Anticoagulación precoz con warfarina en pacientes sometidos a sustitución valvular aórtica por bioprótesis: ensayo prospectivo randomizado: análisis interino / Early anticoagulation with warfarin in patients undergoing bioprosthetic aortic valve replacement: randomized prospective trial: interim analysis / Anticoagulação precoce com varfarina em pacientes submetidos à troca valvar aórtica por bioprótese: ensaio prospectivo randomizado: análise provisória

Introducción: aunque las bioprótesis son menos trombogénicas que las válvulas mecánicas; la trombosis de estas es una entidad cada vez más reconocida como causa de disfunción protésica potencialmente reversible. No está definido el beneficio de la anticoagulación rutinaria versus antiagregación plaquetaria luego de la sustitución valvular aórtica (SVA) por bioprótesis. La anticoagulación precoz podría asociarse a menores gradientes transprotésicos con similar riesgo de complicaciones. Objetivos: el objetivo primario es determinar si existe una diferencia significativa en la variación del gradiente transprotésico medio al año de la SVA entre las dos estrategias de tratamiento antitrombótico. Los objetivos secundarios son la comparación de la variación del gradiente máximo y del área valvular aórtica, y parámetros clínicos que incluyen la Clase Funcional de la New York Heart Association, las tasas de sangrado mayor y menor y la incidencia de eventos embólicos. Este trabajo representa el análisis interino a 3 meses de un proyecto a más largo plazo, y se propone mostrar los resultados preliminares de los puntos finales previamente definidos. Métodos: se presenta el análisis interino de un ensayo randomizado multicéntrico. Todos los pacientes sometidos a SVA por bioprótesis porcinas fueron sucesivamente reclutados en dos centros de cirugía cardíaca desde el 01/01/2019 hasta el 01/09/2019. El grupo anticoagulación recibió warfarina durante los primeros 3 meses y ambos recibieron aspirina a largo plazo. Se realizaron instancias de seguimiento clínicas y ecocardiográficas antes del alta, a los 3 meses y al año. Resultados: se reclutaron 107 pacientes; 46% de ellos fueron randomizados al grupo anticoagulación y 54% al grupo control. No existieron diferencias en las características basales. Tampoco existieron diferencias significativas entre ambos grupos en la variación entre el alta y los 3 meses del área valvular protésica, coeficiente de obstrucción, gradiente máximo ni gradiente medio ni en la clase funcional. En cuanto a las complicaciones, no existieron eventos embólicos y los sangrados no difirieron significativamente entre ambos grupos. Conclusiones: la anticoagulación no modificó la variación de los gradientes transprotésicos a los 3 meses. Asimismo, no produjo mayor incidencia de efectos adversos. Todavía no está dilucidado si la anticoagulación precoz con warfarina luego de la SVA tiene impacto en los resultados a largo plazo.

Introduction: although bioprostheses are less thrombogenic than mechanical valves, bioprosthesis valve thrombosis is an increasingly recognized entity that can cause potentially reversible prosthetic valve dysfunction. There is a lack of consensus whether to use anticoagulation after aortic valve replacement (AVR) or antiplatelet therapy. Our hypothesis is that early anticoagulation is associated with lower transprosthetic gradients with similar risk of complications. Objective: primary objective is to determine if there is a significant difference in the variation of the mean transprosthetic gradient (ΔGm) one year after SVA between the two antithrombotic treatment strategies. Secondary objectives are the comparison of the variation of maximum gradient and aortic valve area, and clinical parameters including NYHA functional class, major and minor bleeding rates, and the incidence of embolic events. This work represents the 3-month interim analysis of a longer-term project, and is intended to show the preliminary results of the previously defined end points. Methods: this is an interim analysis of a multicenter randomized trial. All patients who underwent AVR by porcine bioprostheses were successively recruited in two cardiac surgery centers in Montevideo between 01/01/2019 and 01/09/2019. The anticoagulation group received warfarin for 3 months. Both groups received aspirin. Clinical and echocardiographic follow-up consultations were performed before discharge, at 3 months, and at 1 year. Results: 107 patients were recruited, 46% were randomized to the anticoagulation group and 54% to the control group. There were no differences in baseline characteristics. There were no significant differences between the two groups in the variation between discharge and 3 months of effective orifice area, doppler velocity index, peak gradient and mean gradient. There were also no differences between both groups in functional class. Regarding complications, there were no embolic events and bleeding did not differ significantly. Conclusions: in this study, anticoagulation did not modify the variation of transprosthetic gradients at 3 months. Likewise, it did not produce a higher incidence of adverse effects. It remains unclear whether early anticoagulation with warfarin after AVR has an impact on long-term outcomes.

Introdução: embora as biopróteses sejam menos trombogênicas que as mecânicas, a trombose de biopróteses é uma entidade cada vez mais reconhecida como causa de disfunção protética potencialmente reversível. A anticoagulação de rotina após a substituição da valva aórtica por bioprótese (SVA) não está definida. Nossa hipótese é que a anticoagulação precoce está associada a menores gradientes transprotéticos com risco semelhante de complicações. Objetivo: o objetivo principal é determinar se há uma diferença significativa na variação do gradiente transprotético médio (ΔGm) um ano após SVA entre as duas estratégias de tratamento antitrombótico. Os objetivos secundários são a comparação da variação do gradiente máximo e da área valvar aórtica e parâmetros clínicos, incluindo NYHA CF, taxas de sangramento maior e menor e incidência de eventos embólicos. Este trabalho representa a análise intercalar de 3 meses de um projeto de longo prazo, e pretende mostrar os resultados preliminares dos pontos finais previamente definidos. Métodos: apresenta-se a análise interina de um estudo multicêntrico randomizado. Todos os pacientes submetidos a SVA por biopróteses suínas foram sucessivamente recrutados em dois centros de cirurgia cardíaca em Montevidéu, durante um período de recrutamento de 1/1/2019 a 1/9/2019. O grupo de anticoagulação recebeu warfarina por 3 meses. Ambos os grupos receberam aspirina. Foram realizadas consultas médicas clínicas e ecocardiográficas antes da alta, aos 3 meses e ao 1 ano. Resultados: foram recrutados 107 pacientes, 46% foram randomizados para o grupo anticoagulação e 54% para o grupo controle. Não houve diferenças nas características basais. Não houve diferenças significativas entre os dois grupos da variação entre alta e 3 meses na área valvar, coeficiente de obstrução, gradiente máximo ou gradiente médio. Também não houve diferenças entre os dois grupos na classe funcional. Em relação às complicações, não houve eventos embólicos e sangramentos não diferiram significativamente. Conclusões: neste estudo, a anticoagulação não modificou a variação dos gradientes transprotéticos aos 3 meses. Da mesma forma, não produziu maior incidência de efeitos adversos. Ainda não está claro se a anticoagulação precoce com varfarina após SVA tem impacto nos resultados a longo prazo.

