescent-ELFA assays) for IgM, IgA, IgG and IgG avidity were employed in parallel with flow cytometry-based anti-fixed T. gondii tachyzoites serology (FC-AFTA-IgM, IgG, IgG avidity and IgG subclasses). The results reemphasized the limitations of IgM & IgG IFA, IgG ELFA, IgG & IgG subclasses FC as well as IgA ELISA biomarkers for the temporal diagnosis of acute toxoplasmosis. Receiver Operating-characteristics features (ROC-curves) were employed to adjust conventional cut-offs aiming at establishing a novel protocol to discriminate more accurately the different phases of toxoplasmosis. Conversely, IgM presented high diagnostic co-positivity for acute toxoplasmosis (97% for ELISA, 96% for ELFA and 95% for FC-AFTA) along with moderate co-negativity for detection of late convalescent toxoplasmosis (82%, 76% and 79%, respectively). IgG avidity (ELFA and FC-AFTA) outstand with the highest performance indices with 91% and 96% co-negativity for assessing acute toxoplasmosis and 91% and 98% co-positivity for late convalescent toxoplasmosis, respectively. Multivariate analysis generated a three-step algorithm comprising IgM ELFA screening followed by ELFA and FC-AFTA IgG avidity with high accuracy in discriminating acute from late convalescent infection. Together, these findings demonstrate the applicability of the proposed panel of diagnostic tools for accurate temporal classification of T. gondii infection.

Human leptospirosis: occurrence of serovars of Leptospira spp. in the state of Minas Gerais, Brazil, from 2008 to 2012

Abstract Background: Leptospirosis is an infectious and acute disease caused by Leptospira spp. that have high epidemic potential. This study verified the main Leptospira spp. serovars detected by MAT from serum of patients with suspicion of leptospirosis from 2008 to 2012 in Minas Gerais State. Methods: The laboratory received sera from 4654 patients. All serum were screened by IgM-ELISA according to the manufacturer's instructions. Each sample reactive or indeterminate were tested against twenty-four serovars of Leptospira by MAT. Results: In this study, 597 patients were classified as reactive on MAT. Only 301 patients were confirmed by laboratory test. It was not possible confirmation by laboratory diagnosis of 296 patients. Among the samples classified as reactive on MAT, 273 patients exhibited titers bigger than 800 for one or more serovars; seroconversion was detected in 28 cases. Percentage of 85.1% of the samples reactive on MAT corresponded to males, 39.4% corresponded to patients aged between 20 and 39 years old. The most common serovars found were Icterohaemorrhagiae, Andamana, Patoc, Tarassovi, Copenhageni, Hardjo and Australis. Concerning the samples that exhibited titers bigger than 800, serovar Icterohaemorrhagiae was also the most common, followed by Copenhageni, Andamana, Patoc, Tarassovi, Grippotyphosa and Canicola. In this study, 40% of the cases occurred to the metropolitan area, state capital and 34 neighboring towns. Conclusion: Our results show the possibly spreading serovars in Minas Gerais State and contribute to knowledge of human leptospirosis, aiming at improving the prevention, control of the disease, as well as the treatment of infected patients.

Human leptospirosis: occurrence of serovars of Leptospira spp. in the state of Minas Gerais, Brazil, from 2008 to 2012.

