Anestesia regional en la paciente embarazada antiagregada o anticoagulada / Regional anesthesia in the antiplatelet or anticoagulated pregnant patient / Anestesia regional em paciente grávida antiplaquetária ou anticoagulada

Resumen: La anestesia regional es la técnica de elección debida a la menor morbimortalidad. Una de las complicaciones más temidas es el hematoma espinal, teniendo las pacientes que reciben antiagregantes y/o anticoagulantes mayor riesgo de desarrollarlo. El cuadro clínico es variable, y no siempre están todos los elementos presentes (dolor lumbar, déficit motor y/o sensitivo y/o vesical). El diagnóstico se realiza por resonancia nuclear magnética y el tratamiento es la descompresión por laminectomía. Estando el pronóstico neurológico vinculado al tiempo en que se realiza ésta. Se realiza una revisión sobre los distintos fármacos antiagregantes y anticoagulantes utilizados en el embarazo - puerperio y las recomendaciones necesarias para las pacientes que recibirán una anestesia regional.

Abstract: Regional anesthesia is the technique of choice due to lower morbidity and mortality. One of the most feared complications is spinal hematoma, with patients receiving antiplatelet and / or anticoagulants having a greater risk of developing it. The clinical picture is variable, and not all the elements are always present (lumbar pain, motor and / or sensory and / or bladder deficits). Diagnosis is made by magnetic resonance imaging and treatment is laminectomy decompression. Being the neurological prognosis linked to the time in which it is performed. A review is made of the different antiplatelet and anticoagulant drugs used in pregnancy - puerperium and the necessary recommendations for patients who will receive regional anesthesia.

Resumo: A anestesia regional é a técnica de escolha devido à menor morbimortalidade. Uma das complicações mais temidas é o hematoma espinhal, com pacientes em uso de antiagregantes plaquetários e / ou anticoagulantes com maior risco de desenvolvê-lo. O quadro clínico é variável e nem sempre os elementos estão presentes (dor lombar, déficits motores e / ou sensoriais e / ou vesicais). O diagnóstico é feito por ressonância magnética e o tratamento é a descompressão por laminectomia. Sendo o prognóstico neurológico ligado ao tempo em que é realizado. É feita uma revisão das diferentes drogas antiplaquetárias e anticoagulantes utilizadas na gravidez - puerpério e as recomendações necessárias para as pacientes que receberão anestesia regional.

Anticoagulación en enfermedad tromboembólica venosa / Anticoagulant therapy in venous thromboembolic disease

INTRODUCCIÓN: La enfermedad tromboembólica venosa está comprendida por la trombosis venosa profunda y el tromboembolismo pulmonar, las cuales son enfermedades comunes con alta morbilidad y mortalidad, incluso antes del diagnóstico. El tratamiento está basado principalmente en la terapia anticoagulante, con diferentes opciones dependiendo del ámbito clínico y la estabilidad del paciente (terapia oral vs parenteral). Objetivo: Revisar las diferentes opciones y escenarios clínicos para la indicación de terapia anticoagulante, basados en la evidencia médica actual. Metodología: Se realizó una búsqueda sistemática en las bases de datos PubMed, Scopus, Google Académico y Scielo sobre estudios que evaluaran la indicación de la terapia anticoagulante en pacientes con diagnóstico de enfermedad tromboembólica venosa, principalmente, estudios aleatorizados controlados y metaanálisis. Discusión y Resultados: Fueron encontrados estudios aleatorizados controlados donde se evidencian menores tasas de sangrado y recurrencia de la enfermedad tromboembólica venosa a favor de los anticoagulantes directos, excluyendo algunas situaciones especiales como cáncer y enfermedad renal crónica avanzada. Conclusión: La terapia anticoagulante es el pilar del tratamiento en la enfermedad tromboembólica, disminuyendo la morbilidad y mortalidad de esta entidad, aunque aumenta el riesgo de sangrado. Anteriormente, los anticoagulantes antagonistas de la vitamina K eran la única opción terapéutica, pero con altas tasas de sangrado, afortunadamente desde hace algunos años contamos con los anticoagulantes directos con mejores perfiles de seguridad y menor tasa de sangrado.

ABSTRACTS: Venous thromboembolic disease includes deep venous thrombosis and pulmonary embolism, which are common diseases with high morbidity and mortality. The treatment is based mainly on anticoagulant therapy, with different options depending on clinic context and patient stability (oral vs parenteral therapy). Objective: To review evidence based medical information regarding the use of anticoagulant therapy in venous thromboembolism. Methods: We performed a systematic review of PubMed, Scopus, Google scholar and Scielo databases, of randomized controlled studies and meta-analysis evaluating anticoagulant therapy in patients with thromboembolic venous disease. Results: Except for tromboembolic disease in patients with cancer or chronic kidney disease anticoagulation with direct (new) oral agents led to less bleeding episodes and lower relapse rate. Conclusion: anticoagulant therapy is the basis of treatment for thromboembolic disease, decreasing morbidity and mortality. New oral anticoagulants' are associated to better clinical results, notwithstanding a slight increase in bleeding episodes.