Comparing follow-up of patients with vitamin K antagonists in a health center: pre- and post-COVID-19 pandemic / Comparação do seguimento de doentes hipocoagulados com antagonistas da vitamina K numa unidade de saúde: pré e pós pandemia COVID-19

Introduction and objectives: During the COVID-19 pandemic, the follow-up of patients treated with vitamin K antagonists (VKAs) may have been affected. This study aims to compare how these patients were monitored pre- and post-COVID-19 pandemic and understand the impact of non-face-to-face appointments on their follow-up. Methods: We conducted a retrospective cohort study in a Portuguese Health Center. The study included patients treated with VKAs and followed at the Health Center for international normalized ratio (INR) monitoring between March 2019 and March 2021. Data collected: sex, age, type of VKA; INR; date of INR assessment, type of appointment (face-to-face or phone/e-mail). Rosendaal's method was used to calculate pre-COVID-19 and post-COVID-19 time in therapeutic range (TTR). Good TTR control was defined if values ≥ 70%. Results: 44 patients were included. The mean TTR in the pre-COVID-19 period was 64.55% (95% CI: 58.10 - 71.00%). The post-COVID-19 mean was slightly higher (+ 2.26%), 66.81% (95% CI: 59.66 - 73.97%), but the difference was not statistically significant (p = 0.576). The use of non-face-to-face appointments did not contribute to worsening post-pandemic TTR, show-ing no lower follow-up than during pre-pandemic period in which all contacts were face-to-face [CI (95%) -0.397 - 0.196 for a reference range -0.489 - 0.693]. Conclusions: The TTR value in both periods was similar and lower than the value defined for effective hypocoagulation. The use of non-face-to-face consultation in the post-COVID-19 period does not seem to have influenced the quality of hypocoagulation (AU).

Introdução e objetivos: Durante a pandemia COVID-19 o acompanhamento de doentes medicados com antagonistas da vitamina K (AVKs) pode ter sido afetado. Este estudo pretende comparar a forma como estes doentes foram monitorizados antes e depois da pandemia COVID-19 e compreender o impacto da consulta não presencial no seu seguimento. Métodos: Estudo de coorte retrospetivo num Centro de Saúde em Portugal. O estudo incluiu doentes tratados com AVKs e seguidos no Centro de Saúde para monitorização do International Normalized Ratio(INR) entre março de 2019 e março de 2021. Dados recolhidos: sexo, idade, tipo de AVK; INR; data da avaliação do INR, tipo de consulta (presencial ou por telefone/e-mail). Foi utilizado o método de interpolação linear de Rosendaal para calcular o tempo em intervalo terapêutico (TTR) pré- e pós-COVID-19. Foi definido um bom controle se valores de TTR ≥ 70%. Resultados: Foram incluídos 44 doentes. A média de TTR no período pré-COVID-19 foi de 64,55% (95% IC: 58,10 - 71,00%). A média pós-COVID-19 foi ligeiramente superior (+ 2,26%), 66,81% (95% IC: 59,66 - 73,97%), mas a diferença não foi estatisticamente significativa (p = 0,576). A utilização da consulta não presencial não contribuiu para o agravamento do TTR no período pós-pandemia, não mostrando um seguimento inferior ao do período pré-pandemia em que todos os contatos foram presenciais [IC (95%) -0,397 - 0,196 para um intervalo de referência -0,489 - 0,693]. Conclusões: O valor de TTR em ambos os períodos foi semelhante e inferior ao valor definido para hipocoagulação eficaz. A utilização da consulta não presencial no período pós-COVID-19 não parece ter influenciado a qualidade da hipocoagulação (AU).

Short-term outcome of patients after transcatheter aortic valve replacement receiving different anticoagulants / 中华心血管病杂志

Objective: To compare the safety and efficacy of different anticoagulants in patients with indications for anticoagulation after transcatheter aortic valve replacement (TAVR). Methods: This is a retrospective study. Patients who underwent TAVR from April 2016 to February 2022 in Guangdong Provincial People's Hospital and had indications for anticoagulation were included and divided into two groups according to the type of anticoagulants, i.e. non-vitamin K antagonist oral anticoagulant (NOAC) and warfarin, and patients were followed up for 30 days. The primary endpoint was the combination of death, stroke, myocardial infarction, valve thrombosis, intracardiac thrombosis and major bleeding. The incidence of endpoints was compared between two groups, and multivariate logistic regression analysis was applied to adjust the bias of potential confounders. Results: A total of 80 patients were included. Mean age was (74.4±7.1) years, 43 (53.8%) were male. Forty-nine (61.3%) patients used NOAC, 31 used warfarin, and major indication for anticoagulants was atrial fibrillation (76/80, 95.0%). The adjusted risks of the primary endpoint (OR=0.23, 95%CI 0.06-0.94, P=0.040) of NOAC were lower than that of warfarin, mainly driven by a lower risk of major bleeding (OR=0.19, 95%CI 0.04-0.92, P=0.039). Conclusions: The short-term outcome of NOAC is better than that of warfarin in patients with indications for anticoagulation after TAVR. Randomized controlled trials of large sample size with long-term follow-up are needed to further testify this finding.