BACKGROUND: Leptospirosis is an infectious and acute disease caused by Leptospira spp. that have high epidemic potential. This study verified the main Leptospira spp. serovars detected by MAT from serum of patients with suspicion of leptospirosis from 2008 to 2012 in Minas Gerais State. METHODS: The laboratory received sera from 4654 patients. All serum were screened by IgM-ELISA according to the manufacturer's instructions. Each sample reactive or indeterminate were tested against twenty-four serovars of Leptospira by MAT. RESULTS: In this study, 597 patients were classified as reactive on MAT. Only 301 patients were confirmed by laboratory test. It was not possible confirmation by laboratory diagnosis of 296 patients. Among the samples classified as reactive on MAT, 273 patients exhibited titers bigger than 800 for one or more serovars; seroconversion was detected in 28 cases. Percentage of 85.1% of the samples reactive on MAT corresponded to males, 39.4% corresponded to patients aged between 20 and 39 years old. The most common serovars found were Icterohaemorrhagiae, Andamana, Patoc, Tarassovi, Copenhageni, Hardjo and Australis. Concerning the samples that exhibited titers bigger than 800, serovar Icterohaemorrhagiae was also the most common, followed by Copenhageni, Andamana, Patoc, Tarassovi, Grippotyphosa and Canicola. In this study, 40% of the cases occurred to the metropolitan area, state capital and 34 neighboring towns. CONCLUSION: Our results show the possibly spreading serovars in Minas Gerais State and contribute to knowledge of human leptospirosis, aiming at improving the prevention, control of the disease, as well as the treatment of infected patients.

Procalcitonin-guided protocol is not useful to manage antibiotic therapy in febrile neutropenia: a randomized controlled trial.

Febrile neutropenia (FN) requires immediate use of antibiotics (ATB), and procalcitonin (PCT) is proven to be useful in guiding antibiotic therapy in different settings. This study investigated the use of PCT as a guide for the duration of ATB in FN. A randomized controlled trial was carried out from January-December 2010. A total of 62 hematological adult patients with FN were randomized, in 1:1 ratio, into two groups: (1) PCT group: length of ATB guided by institutional protocol plus PCT dynamics, and (2) control group: duration of ATB in accordance with institutional protocol. There was no difference between groups regarding the use of ATB for the first episode of fever (HR 1.14, 95 % CI 0.66-1.95, p = 0.641), with equivalent median duration of ATB therapy (PCT group 9.0 days and control group 8.0 days, p = 0.67), and median number of days without ATB (0 days, IQR 0-2 days for both groups, p = 0.96). We observed no difference in clinical cure rate (p = 0.68), infection relapse (p = 1.0), superinfection (p = 0.85), length of hospitalization (p = 0.64), and mortality at 28 days (p = 0.39) and at 90 days (p = 0.72). Considering the cut-off of 0.5 ng/ml, PCT was correlated with bacteremia (sensitivity of 51.9 % and specificity of 76.5 %). In this randomized controlled trial, adding a PCT-guided protocol to the standard recommendations did not reduce the use of antibiotics in febrile neutropenia, although no apparent harm was caused. PCT proved to be a marker of bacteremia in this setting.

Phenotypic and genotypic diversity of multidrug-resistant Pseudomonas aeruginosa Isolates from bloodstream infections recovered in the Hospitals of Belo Horizonte, Brazil.

BACKGROUND: Pseudomonas aeruginosa commonly causes nosocomial bloodstream infections and the emergence of a variety of ß-lactamases (BLs) is worrying. In 5 hospitals in Belo Horizonte, Brazil, the presence of phenotypes encoding BL genes was established and the genetic diversity of the P. aeruginosa strains recovered from bloodstream infections was analyzed. MATERIALS AND METHODS: The isolates were investigated using a disk diffusion (DD) method and the Etest, for encoding metallo-ß-lactamases (MBLs), oxacillinases and cephalosporinases. Genes and genetic diversity were evaluated by random amplified polymorphic DNA (RAPD) genotyping and enterobacterial repetitive intergenic consensus (ERIC)-PCR. RESULTS: Twelve strains (30%) were positive for MBLs by Etest and DD, 15 were cephalosporinase-positive and 87.5% were positive for blaSPM-1 and blaVIM-1. Twenty-three strains (57.5%) were grouped into profile A, 32.5% into profile B and 10% into profile C by RAPD genotyping. ERIC-PCR revealed a varying degree of similarity between strains, ranging from 45 to 100%. CONCLUSIONS: The results suggest distinct clonal populations in the 5 hospitals studied, indicating a potentially problematic epidemiological situation in Belo Horizonte, Brazil.