Prácticas culturales de las personas pertenecientes a un programa domiciliario de anticoagulación durante la terapia con antagonistas de vitamina K / Cultural practices of people belonging to a home anticoagulation program during therapy with vitamin K antagonists

La terapia anticoagulante es un tratamiento utilizado clínicamente desde la década de los años 50. Actualmente y a pesar de la aparición de nuevos fármacos la warfarina sigue siendo el medicamento más utilizado. La necesidad de monitoreo frecuente, además de la interacción con fármacos y alimentos, así como la necesidad de transformar la cotidianidad de las personas que la consumen, modifican las prácticas culturales de estos pacientes, pudiendo afectar aspectos tales como la adherencia. Objetivo general: Describir las prácticas culturales transformadas por las personas pertenecientes a un programa de anticoagulación en terapia con warfarina. Metodología: Estudio cualitativo tipo micro etnografía, realizado en Bogotá, Colombia. Resultados: Se contó con la participación de 10 informantes quienes asociado al uso de warfarina transformaron prácticas culturales entorno al conocimiento, la cotidianidad y las emociones.

Anticoagulant therapy is a treatment used clinically since the 1950s. Currently, despite the appearance of new drugs, warfarin remains the most widely used one. The need for frequent monitoring, in addition to the interaction with drugs and foods, as well as the need to transform the everyday life of people who consume it, modify the cultural practices of these patients, and may affect aspects such as adherence. General objective: Describe the cultural practices transformed by people who are part of an anticoagulation program in warfarin therapy. Methodology: Qualitative study type micro ethnography, carried out in Bogotá, Colombia. Results: We had the participation of 10 informants who, associated with the use of warfarin, transformed cultural practices around knowledge, everyday life and emotions.

Uso de warfarina y bajo rango de INR en la prevención de trombosis venosa recurrente / Use of warfarin and low range INR in the prevention of recurrent venous thrombosis

El objetivo de este trabajo fue determinar la efectividad de un rango de la Razón Normalizada Internacional (INR) entre 1,5 y 1,9 en la prevención de la recurrencia de trombosis venosa y de las complicaciones hemorrágicas asociadas al uso de warfarina. Entre enero del 2006 y noviembre del 2009, se estudiaron 39 pacientes, con edades entre 10 y 78 años y diagnóstico de trombosis venosa profunda y/o embolismo pulmonar que recibieron warfarina al menos durante 6 meses. Los sujetos fueron separados aleatoriamente en dos grupos: a 20 pacientes se le ajustó la dosis para mantener el INR entre 1,5 y 1,9 y a 19 pacientes se les mantuvo el INR entre 2 y 3. A cada individuo se le cuantificó la actividad plasmática de los factores II, VII, IX y X a la primera y entre la cuarta y quinta semanas, luego de estabilizado el INR. En ambos grupos, la actividad de los factores se encontró por debajo del valor normal con diferencia significativa entre los grupos (p<0,05). No se detectó recurrencia de trombosis durante el seguimiento. Solo se presentaron manifestaciones hemorrágicas menores en un sujeto con INR entre 1,5 y 1,9 y en cuatro del otro grupo (p = NS). Los resultados del presente trabajo sugieren que un rango de INR entre 1,5 y 1,9, provee un esquema de anticoagulación eficaz para la prevención de recurrencia de trombosis venosa con menor frecuencia de hemorragias. Sin embargo, es necesario seguir incorporando más individuos en el estudio para obtener mayor certeza en el análisis de estos resultados.

The object of this work was to determine the efficacy of a low range International Normalized Ratio (INR) between 1.5 and 1.9, in preventing recurrent venous thrombosis and the hemorrhagic manifestations that can complicate anticoagulation with warfarin. Thirty nine patients, 10 to 78 years of age were studied between January 2006 and November 2009. All of them had been treated with warfarin, for at least 6 months, due to deep venous thrombosis or pulmonary embolism. The subjects were separated, at random, into two groups. In group A (20 patients), the doses of warfarin were adjusted until the INR was stabilized between 1.5 and 1.9; in group B, the INR was maintained between 2 and 3. The coagulant activities of plasma factors II, VII, IX and X were determined in a week and between the fourth and fifth weeks, after stabilization of the INR. Plasma activities of the coagulation factors assayed were abnormally low in both groups, in the two opportunities they were determined, although significantly lower in group B (p<0.05). No thromboembolic episodes occurred during the study, in any of the patients. One of the patients from group A and four from group B, presented minor hemorrhagic manifestations (p N.S.) The above results suggest that a range on INR lower that 2, could be sufficient to prevent recurrent thrombotic episodes while diminishing the frequency of hemorrhagic complications associated with the use of warfarin. However, it is necessary to continue incorporating more individuals in the study to obtain greater certainty in the analysis of these results.