Short-term outcome of patients after transcatheter aortic valve replacement receiving different anticoagulants / 中华心血管病杂志

Objective: To compare the safety and efficacy of different anticoagulants in patients with indications for anticoagulation after transcatheter aortic valve replacement (TAVR). Methods: This is a retrospective study. Patients who underwent TAVR from April 2016 to February 2022 in Guangdong Provincial People's Hospital and had indications for anticoagulation were included and divided into two groups according to the type of anticoagulants, i.e. non-vitamin K antagonist oral anticoagulant (NOAC) and warfarin, and patients were followed up for 30 days. The primary endpoint was the combination of death, stroke, myocardial infarction, valve thrombosis, intracardiac thrombosis and major bleeding. The incidence of endpoints was compared between two groups, and multivariate logistic regression analysis was applied to adjust the bias of potential confounders. Results: A total of 80 patients were included. Mean age was (74.4±7.1) years, 43 (53.8%) were male. Forty-nine (61.3%) patients used NOAC, 31 used warfarin, and major indication for anticoagulants was atrial fibrillation (76/80, 95.0%). The adjusted risks of the primary endpoint (OR=0.23, 95%CI 0.06-0.94, P=0.040) of NOAC were lower than that of warfarin, mainly driven by a lower risk of major bleeding (OR=0.19, 95%CI 0.04-0.92, P=0.039). Conclusions: The short-term outcome of NOAC is better than that of warfarin in patients with indications for anticoagulation after TAVR. Randomized controlled trials of large sample size with long-term follow-up are needed to further testify this finding.

Superior ophthalmic vein and cavernous sinus thrombosis associated with COVID-19: a case report / Trombose de veia oftálmica superior e seio cavernoso associada à COVID-19: relato de caso

ABSTRACT Cavernous sinus and superior ophthalmic vein thrombosis is a rare clinical condition, and little described in the literature. The clinical presentation is nonspecific and highly variable, and symptoms may include red eye, ophthalmoplegia, coma, and death. The main etiology results from infection of the paranasal sinuses. The final diagnosis must be made through imaging tests such as magnetic resonance imaging. We describe a case of cavernous sinus and superior ophthalmic vein thrombosis after COVID-19 infection in a 64-year-old patient with persistent ocular hyperemia and pain on eye movement. Ophthalmological examination showed preserved visual acuity, conjunctival hyperemia, dilation of episcleral vessels and retinal vascular tortuosity in the right eye. Magnetic resonance imaging confirmed the diagnosis. The association with the COVID-19 was raised, excluding other infectious causes. Enoxaparin and Warfarin were started with significant improvement in the ocular clinical presentation and maintenance of initial visual acuity after 12 months of follow-up.

RESUMO A trombose de seio cavernoso e veia oftálmica superior é uma condição clínica rara e pouco descrita na literatura. A apresentação clínica é inespecífica e altamente variável. Os sintomas podem incluir olho vermelho, oftalmoplegia, coma e morte. A etiologia principal resulta da infecção dos seios paranasais. O diagnóstico final deve ser efetuado por meio de exames de imagem, como ressonância magnética. Descrevemos um caso de trombose de seio cavernoso e veia oftálmica superior após COVID-19 em paciente de 64 anos e com quadro de hiperemia ocular persistente e dor à movimentação ocular. Ao exame oftalmológico, observou-se acuidade visual preservada, hiperemia conjuntival, dilatação de vasos episclerais e tortuosidade vascular retiniana em olho direito. A ressonância confirmou o diagnóstico. A associação com a COVID-19 foi levantada, excluindo-se demais causas infecciosas. Prescrevemos enoxaparina e varfarina, com melhora do quadro clínico ocular e manutenção da acuidade visual inicial após 12 meses de acompanhamento.

Perfil dos pacientes em uso de anticoagulantes orais diretos atendidos via judicial em um município de médio porte do estado de Minas Gerais / Profile of patients in the use of direct oral anticoagulants assisted judicially in a medium-sized municipality of the state of Minas Gerais

Fundamentos: O sistema de saúde brasileiro é embasado nos princípios estabelecidos na Constituição Federal, que in-cluem igualdade, universalidade, equidade e participação popular, em um modelo de saúde totalmente gratuito. O Brasil vive um grande desafio para ofertar assistência de qualidade para toda população. Muitas vezes, é necessário solicitar à justiça um suporte para conseguir acesso à saúde pública. Entre os processos judiciais envolvendo questões de saúde, a maioria são referentes ao fornecimento de medicamentos. Dentre os medicamentos solicitados, destacam-se os anticoagulantes orais diretos (DOACs), cujos estudos apontam que apresentam melhor segurança e eficácia similar em relação à varfarina, medicamento padronizado no SUS para o tratamento do tromboembolismo venoso e fibrilação atrial. Objetivo: Avaliar o perfil dos pacientes e das solicitações dos DOACs atendidos por via judicial. Métodos: Estudo documental descritivo realizado em Divinópolis/MG a partir de todos os processos julgados com parecer favorável pela justiça referentes à solicitação dos DOACs. A coleta de dados foi realizada em três fontes secundárias: os pro-cessos judiciários, prontuários dos pacientes nas unidades básicas de saúde e no Sistema de Informações em Saúde. Resultados: Foram incluídos no estudo um total de 74 processos referentes à solicitação dos DOACs no município de Divinópolis-MG. Observou-se que 74,3% dos indivíduos eram do sexo feminino, com média de idade de 70 anos. O diagnóstico mais observado foi a fibrilação atrial (36,5%). Cerca de 52,7% dos médicos registraram que houve tenta-tiva terapêutica com varfarina antes da introdução dos DOACs e a comodidade (24,3%) foi a justificativa mais utilizada por optar pelos DOACs seguida por dificuldade em controlar a RNI (20,3%). Outro dado encontrado foi que 25,7% dos pacientes nunca obtiveram na farmácia do SUS o medicamento solicitado por via judicial. Conclusão: Concluímos que a demanda judicial que afoga tanto o sistema judiciário como o sistema de saúde, poderia ser evitada se fossem seguidas as recomendações da Comissão Nacional de Incorporação de Tecnologias no Sistema Único de Saúde para estabelecer a distribuição dos insumos de saúde. Além disso, nos processos judiciais faltam informações importantes para auxiliar o juiz a emitir um parecer, sendo baseadas, na maioria das vezes, em apenas uma opinião médica. (AU)