Resistance markers and genetic diversity in Acinetobacter baumannii strains recovered from nosocomial bloodstream infections.

In this study, phenotypic and genotypic methods were used to detect metallo-ß-lactamases, cephalosporinases and oxacillinases and to assess genetic diversity among 64 multiresistant Acinetobacter baumannii strains recovered from blood cultures in five different hospitals in Brazil from December 2008 to June 2009. High rates of resistance to imipenem (93.75%) and polymyxin B (39.06%) were observed using the disk diffusion (DD) method and by determining the minimum inhibitory concentration (MIC). Using the disk approximation method, thirty-nine strains (60.9%) were phenotypically positive for class D enzymes, and 51 strains (79.6%) were positive for cephalosporinase (AmpC). Using the E-test, 60 strains (93.75%) were positive for metallo-ß-lactamases (MßLs). All strains were positive for at least one of the 10 studied genes; 59 (92.1%) contained blaVIM-1, 79.6% contained blaAmpC, 93.7% contained blaOXA23 and 84.3% contained blaOXA51. Enterobacteria Repetitive Intergenic Consensus (ERIC)-PCR analysis revealed a predominance of certain clones that differed from each other. However, the same band pattern was observed in samples from the different hospitals studied, demonstrating correlation between the genotypic and phenotypic results. Thus, ERIC-PCR is an appropriate method for rapidly clustering genetically related isolates. These results suggest that defined clonal clusters are circulating within the studied hospitals. These results also show that the prevalence of MDR A. baumannii may vary among clones disseminated in specific hospitals, and they emphasize the importance of adhering to appropriate infection control measures.

Abordagem geral do choque anafilático / General approach to anaphylactic shock

Anafilaxia é uma reação de hipersensibilidade potencialmente grave, mediada por imunoglobulinas E e G, após exposição a antígeno em pessoas previamente sensibilizadas. As manifestações clínicas que provoca são multissitêmicas e inespecíficas, o que dificulta o seu diagnostico, podendo evoluir para colapso cardiovascular e insuficiência respiratória. O choque anafilático é distributivo, com importante componente hipovolêmico. A suspeição clínica imediata é fundamental, pois tem impacto no sucesso do tratamento. Este artigo objetiva rever o tema, ressaltando não apenas os sinais e sintomas clínicos e medicamentos usados, como também correlacionar a fisiopatologia com o tratamento e enfatizar a importância da prevenção adequada de novos episódios, para redução da sua incidência e morbidade.

Anaphylaxis is a potentially serious hypersensitivity reaction mediated by E and G-types immunoglobulin after exposition to antigen in previously sensitized people. It is hard to diagnose, as its clinical manifestations are unspecific and multisystemic. It can, however, progress to cardiovascular collapse and respiratory insufficiency. The anaphylactic shock is distributive, with an important hypovolemic component. Immediate clinical suspicion is crucial for treatment success. This paper aims to provide a review of the topic and highlight not only the drugs and clinical signals and symptoms, but also correlate physiopathology and treatment. It also aims to emphasize the importance of appropriate prevention of new events in order to reduce incidence and morbidity.

Flow cytometry-based algorithm to analyze the anti-fixed Toxoplasma gondii tachyzoites IgM and IgG reactivity and diagnose human acute toxoplasmosis.

In the present study we evaluated the performance of a flow cytometry-based algorithm as a new serological approach to detect antibodies to T. gondii and specific IgG avidity to diagnose acute toxoplasmosis. The results showed that using FC-AFTA-IgM assay, all serum samples from patients with acute toxoplasmosis demonstrated seropositivity, whereas 90% of patients with chronic infection and 100% of non-infected individuals presented negative results. Thus, only 10% of patients with chronic toxoplasmosis showed residual IgM, in contrast with other methodologies used to diagnosis acute toxoplasmosis. On the order hand, FC-AFTA-IgG assay as well as FC-AFTA-IgG subclasses is unlikely to discriminate acute from chronic toxoplasmosis. We have also evaluated the performance of FC-AFTA-IgG avidity as a tool to exclude chronic toxoplasmosis in patients with positive FC-AFTA-IgM. Our data showed an excellent performance of FC-AFTA-IgG avidity employing the cut-off of 60% for Avidity Index (AI) with sensitivity and specificity of 100%. All serum samples from patients presenting acute toxoplasmosis showed low avidity index (AI≤60%), whereas all chronic patients showed high avidity index (AI>60%). The outstanding performance indexes of this novel flow cytometry-based algorithm support its use as a non-conventional alternative serological approach to diagnose human acute toxoplasmosis.