New perspectives and recommendations for anticoagulant therapy post orthopedic surgery

Anticoagulant therapy is essential for the prevention of risks associated with the formation of thrombus in patients after surgery, especially in orthopedics. Recently, new oral anticoagulants were introduced in the therapeutic arsenal. This fact is important, because the current drug of choice in clinical practice is enoxaparin, a low molecular weight heparin. As all injecting drugs, enoxaparin may reduce patients' adherence to treatment by dissatisfaction with and resistance to the administration. This article reviews the available literature on the overall utility of these innovative medicines, approaching the pharmacology, the compared efficacy in relation to current agents, and the potential targets for new agents, as well as points to new trends in research and development. The article also contributes with a practical guide for use and recommendations to health professionals, especially focusing on the reversibility of hemorrhagic events, and discusses the importance of convenience/satisfaction of use, the cost of treatment, and the risk-benefit profile for patients.

A terapia anticoagulante é fundamental para a prevenção de riscos associados à formação de trombos em pacientes pós-cirúrgicos, principalmente em ortopedia. Recentemente, novos anticoagulantes orais foram introduzidos no arsenal terapêutico. Tal fato é importantíssimo, visto que o atual medicamento de primeira escolha na prática clínica é a enoxaparina, uma heparina de baixo peso molecular. Por ser de uso injetável, a enoxaparina pode diminuir a adesão do paciente ao tratamento, devido à insatisfação e à resistência quanto à via de administração. Este artigo revisa a literatura disponível sobre a utilidade total desses medicamentos inovadores ao abordar a farmacologia, a eficácia em comparação com os agentes atuais e os alvos potenciais para novos agentes, bem como aponta as novas tendências em pesquisa e desenvolvimento. O artigo também contribui com um guia prático de uso e recomendações aos profissionais de saúde, com um enfoque especial sobre a reversibilidade de eventos hemorrágicos e, finalmente, discute a importância da conveniência/satisfação de uso, o custo de tratamento e o perfil risco-benefício para o paciente.

Hematoma intramural espontáneo de Intestino Delgado debido al uso de anticoagulantes orales: reporte de caso y revisión de la literatura / Spontaneous intramural hematoma of the small bowel due to use of oral antocoagulants: case report and review of the literature

A continuación describimos un caso de una mujer de 78 años anticoagulada que presentó dolor abdominal, náuseas, vómitos y niveles elevados de tiempo de protrombina (INR= 9.07). La ecografía y tomografía abdominal mostraron un engrosamiento de las paredes del intestino delgado dependiente de duodeno y yeyuno. La endoscopía mostró un aspecto equimótico del duodeno y yeyuno. La paciente recibió tratamiento médico conservador logrando que sus síntomas remitan espontáneamente.

We describe a case of 78 year-old woman under anticoagulant therapy who presented abdominal pain, nauseas, vomiting and an elevated prothrombin time levels (INR = 9.03). The ultrasound and abdominal CT showed a thickened small bowel wall mainly involving duodenum and jejunum. The endoscopy showed an ecchymotic aspect of duodenum and jejunum. The patient received conservative medical treatment and her symptoms spontaneously subsided.

Cirurgias odontológicas em usuários de anticoagulantes orais / Dental surgery in patients on oral anticoagulation therapy

Em razão do crescimento do número de indivíduos submetidos à terapêutica anticoagulante também nos consultórios odontológicos, realizamos um levantamento retrospectivo de prontuários de pacientes anticoagulados com derivados cumarínicos e uma revisão sobre os protocolos de atendimento, a fim de procurar estabelecer diretrizes para um tratamento cirúrgico-odontológico adequado e seguro. A avaliação do paciente com relação ao seu nível de anticoagulação através do Índice Normatizado Internacional (INR) ou Tempo de Protrombina (TP) e a classificação da amplitude do trauma cirúrgico são fatores importantes a serem avaliados antes do procedimento cirúrgico. Nosso levantamento mostrou que, em 47 cirurgias, sem alteração da medicação sistêmica, apenas um caso apresentou hemorragia pós-operatória, controlada por manobras de hemostasia local. Desse modo, observamos que, dentre os vários protocolos propostos na literatura, a manutenção da terapia anticoagulante, com a utilização de hemostáticos locais se necessário, parece o mais adequado à maioria dos casos cirúrgicos ambulatoriais.

In the daily medical practice there has been an increase in the use of anticoagulant drugs; as a consequence, dental offices are receiving more individuals under this therapy. Nowadays dental surgeons need a broader knowledge of hemostasis and associated therapies in order to offer the best possible assistance. This article presents a retrospective study based on the clinical records of anticoagulated patients using dicoumarin who underwent dental surgical procedures. Twenty-six patients were submitted to forty-seven minor dental surgical procedures without any change to their doses of anticoagulants. Laboratorial evaluations of PT (pro-thrombin time) based on the INR (International Normalized Ratio) were performed for all patients. The results showed that only one patient reported postoperative bleeding which was controlled by local compression. Based on the results of this study and a brief review of publications, the authors suggest that the most adequate conduct for most patients is to maintain anticoagulation therapy and the complementary use of local hemostasis when necessary.