Fundamentals: The Brazilian health system is based on the principles established in the Federal Constitution, which include equality, universality, equity, and popular participation in a completely free health model. Brazil is under great challenge to offer quality care to the entire population. It is often necessary to ask the court for support to gain access to public health.Among the court proceedings involving health issues, the majority refer to the supply of medicines. Among the drugs requested, direct oral anticoagulants (DOACs) stand out, which indicate that they have better safety and similar efficacy concerning warfarin, a standardized medication in the SUS to treat venous thromboembolism (VTE) and atrial fibrillation (AF). Objective: Assess the profile of patients and requests for direct oral anticoagulants (DOACs) served by the court. Methods: Descriptive documental study carried out in Divinópolis/MG from all cases judged with a favorable opinion by the court regarding the request of DOACs. Data collection was carried out from three secondary sources: court proceedings, medical records of patients in basic health units, and the Health Information System (SIS). Results:A total of 74 lawsuits referring to the DOACs request in the city of Divinópolis-MG were included in the study. It was observed that 74.3% of the individuals were female, with a mean age of 70 years. The most common diagnosis was atrial fibrillation (36.5%). About 52.7% of physicians reported that there was a therapeutic attempt with warfarin before the introduction of DOACs, and convenience (24.3%) was the most used justification for choosing DOACs, followed by difficulty in controlling the INR (20.3%). Another finding was that 25.7% of the patients never obtained the medication requested through the courts at the SUS pharmacy. Conclusion: We concluded that the judicial demand that drowns both the judicial system and the health system could be avoided if the recommendations of the National Commission for the Incorporation of Technologies in the Unified Health System were followed to establish the distribution of health education. In addition, in court proceedings, important information is lacking to assist the judge in issuing an opinion and is most often based on only one medical opinion. (AU)

Manejo del paciente anticoagulado en una cirugía dental / Management of the anticoagulated patient in dental surgery / Gerenciamento do paciente anticoagulado em cirurgia odontológica

Introducción: una adecuada hemostasia es crucial para el éxito del tratamiento odontológico invasivo, ya que los problemas de sangrado pueden dar lugar a complicaciones asociadas a una importante morbimortalidad. El tratamiento odontológico de pacientes que tienden a un mayor riesgo de sangrado debido al uso de fármacos anticoagulantes plantea un desafío en la práctica diaria de los profesionales de la odontología. El conocimiento adecuado de los mecanismos subyacentes a la hemostasia y el manejo optimizado de estos pacientes son, por lo tanto, cuestiones muy importantes. Se realiza un estudio de los fármacos anticoagulantes actualmente disponibles en el mercado, evaluando los riesgos y beneficios de suspender dicho fármaco previo a un tratamiento odontológico invasivo. Además, se hace una revisión de los protocolos de manejo actuales que se utilizan en estos pacientes. Material y métodos: se realizó una búsqueda bibliográfica en las bases de datos Epistemonikos y Medline/PubMed; en el portal Timbó y en la biblioteca virtual Scielo. Abarcando todos los estudios publicados en los últimos 15 años en inglés y español. Se encontraron 30 artículos, se seleccionaron 15 en primera instancia para finalizar con 11 artículos. En dicha selección el filtro fue que los demás artículos se referían a otros anticoagulantes que no eran parte de este trabajo. Resultados: se han desarrollado múltiples protocolos de manejo, aunque en todos los casos se requiere una historia clínica completa, junto con pruebas hemostáticas complementarias para minimizar los riesgos derivados del tratamiento odontológico. Discusión: muchos autores consideran que la medicación de los pacientes indicada para el tratamiento de una enfermedad de base no debe ser alterada o suspendida a menos que así lo indique el médico prescriptor. Se ha demostrado que las medidas hemostáticas locales son suficientes para controlar los posibles problemas de sangrado derivados del tratamiento dental.

Introduction: Adequate hemostasis is crucial for the success of invasive dental treatment, since bleeding problems can lead to complications associated with significant morbidity and mortality. The dental treatment of patients who are prone to an increased risk of bleeding due to the use of anticoagulant drugs poses a challenge in the daily practice of dental professionals. Adequate knowledge of the mechanisms underlying hemostasis and optimized management of these patients are therefore very important issues. A review is made of the anticoagulant drugs currently available on the market, evaluating the risks and benefits of suspending such a drug prior to invasive dental treatment. In addition, a review is made of the current management protocols used in these patients. Material and methods: A bibliographic search was carried out in the Epistemonikos and Medline/PubMed databases; in the Timbo portal and in the Scielo virtual library. All the studies published in the last 15 years in English and Spanish were included. Thirty articles were found, 15 were selected in the first instance to end up with 11 articles. In this selection, the filter was that the other articles referred to other anticoagulants that were not part of this work. Results: multiple management protocols have been developed, although in all cases a complete clinical history is required, together with complementary hemostatic tests to minimize the risks derived from dental treatment. Discussion: many authors consider that the patient's medication indicated for the treatment of an underlying disease should not be altered or suspended unless so indicated by the prescribing physician. It has been shown that local hemostatic measures are sufficient to control possible bleeding problems derived from dental treatment.