Differentially regulated proteins in Prevotella intermedia after oxidative stress analyzed by 2D electrophoresis and mass spectrometry.

Prevotella intermedia is a rod-shaped, Gram-negative anaerobic bacterium found in human indigenous microbiota that plays an important role in opportunistic infections. The successful colonization depends on the ability of anaerobes to respond to oxidative stress (OS) in oxygenated tissues as well as to resist oxidative events from the host immune system until anaerobic conditions are present at the infection site. As knowledge of the mechanisms of protection against OS in Prevotella is limited, studies are needed to clarify aspects of molecular biology, physiology and ecology of this bacterium. The aim of this study was to access the proteins differentially regulated in P. intermedia after exposure to molecular oxygen by using two-dimensional gel electrophoresis (2DE) associated with the approach of MALDI-TOF/TOF Tandem Mass Spectrometry. The identity of the protein was evaluated by database search for homologous genomic sequences of P. intermedia strain 17 (TIGR). Twenty five out of 72 proteins found were identified as up-regulated (17) or down-regulated (9). These proteins were related to a variety of metabolic process, some of which could be associated to antioxidant and redox regulatory roles. Our data indicate that OS may stimulate an adaptive response in P. intermedia whose effect on its biology may be evidenced by the increase in aerotolerance and changes in protein abundance in the oxygen adapted cells.

[Identification of bacterial contamination in liquid soap for hospital use]. / Identificação de contaminação bacteriana no sabão líquido de uso hospitalar.

This study performed a bacteriological analysis of the liquid soap in dispensers that health professionals use for hand washing. This exploratory, cross-sectional study was developed at the hospitalization units of a medium-sized hospital in Fortaleza, Ceará, Brazil. Data were collected between May and July 2007. Fifty-nine liquid soap dispensers were analyzed, of which 33 contained the following microorganisms: Burkholderia cepacia (14), Pseudomonas putidas (9), Pseudomonas aeruginosa (3), Klebsiella pneumoniae (3), Enterobacter clocae (2), and Pseudomonas luteola (2). The units with the largest number of contaminated samples were the surgical (n=7) and the dermatological clinics (n=4). Contamination was also found in an original flask of the same lot of liquid soap used to fill up the dispensers. In conclusion, there is a need to regulate and control the quality of these products in the production lines as well as during use in hospital services, mainly because they are used to prevent hospital infection.

Identificação de contaminação bacteriana no sabão líquido de uso hospitalar / Identification of bacterial contamination in liquid soap for hospital use / Identificación de contaminación bacteriana en el jabón líquido de uso hospitalario

O estudo realizou a análise bacteriológica de sabões líquidos utilizados para lavagem das mãos dos profissionais de saúde. Trata-se de estudo exploratório transversal, desenvolvido nas unidades de internação de hospital de médio porte em Fortaleza/CE. Os dados foram colhidos no período de maio a julho de 2007. Do total de 59 frascos com sabão líquido, 33 continham os seguintes microorganismos: Burkholderia cepacia (n=14), Pseudomonas putidas (9), Pseudomonas aeruginosa (3), Klebsiella pneumoniae (3), Enterobacter cloacae (2), Pseudomonas luteola (2). As unidades com maior número de amostras contaminadas foram a clínica cirúrgica (n=7) e a clínica dermatológica (n=4). A contaminação também foi verificada em frasco original do mesmo lote de sabão líquido usado para abastecer as saboneteiras. Podemos concluir ser necessário disciplinar e controlar a qualidade desses produtos nas linhas de produção tanto quanto nas fases de uso nos serviços de saúde, sobretudo porque sua utilidade se presta à prevenção de infecção hospitalar.