Introdução: A hemostasia adequada é crucial para o sucesso do tratamento dentário invasivo, pois problemas de sangramento podem levar a complicações associadas a uma morbidade e mortalidade significativas. O tratamento odontológico de pacientes que são propensos a um risco maior de sangramento devido ao uso de drogas anticoagulantes representa um desafio na prática diária dos profissionais da odontologia. O conhecimento adequado dos mecanismos subjacentes à hemostasia e o gerenciamento otimizado desses pacientes são, portanto, questões muito importantes. É realizada uma revisão dos anticoagulantes atualmente disponíveis no mercado, avaliando os riscos e benefícios de descontinuar tal medicamento antes do tratamento dentário invasivo. Além disso, é feita uma revisão dos protocolos de gerenciamento atuais usados nesses pacientes. Material e métodos: Foi realizada uma pesquisa bibliográfica nas bases de dados Epistemonikos e Medline/PubMed; no portal Timbo e na biblioteca virtual Scielo. Todos os estudos publicados nos últimos 15 anos, em inglês e espanhol, foram incluídos. Trinta artigos foram encontrados, 15 foram selecionados em primeira instância para acabar com 11 artigos. Nesta seleção, o filtro foi que os outros artigos se referiam a outros anticoagulantes que não faziam parte deste trabalho. Resultados: foram desenvolvidos múltiplos protocolos de gerenciamento, embora em todos os casos seja necessário um histórico clínico completo, juntamente com testes hemostáticos complementares para minimizar os riscos derivados do tratamento odontológico. Discussão: muitos autores consideram que a medicação os pacientes indicada para o tratamento de uma doença subjacente não deve ser alterada ou descontinuada, a menos que o médico que a prescreve dê instruções nesse sentido. Medidas hemostáticas locais demonstraram ser suficientes para controlar potenciais problemas de sangramento resultantes do tratamento odontológico.

Relación entre la presión arterial y el control de la hemorragia post-exodoncia en pacientes bajo tratamiento con warfarina / Relationship between blood pressure and hemorrhage control post exodontia in patients under warfarin treatment

Objetivo: Determinar la relación entre el nivel de pre- sión arterial (PA) y la hemorragia post-exodoncia aplicando medidas de hemostasia local en pacientes bajo tratamiento con warfarina. Materiales y métodos: Este estudio se realizó sobre 30 pacientes (15 hombres y 15 mujeres) bajo tratamiento anti- coagulante oral (TACO) con warfarina. Los pacientes concu- rrían al programa de TACO del Hospital y Centro de Referen- cia de Salud El Pino (HEP y CRS). Se les realizaron una o dos extracciones dentales (n=38) sin suspensión del anticoagulan- te oral a pacientes que tuvieran un coeficiente internacional normalizado (INR) del día menor o igual a 3. Se aplicaron medidas de hemostasia local con gasa compresiva y/o sutura en 30 de las extracciones dentales. Los procedimientos quirúr- gicos fueron llevados a cabo en el Servicio Dental del CRS y HEP. Se registraron las siguientes variables: 1) PA previa a la exodoncia, 2) PA a los 30 minutos, 3) Presencia o ausencia de hemorragia a los 30 minutos post-exodoncia y 4) PA y presen- cia o ausencia de hemorragia a las 24 horas post-exodoncia. Se estudió la relación entre el nivel de PA y la hemorragia post-exodoncia. Resultados: De todos los pacientes evaluados, ninguno presentó hemorragia post-exodoncia en los distintos momen- tos de evaluación, independientemente de cuál fuera su PA. No se encontraron efectos de la variable PA ­considerando valores de PA sistólica (PAS) por debajo de 140 mmHg y de PA diastólica (PAD) menores a 90 mmHg- en relación con la hemorragia post-exodoncia. Conclusión: De acuerdo con los resultados obtenidos en este estudio, la presión arterial con PAS <140 mmHg y PAD <90 mmHg no es un factor que influya en el sangrado post-exodoncia en pacientes bajo tratamiento con warfarina con ≤3 (AU)

Aim: To establish the relationship between blood pres- sure (BP) level and post-exodontic hemorrhage by applying local hemostasis measures in patients under warfarin treat- ment. Materials and methods: This study was conducted in 30 patients (15 men and 15 women) under oral anticoagu- lant (OAC) treatment with warfarin. The patients attended the TACO program of the "Hospital y Centro de Referencia de Salud el Pino (HEP y CRS)". One or two dental extractions (n=38) were performed in the patients that had an INR low- er or equal to 3, without suspending the oral anticoagulant treatment, applying local hemostasis measures with compres- sive gauze and/or suture in 30 of the extractions. The surgical procedure was carried out in the Dental Department of the CRS and HEP. The following variables were registered: 1) BP prior to extraction, 2) BP after 30 minutes, 3) presence or absence of hemorrhage after 30 minutes post-exodontia and 4) BP and presence or absence of hemorrhage 24 hours post-exodontia. The relation between BP level and post-exo- dontic bleeding was studied. Results: Considering all the examined patients, none of them presented post-exodontic hemorrhage at any of the dif- ferent moments of evaluation, regardless of their BP level. No effect of the BP variable ­considering a range of systolic BP SBP) below 140 mmHg and a diastolic BP (DBP) under 90 mmHg- was found in relation to post-exodontic hemorrhage. Conclusion: According to the results obtained in this study, blood pressure with SBP <140 mmHg and DBP <90 mmHg is not an influential factor in post-exodontic bleeding in patients under warfarin treatment with ≤3 (AU)

Como realizar o manejo do paciente anticoagulado com Varfarina no pré, trans e pós-operatório / How to manage the anticoagulated patient with Warfarin in the pre, trans and postoperative period

A Varfarina é um anticoagulante da classe dos antagonistas da vitamina K que atua prevenindo a formação e a expansão do coágulo sanguíneo. É indicada para indivíduos com risco de trombose, pacientes pós-acidentes vasculares isquêmicos e portadores de trombofilias, dentre outros. O manejo do paciente anticoagulado pode gerar dúvidas, devido ao risco de complicações hemorrágicas ou da ocorrência de eventos tromboembólicos. Este trabalho visa orientar, de forma direta, o acadêmico e profissional de odontologia, diante de pacientes em uso de Varfarina.

Warfarin is an anticoagulant in the class of vitamin K antagonists that works by preventing the formation and expansion of the blood clot. It is indicated for individuals at risk of thrombosis, ischemic post-stroke patients and patients with thrombophilia, among others. The management of anticoagulated patients may raise doubts, due to the risk of hemorrhagic complications or the occurrence of thromboembolic events. This work aims to direct, directly, the academic and professional of dentistry, before patients using Warfarin.

Uso de anticoagulantes orales directos en pacientes con fibrilación auricular post implante de TAVI: resultados de una encuesta internacional / Use of anticoagulants in patients with atrial fibrillation undergoing transcatheter aortic valve implantation

BACKGROUND: Transcatheter Aortic Valve Implantation (TAVI) is beneficial in patients with symptomatic severe Aortic Stenosis (AS). There is no consensus about the best anticoagulation strategy for patients with a recent TAVI and with atrial fibrillation (AF). Direct oral anticoagulants (DOACs) are effective to prevent embolic events with a significant lower incidence of bleeding. There is scarce evidence about the use of these drugs in patients undergoing TAVI. AIM: To assess the management of anticoagulation at the moment of discharge of patients with AF and TAVI. Material and Methods: A four question survey was sent to cardiologists involved in TAVI programs in different international centers. Results: The survey was answered by 72 interventional cardiologists. Even with the lack of randomized evidence, in most of the scenarios DOACs are prescribed at discharge in patients with indication for anticoagulation. Also, in patients with high bleeding risk, most cardiologists would perform a left atrial appendage closure. In patients with concomitant coronary artery disease, if a stent was recently implanted, prescription of the combination of a DOAC and one antiplatelet drug was the most common answer. In patients with a former coronary angioplasty, DOAC or Warfarin was the therapy of choice. CONCLUSIONS: In the absence of randomized data, interventional cardiologists prescribe DOACs at discharge to patients with AF and TAVI, without following current guidelines in most cases.

Notas técnicas para judicialização de anticoagulantes orais diretos: uma avaliação do perfil / Technical notes for judicialization of direct oral anticoagulants: a profile assessment

Fundamentos: A judicialização da saúde no Brasil gera aumento anual significativo das demandas por recursos financei-ros. Em 2016, com intuito de promover uma comunicação entre o sistema jurídico e o sistema de saúde, implementaram o sistema e-NatJus (Núcleos de Apoio Técnico do Poder Judiciário). A função do e-NatJus é fornecer apoio técnico aos juízes nas questões relativas à saúde por meio da elaboração de Notas Técnicas (NT). Objetivo: Analisar o perfil e a qualidade das NT de solicitação de anticoagulantes orais diretos (DOACs) disponíveis no portal eletrônico do e-NatJus para consultas por juízes. Métodos: Trata-se de um estudo documental descritivo, em que foram avaliadas as características sociodemo-gráficas, do diagnóstico e tratamento dos pacientes, bem como informações sobre as evidências da eficácia e segurança da tecnologia e conclusão de todas as NT referentes à solicitação de DOACs obtidas na plataforma e-NatJus desde sua im-plantação em 2018 até junho de 2020. Resultados: Foram incluídas no estudo 181 NT: rivaroxabana (67,0%), apixabana (16,0%), dabigatrana (12,0%) e edoxabana (5,0%). A média de idade dos indivíduos foi de 65,7 (±15,1) anos, sendo, (50,3%) do sexo feminino. São Sebastião do Paraíso foi o município que mais solicitou apoio nas NT (5,0%), e o estado com mais solicitações foi Santa Catarina (34,8%). Em relação ao diagnóstico dos pacientes, os mais prevalentes foram fibrilação atrial (FA)(31,5%) e troembolismo venoso (TEV)(16,4%). Aproximadamente 86 NT estavam com conteúdo semelhante no item evidência científica. Observou-se que (57,5%) tiveram a conclusão não favorável para disponibilizar o medicamento solicitado. Dentre as 77 NT que tiveram a conclusão favorável, (57,1%) não avaliaram as recomendações da Comissão Na-cional de Incorporação de Tecnologias (CONITEC). Conclusão: De forma geral, nosso estudo permitiu conhecer o perfil das NT e os principais motivos de solicitações dos DOACs, com intuito de compreender melhor se são realizadas realmente de forma consciente e responsável. A população que solicitou os DOACs via judicial é uma população idosa e não houve grande diferença entre os sexos. Os diagnósticos mais prevalentes nas NT foram FA e TEV corroborando com a indicação desses medicamentos. Pode-se observar que a maioria das NT que concedeu parecer favorável não evidenciou consulta à CONITEC e não apresentou evidência científica que contemplava de forma concreta sua decisão (AU)

Background: The judicialization of health in Brazil generates an annual increase in demands for financial resources. In 2016, to promote communication between the legal system and the health system, the implementation of e-NatJus system (Technical Support Centers of the Judiciary). The role of e-NatJus is to provide technical support to judges on health-related issues through the preparation of Technical Notes (NT). Objective: Analyze the profile and quality of TNs requesting Direct Oral Anticoagulants (DOACs) available on the e-NatJus electronic portal for consultation by judges. Methods: This is a descriptive documentary study, which evaluated the sociodemographic characteristics, diagnosis, and treatment of patients, as well as information on the evidence of the efficacy and safety of technology and the conclusion of all NT related to the request for DOACs obtained in the e-NatJus platform since its implementation in 2018 to June 24, 2020. Results: The study included 181 NT: rivaroxaban (67,0%), apixaban (16,0%), dabigatran (12,0%), and edoxaban (5,0%). The mean age of the individuals was 65.7 (±15.1) years, being (50,3%) female. São Sebastião do Paraíso was the municipality that most requested support in the NT (5,0%), and the state with the most requests was Santa Catarina (34,8%). Regarding the diagnosis, the most prevalent patients were AF (31,5%) and VTE (16,4%). Approximately 86 NT had similar content in the scientific evidence item. It was observed that (57,5%) had an unfavorable conclusion about making the requested drug available. Among the 77 NT that had a favorable conclusion, (57,1%) did not evaluate the rec-ommendations of the National Commission for the Incorporation of Technologies (CONITEC). Conclusion: In general, our study is effective to know the profile of the NT and the main reasons for consulting DOACs, to better understand the form of knowledge and the DOACs. It can be observed that most NTs granted a favorable opinion, did not evidence CONITEC and did not present scientific evidence that contemplated the concrete form of their decision (AU)

Predictors of Hospitalization in Vitamin K Antagonist Users Presenting with Bleeding at the Emergency Department