This study performed a bacteriological analysis of the liquid soap in dispensers that health professionals use for hand washing. This exploratory, cross-sectional study was developed at the hospitalization units of a medium-sized hospital in Fortaleza, Ceará, Brazil. Data were collected between May and July 2007. Fifty-nine liquid soap dispensers were analyzed, of which 33 contained the following microorganisms: Burkholderia cepacia (14), Pseudomonas putidas (9), Pseudomonas aeruginosa (3), Klebsiella pneumoniae (3), Enterobacter clocae (2), and Pseudomonas luteola (2). The units with the largest number of contaminated samples were the surgical (n=7) and the dermatological clinics (n=4). Contamination was also found in an original flask of the same lot of liquid soap used to fill up the dispensers. In conclusion, there is a need to regulate and control the quality of these products in the production lines as well as during use in hospital services, mainly because they are used to prevent hospital infection.

El estudio realizó el análisis bacteriológico de jabones líquidos utilizados para lavado de manos de los profesionales de salud. Se trata de un estudio exploratorio transversal, desarrollado en las unidades de internación de hospital mediano en Fortaleza, Ceará, Brasil. Los datos fueron recolectados en el período de mayo a julio de 2007. Del total de 59 frascos con jabón líquido, 33 contenían los siguientes microorganismos: Burkholderia cepacia (n=14), Pseudomonas putidas (9), Pseudomonas aeruginosa (3), Klebsiella pneumoniae (3), Enterobacter cloacae (2), Pseudomonas luteola (2). Las unidades con mayor número de muestras contaminadas fueron la de clínica quirúrgica (n=7) y la clínica dermatológica (n=4). Se verificó también contaminación en frasco original del mismo lote de jabón líquido usado para abastecer las jaboneras. Podemos concluir en que es necesario disciplinar y controlar la calidad de estos productos en las líneas de producción, tanto como en las fases de uso en los servicios de salud, sobre todo porque su utilidad apunta a la prevención de infecciones hospitalarias.

Urgência em atenção básica em saúde

Módulo da disciplina optativa "Rede de atenção: urgências" do Curso de Especialização Estratégia Saúde da Família (2014). Esta disciplina pretende propiciar o desenvolvimento do raciocínio e a aquisição de habilidades, visando melhorar a competência diante do atendimento a pacientes graves ou na eminência de um evento agudo em qualquer faixa etária, o que pode ocorrer em qualquer Unidade Básica de Saúde. O conteúdo da disciplina está distribuído em cinco seções: Seção 1: Fluxos na urgência - Seção 2: Atendimento inicial às urgências - Seção 3: Urgências clínicas - Seção 4: Primeiro atendimento ao trauma - Seção 5: Principais urgências neurológicas

Tétano: quando a imunoprevenção falha / Tetanus: when vaccine prevention fails

O tétano é doença adquirida do sistema nervoso central pela contaminação de feridaspelo bacilo Gram positivo Clostridium tetani, presente em fezes de animais, solo, poeirae objetos enferrujados. O tétano, apesar de passível de imunoprevenção, ainda persistenos países em desenvolvimento, devido à cobertura vacinal incompleta e ao tratamentoinadequado de lesões traumáticas. Este trabalho descreve a evolução de pacienteatendido no Hospital Risoleta Tolentino Neves, com manifestações clínicas de tétano,caso em que a adequada abordagem terapêutica garantiu a cura. Alerta para a persistênciado tétano como doença grave e para a importância da observação do esquemavacinal e da correta abordagem de feridas.

Tetanus is a central nervous system disease, acquired by contamination of wounds by Clostridium tetani, a Gram positive bacillus present in animal feces, soil, dust and rusty objects. Although vaccine-preventable, the disease persists in developing countries, due to incomplete vaccine-coverage and inadequate treatment of traumatic injuries. This paper describes a case of a patient treated at Hospital Risoleta Tolentino Neves, with typi-cal clinical manifestations of tetanus, in whom the institution of an appropriate treatment contributed effectively to his healing. This case report highlights the persistence of tetanus in Brazilian context and aims to draw attention to the importance of observation of the immunization schedule and the correct approach to wound treatment.

Diagnóstico diferencial da dor torácica: ênfase em causas não coronarianas / Diferential diagnosis of chest pain: enphasis on non coronary causes

Revisa-se a abordagem do paciente com dor torácica e discutem-se seus principais diagnósticos diferencias. Serão abordadas, especialmente, as dores de origem musculoesquelética, gastrointestinal, psicogênica e pulmonar, além das de origem cardíaca e isquêmica.

Reviews the current approach to the patient with chest pain complain, discussing the main diferential diagnosis. Although the studies show that most these pains are of noncardiac orgin, anciliary exams made have as their objectivies discard coronary diseases and other fatal patologies. Since the non ischemic causes are more prevalent in the medical practice we will discuss in this article the musculoskeletal, gastrointestinal orgin, psicogenic, pulmonary orgin pains, other than ischemic pain.

Infarto agudo do miocárdio relacionado ao uso de cocaína / Acute myocardial infarction related to cocaine use

Esta revisão discute o estado atual da fisiopatologia e do tratamento do infarto agudo do miocárdio relacionado ao uso de cocaína. O abuso de drogas ilícitas, em especial, da cocaína é cada vez mais frequente, com o aumento consequente da quantidade de consultas de emergências relacionadas a suas complicações, incluindo o infarto do miocárdio. Os principais mecanismos fisiopatológicos que contribuem de forma aguda ou crônica para causar o infarto relacionado ao uso de cocaína são: vasoespasmo, aterosclerose, trombogenese mediada por aumento dos níveis de fatores pró-trombóticos associada com a elevação da agregação plaquetária, aumento da demanda de oxigênio pelo miocárdio. O tratamento do infarto agudo do miocárdio relacionado ao uso de cocaína é semelhante ao do infarto na população em geral, com ácido acetilsalicílico, nitratos e oxigênio. As diferenças estão no uso de benzodiazepínicos e na contraindicação do uso de beta-bloqueadores. Existe controvérsia quanto ao uso do labetalol e da terapia trombolítica. Está sob investigação o uso de novos medicamentos como a fentolamina para reverter os efeitos de vasoconstrição e dos inibidores plaquetários para evitar a progressão do trombo.

This article aims to review current pillars of the pathophysiology and treatment of acute myocardial infarction related to cocaine use. Cocaine use has become increasingly frequent, and consequently the number of medical emergencies has increased related to its complications, including myocardial infarction. Four seems to be the pathophysiological mechanisms that contribute acutely or chronically, to cause infarction related to cocaine use: vasospasm, atherosclerosis, thrombus formation mediated by increased levels of prothrombotic factors and increased platelet aggregation, and increased demand for myocardial oxygen. The cocaine related infarction treatment is similar to infarction in general population with aspirine, nitrates and oxigen therapy. The differences are based on the use of benzodiazepines and the non indication of beta blockers, in the first case. Labetalol and trombolitic therapy use are controversial. The patophisiology knowledgement plays an important role in the introduction of new medications specific to cocaine related infarction, like phentolamine and platelets inhibitors.