Abstract Background Vitamin K antagonists (VKA) are indicated for the prevention of thromboembolic events and reduction of mortality in patients with atrial fibrillation and patients with valvular prostheses. However, their use is associated with bleeding complications and hospitalizations. Predictors of hospital admission for bleeding in these patients are poorly known. Objectives To define the predictors for hospitalization of VKA users who seek emergency care due to bleeding. Methods Single-center, cross-sectional study, with retrospective analysis of electronic medical records from 03/01/2012 to 02/27/2017. Clinical and laboratory variables were compared between patients who were hospitalized and those who were not. A logistic regression model as used, in which the variables were included using the Backward stepwise method, with a p value of 0.05 as the input criterion, a removal value of 0.20 and a confidence interval of 95%. The p-value was considered statistically significant when <0.05. Results A total of 510 patients with bleeding were included, of whom 158 were hospitalized. Predictors of hospitalization were: INR at supratherapeutic levels (OR 3.45; P <0.01; 95% CI 1.58 - 7.51), gastrointestinal bleeding (OR 2.36; P <0.01; CI 95% 1.24 - 4.50), drop in hemoglobin (OR 6.93; P <0.01; 95% CI 3.67 - 13.07), heart failure (OR 1.96; P 0.01; 95% CI 1.16 - 3.30) and need for blood transfusion (OR 8.03; P <0.01; 95% CI 2.98 - 21.64). Conclusion Drop in hemoglobin, heart failure, INR at supratherapeutic levels, gastrointestinal bleeding and need for blood transfusion were associated with hospitalization. Identification of these factors in the initial evaluation would help to define which patients will demand more intensive care.

Use of a mobile application for the control of anticoagulation with warfarin: a cluster randomized controlled clinical trial - Ijui/RS/Brazil

Abstract To evaluate the effectiveness of an anticoagulation protocol adapted in a mobile application (appG) for patients using warfarin. This was a cluster randomized controlled clinical trial carried out in basic health centers of Ijui, RS, Brazil, between April and October 2017. The appG was installed on the cell phones of all physicians belonging to the intervention group. Primary outcomes were bleeding and thrombosis, and secondary outcomes were changes in the dose of warfarin, use of new drugs, drug interactions, search for health services, and remaining on the target international normalized ratio. Thirty-three patients belonging to 11 basic health centers were included in this study. From these, 15 patients were in the intervention group which used the appG, and 18 were in the control group. After 6 months, patients in the appG group had fewer bleeding events (7% versus 50%, p-value=0.028) and a lower weekly dose of warfarin (29.3 ± 9.7 mg versus 41.7 ± 12.5 mg, p-value=0.030) when compared to the control group. The anticoagulation protocol adapted in a mobile app reduced bleeding in patients using warfarin.

Riesgo de sangrado en pacientes anticoagulados con antagonistas de la vitamina K que reciben antibióticos / Risk of bleeding in anticoagulated patients with vitamin K antagonists who receive antibiotics

Lograr un adecuado nivel de anticoagulación con antagonistas orales de la vitamina K suele ser un desafío frecuente en la práctica clínica, dado que su estrecho rango terapéutico suele verse afectado por diversas interacciones farmacológicas,alimentos y condiciones clínicas. A partir de un caso de un paciente anticoagulado que presenta una hemorragia gastro-intestinal posterior a realizar un tratamiento antibiótico, la autora de este artículo revisó la evidencia sobre el riesgo desangrado secundario a la interacción entre este tipo de anticoagulantes y antibióticos orales. Su conclusión tras realizar una búsqueda bibliográfica y seleccionar la mejor evidencia disponible, es que existe un aumento del riesgo relativo desangrado en pacientes anticoagulados que reciben antibióticos, por lo que deberían evitarse aquellos antibióticos con conocido potencial de interacción. Si ello no fuera posible, se recomienda monitorizar el estado de anticoagulación con dosaje de la razón internacional normatizada (RIN) posterior a la introducción del antibiótico. (AU)

Achieving an adequate level of anticoagulation with oral vitamin K antagonists is often a frequent challenge in clinical practice, given that their narrow therapeutic range is often affected by various drug interactions, food, and clinical conditions. Based on a case of an anticoagulated patient who presented gastrointestinal bleeding after antibiotic treatment, the authorof this article reviewed the evidence on the risk of secondary bleeding due to the interaction between this type of anticoagulants and oral antibiotics. Their conclusion, after performing a literature search and selecting the best available evidence, is that there is an increased relative risk of bleeding in anticoagulated patients receiving antibiotics, so antibiotics with known potential for interaction should be avoided. If it weren't possible, it is recommended to monitor the anticoagulation status with International Normalized Ratio (INR) dosing after the introduction of the antibiotic. (AU)

Bleeding associated with self-medication in warfarin users: A prospective observational study in Ijuí (Brazil)

Abstract Warfarin has been associated with bleeding and venous thromboembolism. Objective: This study aimed to estimate the association between bleeding and concomitant self-medication, and the incidence of adverse drug reactions in patients using warfarin. Setting: the public health network of Ijuí, a municipality in southern Brazil. This was an open prospective cohort, conducted for a period of 18 months with users of warfarin, treated at the public health service. The association between bleeding and self-medication was evaluated by means of the Cox Model with left truncation, using the time variable. Main outcome measurement: bleeding reported in the follow-up. Cases of thromboembolism and death were also registered. All patients treated with warfarin in the public health system of the municipality (98) were identified. Sixty-eight were interviewed and followed up, of whom 63 completed follow-up and five died during the study. Bleeding rates of 37.7 /100 patients/year, thromboembolism of 4.8/100 patients / year and deaths of 4.8 /100 patients / year were observed. The results showed that patients, who take warfarin and self-medicated present a two-fold increased bleeding, compared with those who do not self-medicate. The bleeding risk associated with self-medication ranged from 2.001 to 2.685; those values maintained their significance even when adjusted for number of interactions, CYP polymorphism, TTR and age in COX analysis. These results greatly suggest the need for providing greater assistance to patients who take anticoagulant medications with the purpose of reducing self-medication and consequently, adverse reactions.