Flutter atrial: implicações na abordagem da clínica de urgência / Atrial flutter: implications on the approach of clinical urgency

O flutter atrial é uma arritmia cardíaca do grupo das taquiarritmias supraventriculares (TSV), com prevalência estimada de 85:100.000 habitantes e surge, frequentemente, nos atendimentos de urgência clínica. Pode se manifestar por frequências atriais de 220 a 360 bpm, com episódios durando de segundos a horas. Sua apresentação clínica varia de forma oligossintomática até lipotímia, principalmente quando a frequência ventricular é alta, com risco de lesão miocárdica. Associa-se, em geral, a doenças cardíacas prévias ou a condições sistêmicas como a tireotoxicose. Ocorre de forma aroxística ou crônica, revestindo-se, algumas vezes, de grande dificuldade no diagnóstico diferencial com outras TSV. O controle do flutter atrial utiliza métodos de controle da frequência cardíaca e de cardioversões farmacológica e não farmacológica, cuja escolha baseia-se, principalmente, nas condições clínicas do paciente. Este artigo objetiva estabelecer os critérios atuais para a abordagem do flutter atrial e sua diferenciação com outras TSV.

Atrial flutter is a cardiac arrhythmia which is part of the Supraventricular Tachyarrhythmia (STs) group the estimated prevalence of 85 cases per 100,000 people, and appears frequently in the urgent care clinic. The arrhythmia can manifest atrial frequencies from 220 to 360 bpm with episodes that may last from seconds to hours. Furthermore, its clinical presentation varies from oligossymptomatic forms to presyncopes, mainly with high ventricular response, when there is significant risk of myocardial damage. It is in general associated to previous cardiac or systemic conditions (e.g. thyrotoxicosis). It occurs either in paroxysmal or chronicle forms, sometimes with great difficulty for differential diagnosis with other STs. The atrial flutter control uses methods of heart rate control and pharmacological or non-pharmacological cardio version, whose choice is based primarily on the patient’s clinical conditions. This article aims to gathering information that would provide the current criteria for the approach of atrial flutter regarding its accurate diagnosis and its differentiation from other STs.

Abordagem do Flutter atrial na urgência: relato de caso / Approach of atrial flutter in the emergency: case report

O flutter atrial é uma arritmia que ocorre predominantemente em portadores de cardiopatia. Este artigo relata o caso de paciente portador de cardiopatia reumática com duas trocas de valvas (aórtica e mitral), a última delas ocorrida há 10 anos, com palpitações e congestão sistêmica. A suspeição inicial foi de taquicardia paroxística supraventricular (TPSV), tendo sido tentada a cardioversão com adenosina, sem sustentação. O eletrocardiograma (ECG) foi revisto, e o diagnóstico estabelecido foi de flutter atrial. A cardioversão elétrica foi realizada nove dias após sua admissão, tendo sido obtida a sustentação do ritmo sinusal.

Atrial flutter is an arrhythmia that occurs predominantly in patients with previous heart disease. This article reports the case of a patient with rheumatic heart disease and with two exchanged valves, the aortic and mitral, and the last exchange procedure took place ten years ago, with the placement of metallic prostheses. The first diagnosis was paroxysmal supraventricular tachycardia (PSVT) and it was attempted cardioversion with adenosine, without success. The electrocardiogram (ECG) was revised and atrial flutter was diagnosed. Electrical cardioversion was performed after 9 days in hospital, and the rhythm was sustained.

Métodos convencionais e moleculares para o diagnóstico da tuberculose pulmonar: um estudo comparativo / Conventional and molecular techniques in the diagnosis of pulmonary tuberculosis: a comparative study

OBJETIVO: Comparar quatro métodos laboratoriais no diagnóstico de tuberculose pulmonar. MÉTODOS: Foram realizadas pesquisa direta pelas colorações de Ziehl-Neelsen e auramina, cultura para micobactérias em meio Lõwenstein-Jensen (LJ) e polymerase chain reaction (PCR, reação em cadeia da polimerase) para Mycobacterium tuberculosis em 160 amostras de secreção respiratória de pacientes com suspeita de tuberculose pulmonar. As cepas isoladas foram identificadas por método radiométrico utilizando-se p-nitro-alfa-acetilamino-beta-hidroxipropiofenona (NAP) e métodos clássicos. A sensibilidade dos métodos foi comparada com o padrão ouro para o diagnóstico da tuberculose pulmonar, definido por critérios clínicos, radiológicos e microbiológicos. RESULTADOS: Dos 160 pacientes, 142 foram diagnosticados com tuberculose pulmonar de acordo com o padrão ouro. As técnicas de Ziehl-Neelsen e auramina, cultura em meio LJ e PCR apresentaram sensibilidade de 54,2 por cento, 58,4 por cento, 67,6 por cento e 77,5 por cento, respectivamente, quando comparados ao critério diagnóstico adotado. A especificidade dos quatro métodos foi de 100 por cento. A concordância na identificação da micobactéria entre PCR e o método radiométrico utilizando NAP foi alta (96,8 por cento). A sensibilidade da PCR foi de 50,8 por cento nas amostras com baciloscopia negativa e de 98,8 por cento naquelas com baciloscopia positiva. Nas amostras com resultados negativos na baciloscopia e cultura, a sensibilidade da PCR foi menor que nas com resultados positivos (25,6 por cento e 99,0 por cento, respectivamente). CONCLUSÕES: A PCR é método promissor no diagnóstico da tuberculose pulmonar, mesmo em amostras paucibacilares. Além disso, apresenta a vantagem da identificação simultânea e rapidez do resultado.

OBJECTIVE: To compare four laboratory methods in the diagnosis of pulmonary tuberculosis. METHODS: Respiratory secretion specimens were collected from 160 patients suspected of having pulmonary tuberculosis. Direct testing for Mycobacterium tuberculosis was carried out using Ziehl-Neelsen and auramine staining. In addition, culture in Lõwenstein-Jensen (LJ) medium and polymerase chain reaction (PCR) were used. The strains isolated were identified by means of a radiometric method using p-nitro-alpha-acetylamino-beta-hydroxypropiophenone (NAP) and classical methods. The sensitivity of the methods was compared to the gold standard for the diagnosis of pulmonary tuberculosis, based on clinical, radiological and microbiological criteria. RESULTS: Of the 160 patients, 142 were diagnosed with pulmonary tuberculosis according to the gold standard. The sensitivity of Ziehl-Neelsen staining, auramine staining, culture in LJ medium and PCR was 54.2 percent, 58.4 percent, 67.6 percent and 77.5 percent, respectively, when compared with the diagnostic criterion adopted. All four methods presented 100 percent specificity. In the identification of mycobacteria, there was high (96.8 percent) concordance between PCR and the radiometric method using NAP. The sensitivity of PCR was 50.8 percent in samples with negative sputum smear microscopy results and 98.8 percent in those with positive results. The sensitivity of PCR was lower in specimens with negative results in sputum smear microscopy and culture than in those with positive results (25.6 percent and 99.0 percent, respectively). CONCLUSIONS: We found PCR to be a promising method for the diagnosis of pulmonary tuberculosis, even in paucibacillary specimens. Simultaneous identification and faster results are additional advantages of this method.

Atendimento à parada cardiorrespiratória: suporte progressivo à vida / Emergency medical services to cardiorespiratory arrest: progressive support to life

Todos os profissionais de saúde devem ser capacitados para a execução das manobras de suporte básico de vida. Ressuscitação cardiorrespiratória efetiva diminui a morbidade e mortalidade nos casos de parada cardiorrespiratória. Na faixa etária pediátrica, raramente a parada é um evento súbito. Tipicamente, crianças apresentam parada secundária a período prolongado de dificuldade respiratória ou circulatória. Muitos pesquisadores demonstram que as taxas de sobrevida são maiores quando após parada respiratória do que quando existe parada cardíaca. Por outro lado, muitos adultos apresentam com o causa primária fibrilação ventricular. O tratamento da fibrilação ventricular requer imediata ressuscitação cardiorrespiratória com desfibrilação. Em todas as idades o reconhecimento precoce e a imediata intervenção são as chaves para o bom prognóstico. Este artigo contém as principais mudanças para o profissional de saúde para atendimento ao suporte básico e avançado de vida e enfatiza a importância do cuidado para a sobrevivência nas paradas cardíacas ocorridas fora do ambiente hospitalar.