Tiempo en rango terapéutico en pacientes con fibrilación auricular anticoagulados con warfarina en el Instituto Nacional del Tórax / Time in therapeutic range in patients with atrial fibrillation anticoagulated with warfarin at the Instituto Nacional de Torax

INTRODUCCIÓN: la fibrilación auricular es la arritmia más frecuente, siendo una patología trombogénica, por lo que en la mayoría de los casos es necesaria la anticoagulación. Uno de los agentes más usados es la warfarina y su efecto se determina mediante el INR y el tiempo que el paciente se mantiene en rango terapéutico, denominado Tiempo en Rango Terapéutico. OBJETIVO: determinar el Tiempo en Rango Terapéutico en pacientes con Fibrilación Auricular que acuden a consulta externa de cardiología en el Instituto Nacional del Tórax MATERIALES Y MÉTODOS: se hizo la revisión de expedientes clínicos de pacientes que acudieron a consulta externa de cardiología con fibrilación auricular de 2017 a 2019 y se calculó el TTR mediante el método de Rosendaal y porcentaje de INRs en rango terapéutico RESULTADOS: de 212 pacientes dentro del universo se incluyeron en el estudio 49 pacientes. La edad promedio fue de 67,49 ±12,33 años, con un 63,3% de pacientes de sexo femenino. El TTR calculado por método de Rosendaal fue de 34±25,98% y el TTR calculado por porcentaje de INRs en rango fue de 31,31±24,01%. El porcentaje de pacientes con TTR adecuado (≥70%) fue del 10,2%. CONCLUSIÓN: los pacientes con fibrilación auricular anticoagulados con warfarina que acuden a consulta externa de cardiología del Instituto Nacional del Tórax presentan un nivel inadecuado de Tiempo en rango terapéutico. (AU)

INTRODUCTION: atrial fibrillation is the most frequent arrhythmia, being a thrombogenic pathology, so anticoagulation is necessary in most cases. One of the most used agents is warfarin and its effect is determined by the INR and the time that the patient remains in the therapeutic range, called Time in Therapeutic Range OBJECTIVE: to determine the Time in Therapeutic Range in patients with Atrial Fibrillation who attend outpatient cardiology consultation at the Instituto Nacional del Tórax MATERIALS AND METHODS: the clinical records of patients who attended the outpatient cardiology consultation with atrial fibrillation from 2017 to 2019 were reviewed and the TTR was calculated using the Rosendaal method and percentage of INRs in the therapeutic range RESULTS: of 212 patients within the universe, 49 patients were included in the study. The average age was 67.49 ± 12.33 years, with 63.3% of female patients. The TTR calculated by the Rosendaal method was 34 ± 25.98% and the TTR calculated by percentage of INRs in range was 31.31 ± 24.01%. The percentage of patients with adequate TTR (≥70%) was 10.2%. CONCLUSION: patients with atrial fibrillation anticoagulated with warfarin who attend the outpatient clinic of cardiology of the Instituto Nacional del Tórax present an inadequate level of Time in therapeutic range.(AU)

Características de pacientes atendidos en dos clínicas de anticoagulación de Colombia / Characteristics of patients in two anticoagulation clinics in Colombia

Resumen Objetivo: Establecer las características demográficas, clínicas y terapéuticas de los pacientes anticoagulados atendidos en las clínicas de anticoagulación del Hospital Universitario Fundación Santa Fe de Bogotá (HUFSFB) y del Hospital Universitario San Vicente Fundación Medellín (HUSVF), en los años 2015 y 2016. Método: Se realizó un estudio descriptivo, retrospectivo y transversal. La población de referencia la conformaron los pacientes atendidos en las clínicas de anticoagulación del HUSVF y el HUFSFB en el periodo comprendido entre marzo de 2015 y marzo de 2016. La información se tomó de los registros clínicos de ambos hospitales y para el análisis se utilizó estadística descriptiva. Resultados: Se evaluaron 502 pacientes en las dos clínicas de anticoagulación, con una edad promedio de 64 años en el HUFSFB y de 61 años en el HUSVF. La principal indicación de anticoagulación fue fibrilación o flutter auricular en el HUSVF (46.5%) y enfermedad tromboembólica venosa en el HUFSFB (69.7%). El 100% de los pacientes del HUSVF fueron anticoagulados con warfarina, frente a solo el 23% de los del HUFSFB; el tiempo en rango terapéutico fue del 69% en el HUFSFB y del 55% en el HSVF. Se presentó retrombosis en tres pacientes en cada una de las instituciones, y los eventos de sangrado fueron 7 (3,8%) en el HUFSFB y 30 (9,3%) en el HUSVF. Conclusiones: Las diferencias administrativas entre las dos instituciones se ven reflejadas en los resultados obtenidos. Existe, ligada al sistema de salud de nuestro país, una gran diferencia en la población, las enfermedades y el acceso a los servicios y a los medicamentos.

Abstract Objective: To establish the demographic, clinical and therapeutic characteristics of the anticoagulated patients treated at the anticoagulation clinics of Fundación Santa Fe de Bogotá (HUSVF) and Hospital Universitario San Vicente Fundación Medellin (HUFSFB), between 2015 and 2016. Method: A transversal retrospective descriptive study was carried out. The reference population consist in patients treated in the anticoagulation clinics of the HUSVF in Medellin and the HUFSFB in Bogotá between March 2015 to 2016. The information was taken from the clinical records of both hospitals and descriptive statistics were used for the data analysis. Results: A total of 502 patients were evaluated in both anticoagulation clinics. Patients' average age in HUFSFB was 64 years while in HUSVF was 61; the main pathology that required anticoagulation was the fibrillation/auricular flutter in HUSVF (46,5%) and venous thromboembolic disease in HUFSFB (69.7%). 100% of HUSVF patients are anticoagulated using warfarin and only 23% of those in HUFSFB; the time in therapeutic range (TTR) was 69% in HUFSFB and 55% in HSVF. Re-thrombosis was presented in 3 patients in each of the institutions and the bleeding events were 7 (3.8%) in HUFSFB and 30 (9.3%) in HUSVF. Conclusions: The administrative differences between the two institutions are reflected in the results obtained; there is a great difference in the population, pathologies, access to services and medicines, linked to the health system of our country.